What Slowing Home Appreciation Means for Note Investors

From Double Digits to Single Digits: A Shift Worth Studying

Between 2020 and 2023, U.S. home prices posted double-digit annual appreciation in most markets. Bidding wars were routine. Appraisals struggled to keep pace with contract prices. For note investors, the rising tide was a silent partner -- properties that collateralized distressed loans were gaining value faster than anyone had underwritten, widening the gap between what a borrower owed and what the property was worth.

Then the forecasts shifted. In late 2023 and into 2024, two of the most prominent housing economists -- First American's chief economist and Moody's Analytics housing team -- published projections that the era of double-digit gains was over. They were not predicting a crash. They were forecasting continued positive appreciation, but in the low single digits. The days of 12 to 18 percent annual price increases were giving way to 3 to 5 percent.

That forecast proved largely accurate. And the transition from rapid appreciation to moderate appreciation -- while it barely made headlines compared to crash predictions -- has real consequences for anyone investing in mortgage notes. The equity cushion that rising markets hand you for free no longer grows at the same rate. Your underwriting has to carry more of the weight.

This post examines what appreciation slowdowns mean for note portfolios, why note investors are partially insulated from them, and how to stress-test your collateral assumptions so a flat or declining market does not catch you off guard.

Why Does Appreciation Rate Matter to Note Investors?

If you buy a performing note, the borrower's payments are your return. If you buy a non-performing loan, the property value is the floor under your investment. Every resolution strategy for a non-performing note -- modification, discounted payoff, deed in lieu, short sale, foreclosure -- ultimately depends on what the property is worth relative to what is owed.

That relationship is expressed as loan-to-value (LTV). A loan with a $60,000 unpaid principal balance on a property worth $100,000 has a 60% LTV. The borrower has $40,000 in equity. The lender (you, as the note holder) has a 40% cushion between the debt and the collateral value.

When homes appreciate at 15% per year, that cushion grows rapidly. A property worth $100,000 today is worth $115,000 next year and $132,000 the year after. The LTV shrinks even if the borrower never makes a payment. The note investor benefits from a rising market without lifting a finger.

When appreciation slows to 3%, the same property is worth $103,000 after a year and $106,000 after two. The cushion still grows, but at a pace that barely outrun carrying costs. And if appreciation goes flat or negative -- as it did in several markets during 2024 and 2025 corrections -- the cushion stops growing entirely. In a declining market, it shrinks.

This is the core issue. Appreciation rate determines how quickly your collateral coverage improves or deteriorates while you work through a resolution. In a fast-appreciating market, time is your ally. In a flat or declining market, time works against you.

The 2023-2024 Forecast as a Case Study

The First American and Moody's projections from late 2023 are worth examining as a case study, because they illustrate how the transition from rapid to moderate appreciation actually unfolds.

Both forecasters called for national appreciation in the low to mid single digits -- a significant deceleration from the 15 to 19 percent annual gains recorded between 2020 and 2022. Their reasoning was sound: mortgage rates had risen sharply, affordability had declined, and the pandemic-era demand surge was fading.

What actually happened varied significantly by market:

• High-demand metros (parts of the Southeast, Texas, Florida) continued to see moderate appreciation, but well below prior peaks
• Overheated pandemic markets (Boise, Austin, Phoenix) experienced price corrections of 5 to 10 percent before stabilizing
• Rust Belt and Midwest markets -- where many note investors concentrate their portfolios -- saw appreciation slow but remain positive, typically in the 2 to 5 percent range
• Coastal markets with high price points and rate sensitivity saw the most volatility

The national numbers masked enormous regional divergence. This is critical for note investors, because your collateral is not distributed evenly across the national market. Your portfolio has specific geographic concentrations, and what appreciation does in your specific markets matters far more than the national average.

The Built-In Insulation Note Investors Already Have

Note investors are not fully exposed to appreciation slowdowns in the way that traditional real estate investors are. The structure of a note investment provides several layers of protection -- though none of them are absolute.

The Discount Purchase Provides a Built-In Cushion

Note investors rarely buy at par. A non-performing loan with a $60,000 unpaid balance on a $100,000 property might trade for $40,000 to $50,000 depending on the property condition, borrower status, and resolution timeline. That discount creates an immediate equity position. Even if the property value declines moderately, your basis in the asset is far below the fair market value (FMV) of the collateral.

