Honest Housing Finance: What Replaces the 30-Year Mortgage Under a Sound Monetary Regime
The first two essays of this trilogy established the diagnosis. The American single-family home scores at the bottom of Menger's saleability spectrum. The 30-year mortgage that finances it is a 90-year-old policy construction whose continued operation depends on a $9 trillion substitute layer of agency mortgage-backed securities, themselves dependent on continuous central-bank intervention. The half-century of housing-price appreciation that defines the cultural memory of American homeownership was the product of a specific monetary regime — closed gold window, sustained Cantillon-effect inflation, a 16-percentage-point rate decline from 1981 to 2021 — that cannot be replicated. The boomer trade is a one-time event. The substitute structures that supported it are now compressing under the dual pressures of inflation-induced rate normalization and the demographic exhaustion of the buyer cohort.
A diagnosis without a constructive answer is not analysis. It is complaint. This essay attempts the constructive answer.
The question I want to take seriously is: if the post-1971 architecture is exhausted, what replaces it? The answer cannot be a return to pre-1934 conditions; the demographic, financial, and political-economy environment of 2026 is too different from 1933 for any direct revival of the pre-FHA mortgage market to be useful as a model. The answer also cannot be a maximalist gold-standard restoration; whatever the merits of that case, it is not a near-term policy reality, and any housing finance architecture that depends on it is academic rather than practical.
The answer the framework actually points toward is more modest and more achievable. There are historical models of housing finance that operated successfully without the 30-year mortgage architecture, in monetary regimes considerably more disciplined than the current one. There are modern primitives — clearing instruments emerging from the compute economy, decentralized cryptographic settlement, equity-share contracts — that didn't exist when the historical models matured. And there are Austrian design principles, drawn directly from Menger and Fekete, that can guide the synthesis. Combining the three gives a credible sketch of what honest housing finance might look like in a post-substitute-layer world.
The proposal in this essay is not a complete blueprint. It is a set of design principles and concrete instrument types that demonstrate what the New Austrian framework actually advocates for housing finance — beyond the narrow critique of what currently exists. The goal is to show that "sound money for housing" is not a slogan but a design exercise with specific structural commitments.
Five design principles drawn from the framework
Before sketching specific instruments, the framework imposes five design constraints that any honest housing finance architecture must satisfy. Each is drawn directly from Menger or Fekete; together they define the design space.
Principle 1: Redemption discipline must be real. Fekete's most consistent demand was that paper substitutes for monetary or near-monetary goods must remain tethered to their underlyings through real redemption mechanics, not through institutional commitments alone. Applied to housing finance, this means that any paper claim issued against a household's mortgage must be redeemable through mechanisms that do not depend on permanent central-bank backstopping. The current agency MBS architecture fails this test. An honest replacement must allow paper claims to fail when the underlying conditions warrant — and the system must be designed so that such failures are localized rather than systemic.
Principle 2: The maturity structure must match the economic reality of the underlying. Fekete's real-bills framework demanded that clearing instruments mature on the natural timescale of the productive economic activity they finance. A 91-day bill matched the time required for goods to move from producer to consumer. A 30-year mortgage matches no natural economic timescale. Households do not have 30-year planning horizons; they have 5–15 year planning horizons, and most refinance or move within that window anyway. Honest housing finance should issue debt on natural household timescales, with explicit refinancing mechanics rather than implicit assumptions about future rate environments.
Principle 3: Risk and reward must align between counterparties. The current architecture transfers default risk almost entirely to the federal government (via FHA insurance and agency credit enhancement) while leaving upside appreciation entirely with the household. This asymmetry is the source of much of the system's distortive behavior. Honest housing finance requires that whoever bears the downside risk also share in the upside return. This points directly at equity-share instruments, which have been quietly maturing in the private market since the 2010s and which the framework treats as structurally superior to debt-only financing for an asset like housing.