This is the fundamental difference between buying a property at market value and buying the debt at a discount. The property buyer needs appreciation to build equity. The note buyer has equity built in at acquisition. A market that appreciates slowly or stays flat erodes the property buyer's position. It merely slows the improvement of the note buyer's position.

Most NPL Collateral Already Has Significant Equity

After years of double-digit gains from 2020 through 2023, many properties that collateralize non-performing loans carry substantial equity even at current values. A borrower who purchased a home for $80,000 in 2015 with a $75,000 mortgage likely owes around $65,000 today (after amortization and partial payments). If the property appreciated to $140,000 during the boom and has since settled back to $125,000, the LTV is still only 52%. There is $60,000 in equity protecting the note investor's position.

This accumulated equity from prior appreciation cycles is a buffer that insulates portfolios even as current appreciation slows. The insulation is not permanent -- if prices declined 20 or 30 percent nationally, the buffer would erode significantly -- but for the moderate slowdowns that forecasters have projected and that markets have delivered, the existing equity cushion has been more than adequate.

Resolution Timelines Are Where Risk Concentrates

The insulation breaks down when resolution timelines extend. If you acquire a non-performing note expecting to resolve it within 12 months but the borrower is unresponsive, the state has a long foreclosure timeline, and the process stretches to 30 months, then what happens to property values during those extra 18 months matters. In a market appreciating at 15% per year, the delay actually helps you -- the property is worth more by the time you reach resolution. In a flat market, the delay only adds carrying costs (taxes, insurance, servicing fees) without a corresponding increase in collateral value.

This is where appreciation slowdowns most directly affect note investors: they increase the cost of delays without the offsetting benefit of rising property values.

What Metrics Should You Monitor?

Rather than following national appreciation headlines, note investors should track metrics that directly affect their portfolios.

Market-Specific Price Trends in Your Collateral Markets

National appreciation data is a distraction. What matters is what prices are doing in the specific ZIP codes and counties where your properties are located. Tools like the FHFA House Price Index (available at the MSA level), Zillow's Home Value Index, and county-level sales data from public records give you a far more relevant picture than national statistics.

Build a habit of checking quarterly price trends in your top five or ten markets by asset count. If you see appreciation decelerating or going negative in a market where you hold significant collateral, that is an early warning to accelerate resolution efforts on those assets.

Days on Market and Inventory Levels

Appreciation data is a lagging indicator -- it tells you what already happened. Days on market (DOM) and active inventory levels are leading indicators that tell you what is about to happen. When DOM rises and inventory accumulates, prices typically flatten or decline within three to six months. When DOM falls and inventory tightens, appreciation usually follows.

If you are deciding whether to foreclose and sell as REO or negotiate a modification, the local DOM and inventory trends are more actionable than last quarter's appreciation number. A market where homes are selling in 20 days is a very different environment for an REO disposition than a market where homes sit for 90 days.

LTV Distribution Across Your Portfolio

Track the LTV of every asset in your portfolio, updated at least annually with current BPO (broker price opinion) or AVM values. What you want to know is not just the average LTV but the distribution:

• What percentage of your portfolio has LTV below 60%? Those assets have strong equity protection.
• What percentage sits between 60% and 80%? Those assets are adequately covered but have limited margin.
• What percentage has LTV above 80%? Those assets are vulnerable if prices decline even moderately.

A portfolio that was 90% below 60% LTV three years ago may have shifted as you acquired newer assets in markets that have since corrected. If you are not tracking this distribution, a slow appreciation environment can quietly erode your aggregate position without triggering any obvious alarms.

BPO and AVM Staleness

How old are your property valuations? A BPO or AVM that was run 18 months ago in a market that has since softened is giving you a false sense of security. In a fast-appreciating market, stale valuations are conservative (the property is probably worth more than the old number). In a flat or declining market, stale valuations are dangerous (the property may be worth less than you think).

Establish a revaluation schedule. For assets in resolution, refresh valuations every 6 to 12 months. For assets in markets showing signs of softening, refresh more frequently.