Principle 4: The state's role must be transparent rather than concealed. The current architecture has an enormous state presence — FHA, Fannie, Freddie, Ginnie, the Fed's MBS holdings, GSE conservatorship, the implicit federal guarantee — but the presence is structurally concealed inside private-market instruments. Households who buy 30-year mortgages do not understand that they are participating in a fundamentally state-supported market. Honest housing finance either substantially reduces the state's role or makes it explicit. Sweden's state-issued housing bonds, used to finance public housing during the 1950s–1990s, are an example of explicit state finance. The current American system is hybrid in the worst way: pervasively state-supported but marketed as private-market.
Principle 5: Geographic and physical constraints must be priced honestly. Housing's worst Mengerian saleability characteristic is its non-transportability — the home is fixed in space, and its value is hostage to the economic fate of one specific location. The current mortgage architecture systematically under-prices this risk through nationally-uniform underwriting standards that treat a $400,000 home in Cleveland and a $400,000 home in Phoenix as actuarially equivalent. They are not. Honest housing finance must price geographic risk at the loan level, not paper over it with national pools and federal credit enhancement.
These five principles do not prescribe a single architecture. They define the design space within which multiple specific architectures could work. The instruments below are concrete attempts to satisfy the principles.
The historical models worth studying
Before proposing new instruments, it is worth noting that two existing models operate today, in major economies, with structural features the framework finds attractive.
The British building society model dates to 1775 and produced substantial homeownership in the United Kingdom for 150 years before any FHA-equivalent existed. Building societies were mutual organizations: members deposited savings into a collective pool, and members borrowed from the same pool to purchase homes. The borrower-as-saver and saver-as-borrower structure aligned interests. Loans were typically 5–15 year terms, not 30. Default rates were low because the local-membership structure created social-enforcement incentives that abstracted national mortgage pools cannot replicate. The model declined in the late 20th century as building societies converted to commercial banks during the 1980s–1990s deregulation wave, but the cooperative/mutual model demonstrably worked at scale for a long time.
The German Bausparkasse model, formalized in the 1920s and continuously operated since, is a contractual-savings system in which the household saves at a fixed schedule for a defined period (typically 7–10 years), accumulating roughly 40–50% of the eventual home purchase price. At the end of the savings phase, the household receives a low-fixed-rate loan from the same institution for the remaining 50–60% of the purchase price, typically on a 10–15 year term. The savings rate and loan rate are set in advance, in the contract, and the institution manages its book by matching saver inflows to borrower outflows. The system produces high homeownership rates in Germany without an FHA-equivalent or an agency MBS market. The Bausparkasse is the closest existing institutional model to what the New Austrian framework would design from scratch.
The Swiss mortgage market operates on shorter-duration mortgage paper (typically 5–10 years), continuously rolled, with substantially higher down-payment requirements (33%+) than the American system, and with explicit recourse against the borrower's other assets in default. The result is a system in which homeownership rates are actually lower than in many countries (Switzerland's 42% homeownership rate is among the lowest in the OECD), but in which housing markets are far more stable across cycles, and in which households who do own homes have substantially less financial fragility than American homeowners. The Swiss model demonstrates that housing finance can be conducted on honest terms even within a still-fiat monetary regime, at the cost of lower headline homeownership rates.
None of these models is perfect. None is directly transplantable to the American context. But each demonstrates that the 30-year fixed-rate fully-amortizing mortgage with national pooling and federal credit enhancement is not the only way to finance household housing. It is one specific historical configuration whose structural problems have become increasingly visible. Better configurations exist and have been demonstrated.
Instrument 1: the household contractual savings instrument
The first instrument of the proposed architecture is a direct adaptation of the Bausparkasse model, with modern digital primitives layered in.
A household enters a contractual savings agreement at the start of its housing accumulation phase — typically in the late 20s or early 30s. The household commits to a defined monthly savings contribution, denominated in a stable unit of account (the dollar, until something better is available). The savings accumulate in a pooled fund managed by a non-profit or mutual organization, alongside the savings of other households at similar life stages. The fund earns interest at a rate set in the contract, paid in part from the loan interest the same fund will eventually charge the household when it transitions from saving to borrowing.
After a defined accumulation period — 7 years for a partial down payment, 10 years for a full one — the household is eligible to borrow from the same fund for home purchase. The loan rate is also set in the contract, also typically below the prevailing market rate (because the fund's cost of capital is its own savers, not external bondholders). The loan term is short — 10 to 15 years rather than 30 — because the household has already accumulated substantial equity through the savings phase.
The features that satisfy the framework's principles:
- Redemption is real. The fund's loans are funded by its own savers, not by external paper claims. There is no substitute layer between household and counterparty. Defaults reduce the fund's loan book; they do not transmit to a national MBS market.
- Maturity matches reality. The household's planning horizon and the loan duration align. A 10-year mortgage with explicit 5-year refinancing windows is closer to actual household behavior than a 30-year amortization that 90% of households break before maturity.
- The state's role is minimal and explicit. The fund is regulated as a financial institution but does not require federal credit enhancement. Households who participate understand they are participating in a private mutual structure, not a federally-backed system.
- Geographic risk is priced at the fund level. Funds organized regionally — at the metro or state level — bear the risk of their local market and price loans accordingly. National diversification is achievable through inter-fund relationships, but the underlying risk pricing is local.
The modern primitives that make this more interesting than the 1920s Bausparkasse: digital settlement (the savings phase can be operated with continuous, low-friction contributions through automated systems), smart-contract enforcement (the contractual terms can be enforced on-chain rather than through paper agreements), and tokenized savings claims (a household's accumulated savings can be partially liquid through a secondary market in claims, without breaking the underlying fund's structural integrity).
Instrument 2: the equity-share co-investment
The second instrument addresses the third design principle directly. Rather than debt with embedded inflation-bet characteristics, the household and a co-investor purchase the home together as equity partners.
A household buying a $400,000 home contributes $40,000 (10%). A co-investor — typically an institutional investor seeking real-asset exposure, but plausibly a family member, a private fund, or a regional housing investment vehicle — contributes a further $40,000 to $120,000 (10% to 30%). The remainder is financed conventionally, but at substantially reduced loan-to-value ratios that significantly de-risk the debt portion. The co-investor receives a proportional equity claim on the home. When the home is sold, the proceeds are split according to the equity shares.
Several private-market firms (Unison, Point, Hometap, Splitero, and others) have been operating equity-share contracts in the U.S. market since the mid-2010s. The volumes are still small relative to the conventional mortgage market — collectively perhaps $5–10 billion in originations annually — but the structure has been refined and demonstrably works. The framework treats this instrument category as one of the most promising near-term reforms because it does not require any monetary-regime change to operate, but it produces substantially better risk-alignment characteristics than debt-only financing.
The features that satisfy the framework's principles:
- Risk and reward are aligned. The co-investor shares in both downside and upside. If the home depreciates, both parties absorb the loss proportionally. If it appreciates, both parties capture gain proportionally. The asymmetric structure of debt-financed homeownership — household captures all upside, government absorbs downside through default insurance — is replaced with proportional sharing.
- The household's leverage is reduced. With co-investor capital, the conventional mortgage portion drops to 60–80% LTV, with corresponding reductions in default risk and the systemic exposures that flow from high-LTV lending.
- Redemption is real. The co-investor's claim is on the equity in a specific home, not on a paper substitute. There is no MBS-style intermediation layer to fail.
The current limitation of equity-share instruments is that they are taxed and regulated unfavorably relative to mortgage debt. The mortgage interest deduction subsidizes debt financing; equity-share contracts have no equivalent benefit. Reforming the tax code to treat equity-share contracts neutrally — or, more aggressively, to favor them over debt — would substantially expand the instrument category. This is a near-term policy intervention that the framework specifically endorses, because it does not require any monetary regime change to produce a meaningful improvement in housing finance integrity.