Adjusting Your Bidding When Appreciation Slows

The most direct impact of slowing appreciation on note investors is in acquisition pricing. When you underwrite a non-performing note, you make assumptions about what the property will be worth at the time of resolution -- not what it is worth today. If you assume 10% appreciation over your projected resolution timeline and the market delivers 3%, you overpaid.

Price to Today's Value, Not Tomorrow's

The simplest adjustment is to base your bid on current property value with zero appreciation assumed. If the property is worth $100,000 today and your resolution strategy requires it to be worth $100,000 at exit, any appreciation you actually receive is upside -- not a component of your base case.

This approach is more conservative than many note investors practiced during the 2020-2023 boom, when appreciation was so reliable that it became an implicit assumption in pricing models. Removing that assumption reduces your maximum bid on any given asset, which means you either pay less or pass on deals that require appreciation to work.

Widen Your LTV Threshold

If you previously bought notes with LTVs up to 85% because you expected appreciation to bring them below 80% by resolution, consider tightening that threshold. In a slow-appreciation environment, an 85% LTV note stays near 85% for longer. If property values decline even 5%, you are underwater. Setting a maximum acquisition LTV of 70 or 75% gives you a meaningful cushion that does not depend on market direction.

Shorten Your Target Resolution Timeline

Every month a note sits in your portfolio without resolving, carrying costs accumulate. In a fast-appreciating market, the rising property value offsets those costs. In a flat market, carrying costs eat directly into your return. Prioritize assets and strategies with shorter resolution timelines. If you are choosing between two acquisition targets and one is in a judicial foreclosure state with a 24-month timeline while the other is in a non-judicial state with a 6-month timeline, the faster resolution becomes relatively more attractive when you cannot count on appreciation to cover the cost of delay.

How Should You Stress-Test Your Portfolio?

Stress-testing is not a theoretical exercise. It is the practice of asking "what happens to my portfolio if conditions deteriorate?" and making sure you can survive the answer. Here is a framework you can apply today.

Step 1: Refresh Your Valuations

Pull current BPOs, AVMs, or comparable sales for every property in your portfolio. If your last valuation was more than 12 months ago, it is stale. For guidance on pulling your own comparable sales analysis, we have covered this process in detail. Document the current estimated FMV for each property and calculate the current LTV.

Step 2: Apply Decline Scenarios

Run three scenarios across your entire portfolio:

For each scenario, recalculate the LTV on every asset. Identify which assets cross above 100% LTV (meaning you owe more than the property is worth in that scenario). Those are the assets that would generate losses in that environment.

Step 3: Calculate Your Portfolio-Level Exposure

For each scenario, calculate:

• Number of assets above 80% LTV -- these lose most of their equity cushion
• Number of assets above 100% LTV -- these are underwater
• Total dollar exposure on underwater assets -- the difference between UPB and stressed FMV, summed across all underwater assets
• Underwater exposure as a percentage of your total portfolio investment -- this is your maximum loss exposure in that scenario

Step 4: Identify Concentration Risk

Are your underwater or high-LTV assets clustered in specific markets? If 80% of your stressed assets are in three ZIP codes, your portfolio has a geographic concentration problem that a national appreciation figure will not reveal. Consider whether you should accelerate resolutions in those markets, diversify future acquisitions, or adjust your pricing in those geographies.

Step 5: Decide What to Change

Stress-testing is only useful if it drives action. Based on your results:

• If your base case (0% appreciation) shows all assets below 80% LTV, your portfolio is well-positioned. Continue monitoring quarterly.
• If your base case shows assets above 80% LTV, those assets need attention. Prioritize resolution or consider selling the note to reduce exposure.
• If your moderate stress scenario (10% decline) produces significant underwater exposure, your portfolio is over-leveraged relative to current values. Tighten your acquisition LTV standards and accelerate resolutions on high-LTV assets.
• If your severe stress scenario (20% decline) would threaten your ability to continue operating, you have a portfolio construction problem. Reduce concentration, increase cash reserves, and reassess your risk tolerance.

Run this framework every six months. In a stable or appreciating market, the results will be reassuring. In a softening market, they will give you early warning to act before losses materialize. Either way, you will make decisions based on numbers rather than assumptions about where the market is headed.