Instrument 3: the regional housing bond
The third instrument addresses the fourth and fifth design principles by creating a genuinely local, geographically-priced housing finance vehicle.
A regional housing finance authority — organized at the metro or state level, governed by a combination of local elected officials and private representatives — issues bonds to private investors specifically to fund mortgage origination within its region. The bonds carry no federal guarantee. Their interest rates and credit spreads reflect the underlying economic conditions of the region: its employment base, demographic trajectory, supply-elasticity, climate exposure, and other factors specific to local housing market conditions.
The authority uses bond proceeds to originate mortgages in its region, holding the loans on its own balance sheet rather than securitizing them into national pools. Loan terms are determined by the authority's analysis of local conditions, typically with shorter durations (10–15 years) than the current national standard. Default risk is borne by the bond investors directly, with the authority's underwriting standards calibrated to keep default rates within tolerances acceptable to its bond market.
The features that satisfy the framework's principles:
- Redemption is real and local. Bond investors bear the actual risk of the regional housing market. The implicit federal guarantee is removed. Regional underperformance produces regional bond losses, not national systemic effects.
- Geographic risk is priced honestly. A region with declining population, climate exposure, or employment instability pays a higher cost of capital. A region with growing population and stable economic fundamentals pays a lower cost. Households in different regions face mortgage rates that reflect their actual local conditions, rather than the nationally-averaged rate that the current system produces.
- The state's role is local and explicit. The regional authority is a public body, but its activities are bounded by its bond-market discipline. It cannot issue mortgages that its bond investors will not fund. The discipline is structural rather than political.
This instrument is a substantial departure from the current national housing finance system. It would not coexist easily with Fannie Mae and Freddie Mac in their current forms; if regional housing bonds operated at scale, the national agencies would need to be wound down or substantially restructured. The framework treats this as a feature rather than a bug. The agencies' current structure is precisely the one the framework identifies as most fragile. Replacing them with regional structures that bear actual market risk is the substantive reform the framework points toward.
The transition problem
Any honest constructive proposal must address the transition problem: how do we get from the current architecture to the proposed one without producing a housing-market collapse along the way?
The framework treats this as the most consequential practical question in any reform proposal. The current architecture, however structurally flawed, is the price-support mechanism for the largest asset class in American household balance sheets. Removing it abruptly would produce a housing-price decline of unprecedented magnitude and would impair the wealth position of nearly two-thirds of American households. No policy reform that ignores this constraint can be politically viable.
The transition path the framework points toward is a gradual layering, not a substitution. New origination flows progressively over time toward the new instruments — through tax incentives, regulatory accommodation, and institutional capacity-building — while the legacy 30-year/agency-MBS architecture is allowed to run off naturally as existing mortgages mature, refinance, or are replaced. Over a 20–30 year transition, the new architecture grows from marginal to dominant, while the legacy architecture shrinks from dominant to marginal.
The specific transition mechanisms:
Tax neutrality between debt and equity-share financing, implemented as a near-term reform. This shifts marginal new originations toward equity-share structures without disrupting existing mortgages.
Regulatory accommodation for contractual savings institutions, allowing Bausparkasse-style organizations to operate under U.S. financial regulation. Several attempts to introduce this model have been made and have failed for regulatory reasons; the framework treats this as a relatively small reform with potentially large structural consequences.
Phased reduction of agency credit enhancement, beginning with high-balance loans and progressively extending to median-priced loans over time. This allows market participants to adjust to a higher cost of capital gradually rather than abruptly.
Federal Reserve balance-sheet runoff in agency MBS, completed over a decade rather than maintained indefinitely. The framework recognizes that the Fed cannot exit MBS holdings rapidly without producing duration-crisis dynamics; a slow runoff combined with the gradual emergence of alternative architectures is the realistic path.
Regional housing bond authorities established in supportive state jurisdictions first, allowing the model to demonstrate viability before being rolled out nationally. States with strong municipal-bond traditions and stable fiscal conditions are the natural early adopters.
This transition path is gradual by design. It does not produce dramatic results in any single year. Cumulatively, across two or three decades, it produces a fundamentally different housing finance architecture — one that aligns with the framework's design principles — without requiring the disruption that an abrupt substitution would entail.
What the framework does not advocate
It is worth being explicit about what the New Austrian framework does not advocate, because the constructive proposal above is sometimes confused with positions the framework does not actually hold.
The framework does not advocate for a return to the pre-1934 mortgage market. The 3-to-5 year balloon mortgage was not a stable instrument; the Great Depression demonstrated this conclusively. The framework's critique of the post-1934 architecture is not nostalgic.
The framework does not advocate for the elimination of homeownership. Housing is a legitimate consumption good with real consumption utility. The framework critiques the financialization of housing as a wealth-storage instrument, not the household decision to own a place to live. A household that buys a home with eyes open about its actual properties is making a defensible decision; the framework's complaint is with the cultural and institutional architecture that obscures those properties.
The framework does not advocate for rapid restoration of a gold standard or any specific monetary regime. The constructive housing finance proposal above is designed to operate within the existing fiat regime. It would operate better under a more disciplined monetary regime, but it does not require one. This is deliberate. Constructive proposals that are conditional on monetary-regime change have effectively no near-term policy purchase.
The framework does not advocate for ending federal involvement in housing. Federal involvement in housing has produced real benefits, including substantially expanded homeownership across multiple generations. The framework's critique is that federal involvement has been concealed inside private-market instruments rather than made explicit, and that the concealment has produced systemic fragility. The constructive proposal makes federal involvement smaller and more transparent rather than zero.
The proposals in this essay are reformist rather than revolutionary. They aim at making housing finance more honest within the constraints of the current political economy, not at producing a libertarian utopia. The framework treats this as the appropriate stance because the framework's diagnostic value is in identifying structural risks; its constructive value is in proposing reforms that mitigate those risks within achievable institutional limits.
What sound housing finance produces
If the architecture sketched above were to displace the current system over a multi-decade transition, what would the resulting housing market look like?
Home prices would more closely track wage growth and underlying productive economic conditions. The Cantillon-effect inflation that drove much of post-1971 home-price appreciation would be substantially attenuated, because the credit-supply expansion mechanism would no longer be funneled through a federally-guaranteed national MBS architecture. Real home-price appreciation would approach the long-run productive growth rate of the economy, in the range of 1–2% annually rather than the 4%+ of the recent past.
Homeownership rates would likely decline modestly. The Swiss model demonstrates that a more disciplined housing finance system tends to produce lower homeownership rates than the American system, because the qualifying thresholds for borrowing are higher and the cultural expectation of universal homeownership is correspondingly weaker. A future U.S. homeownership rate of 60% (down from 65.4% in 2026) would be the realistic outcome.
Housing-related financial fragility would decline substantially. Without the substitute layer's vulnerability to duration crises, without the SVB-style mark-to-market exposure to mortgage portfolios, without the GSE conservatorship overhang, the financial system would be less exposed to housing-market dynamics. Banking crises with housing-market triggers — the modal financial crisis of the post-1971 era — would become structurally less likely.
The intergenerational wealth transfer mechanism would slow. Without continuous Cantillon-effect home-price appreciation, the asset-price-to-wage divergence that produced the boomer windfall would compress. Younger cohorts would pay less for housing relative to their earnings; older cohorts would capture less appreciation on their housing positions. The differential cohort-level outcomes would more closely reflect the actual productive contributions of each cohort rather than their differential proximity to a specific monetary regime change.
The psychological relationship between Americans and housing would change. The cultural treatment of the home as the central wealth-building asset of normal life — the foundation of the American Dream as currently understood — would weaken. Households would invest in liquid diversified portfolios for wealth accumulation, and would treat the home as a consumption good with optional ownership advantages, rather than as a leveraged macro position with consumption-utility benefits.
The last consequence is not a small one. The cultural narrative around housing is partially a reflection of the substitute layer that has supported it, and partially a driver of the political-economy conditions that have allowed the substitute layer to grow. As the architecture changes, the narrative changes. As the narrative changes, the political-economy support for further substitute-layer extensions weakens. The reinforcing dynamic that has sustained the post-1971 housing regime begins to attenuate.
The Mengerian closing
Menger argued that money emerges spontaneously, from the bottom up, through the individual decisions of countless traders to accept progressively more saleable goods in exchange for less saleable ones. He was emphatic that money is not a state institution by origin, even when states ratify or modify what has emerged. The same principle applies, with appropriate modifications, to the financial instruments that mediate household ownership of low-saleability physical assets.
The 30-year mortgage was not a Mengerian instrument. It did not emerge spontaneously. It was designed by federal policy in the 1930s to address a specific Depression-era political-economy problem. It worked, on its own terms, for a specific set of conditions. Those conditions are now exhausted. The framework predicts that what replaces it, if anything does, will be a plurality of instruments rather than a single dominant product — because the underlying economic realities of household housing finance vary across regions, life stages, and risk preferences in ways that no single instrument can serve well.
This pluralism is itself the Mengerian outcome. A bottom-up housing finance market would not converge on a single dominant product; it would offer households a menu of structurally different instruments suited to different circumstances, and households would select among them based on their specific situations. The contractual savings instrument, the equity-share co-investment, the regional housing bond, and the conventional mortgage in its honest form (shorter, fully-private, geographically-priced) would coexist as alternatives.
This is what honest housing finance looks like under the framework. It is not the elimination of the mortgage. It is the elimination of the artificially uniform, federally-supported, substitute-layer-dependent mortgage architecture, replaced by a plurality of instruments each of which carries honest pricing and honest risk allocation between counterparties.
The framework cannot predict whether this transition will happen in the next two decades, the next five decades, or not at all. The framework can predict that the current architecture is approaching the structural limits of its expansion phase, and that something will have to change — either because the substitute layer fails under stress and forces an emergency reform, or because political pressure from the post-2021 cohort eventually produces a constructive reform process. Both paths lead to similar destinations. The constructive path is preferable, for obvious reasons.
The work of designing the destination — of moving from diagnostic critique to constructive proposal — is what the New Austrian framework's housing trilogy attempts to begin. The proposals above are sketches, not blueprints. The serious work of converting them into operational financial instruments, regulatory frameworks, and institutional structures is the labor of a generation. But the framework provides the design discipline. The historical models provide proof-of-concept. The modern primitives — digital settlement, smart-contract enforcement, equity-share contracts, tokenized claims — provide implementation tools that the architects of the 1930s did not have. The combination is sufficient to begin the work.
Menger and Fekete gave us the diagnostic tools. The post-1971 housing experiment gave us the empirical evidence that the existing architecture is exhausted. The next several decades will produce, one way or another, the institutions that succeed it. The framework's contribution is to ensure that what succeeds it is built on honest foundations — instruments whose redemption is real, whose maturity matches reality, whose risk and reward are aligned, whose state involvement is transparent, and whose pricing reflects actual local conditions.
This is the constructive case for the New Austrian Economics applied to American housing. It is not a slogan. It is a design exercise with specific instruments, specific historical precedents, specific transition mechanisms, and specific predicted outcomes. The framework, at its best, is more than critique. It is the beginning of a serious answer to the question of what comes next.
This concludes the Housing Trilogy of the New Austrian Economics series. The trilogy has moved from structural critique (essay 8 on agency MBS as paper substitutes) through empirical observation (essay 9 on the boomer trade as one-time windfall) to constructive proposal (this essay). Future work in the series will return to the broader monetary and financial questions raised in the original six essays, with periodic application to specific policy questions as conditions warrant.