Southern California is seeing something homeowners rarely got to enjoy during the last housing downturn: extremely low levels of “underwater mortgages,” where a borrower owes more than the home is worth. New first-quarter 2026 data shows Orange County leading the nation among major markets with the fewest underwater loans—an encouraging sign for household stability and local property values.

For homeowners in San Diego County, Orange County, Los Angeles County, Ventura County, and the Inland Empire, this matters beyond mortgage statements. When more owners have equity, they’re more likely to invest in improvements that protect and grow property value—especially high-impact upgrades like pool resurfacing, plaster repair, and long-term outdoor hardscape durability across Southern California’s sunny, pool-heavy neighborhoods.

Why this housing metric is turning heads across Southern California

Who released the data and who reported it

The figures come from a Cotality report tracking underwater mortgages in the first quarter of 2026 across the 100 U.S. markets with the most mortgages. The analysis was discussed by business columnist Jonathan Lansner of the Southern California News Group.

What “underwater” means in real-world terms

An underwater mortgage happens when a homeowner’s loan balance is higher than the estimated market value of the home. That gap can trap households financially, limit refinancing options, and—when economic stress rises—raise the risk of mortgage default or walking away, which can spread instability through neighborhoods.

Where Southern California ranks nationally

Southern California counties placed among the lowest underwater rates in the country in early 2026, with Orange County at the very top (lowest share) among the 100 biggest U.S. mortgage markets. Ventura County and San Diego County were also near the best in the nation, with Los Angeles County and the Inland Empire still performing strongly relative to most of the country.

When the snapshot was taken

These rankings reflect the first quarter of 2026, providing a timely look at equity conditions as the market adjusts to recent years of price swings and changing lending standards.

Why underwater mortgages are so rare in the region

Two forces are doing much of the work: stricter lending since the Great Recession and persistently high home prices across Southern California. Together, they’ve helped many owners keep or build equity, even as affordability remains a challenge for new buyers.

The hidden homeowner takeaway: Equity changes how people maintain (and protect) their property

When homeowners have equity, they behave differently. They’re more willing to invest in projects that improve enjoyment and reduce deferred maintenance—because they can see a return. In Southern California, where backyard living is part of the lifestyle, swimming pools are often a centerpiece feature that affects appraisals, buyer perception, and inspection outcomes.

But there’s a less obvious risk: when equity rises, some owners rush into upgrades without planning for durability, permitting realities, or proper construction sequencing. Poor workmanship or cutting corners on pool plaster and resurfacing can lead to premature cracking, delamination, leaks, staining, and costly rework—issues that can undermine the very property value homeowners are trying to protect in San Diego County, Orange County, and across Southern California.

What this means for swimming pool owners in San Diego County and greater Southern California

In San Diego County, Orange County, and Los Angeles County, many homeowners use equity as motivation to reinvest—often focusing on outdoor upgrades first: pools, decks, coping, tile, and waterline finishes. A well-executed plaster job can refresh a pool for years; a rushed or mismatched system can create visible defects quickly, especially with heavy sun exposure and regular chemical use.

For homeowners in Southern California who want upgrades that hold up, a swimming pool contractor’s approach matters: surface prep, material selection, bond coats, cure timing, startup chemistry, and realistic maintenance guidance. Those details are what separate a pool that looks great for a season from one that performs for the long run.

How Baja Pool Plaster connects to this moment in the housing market

As equity remains strong across Southern California, many homeowners are choosing to improve what they already own rather than move—especially in higher-cost areas like San Diego County and Orange County. That puts renewed focus on durable, value-preserving renovations.

Baja Pool Plaster supports homeowners looking to protect their property’s usability and curb appeal through professional pool plaster and resurfacing work. If you’re planning to refresh your pool as part of a value-focused improvement plan in San Diego County or elsewhere in Southern California, it’s worth treating the project like an investment: correct materials, correct prep, correct timeline, and correct post-install care.

Local factors that make pool durability a bigger deal in Southern California

Southern California pools face unique stressors: strong UV exposure, year-round usage compared to many regions, mineral-heavy water in some neighborhoods, and frequent outdoor entertaining. In places like San Diego County, Orange County, and Ventura County, cosmetic defects show quickly—and visible wear can impact buyer impressions when homes do change hands.

With underwater mortgages so uncommon in Southern California, the bigger story is how owners use equity strategically. Pool resurfacing is one of those projects where doing it right can support long-term value, but doing it cheaply can create repeated repair cycles and surprise costs.

Actionable takeaways for homeowners considering pool work right now

  • Confirm your pool surface diagnosis before committing: plaster aging, bond failure, and leaks can look similar but require different fixes.
  • Ask your swimming pool contractor about prep steps and cure/startup procedures; many surface problems trace back to shortcuts here.
  • Time your resurfacing realistically; rushing for an event can increase the risk of visible defects later.
  • Match finish choices to your maintenance habits (and local water conditions) to avoid staining and uneven discoloration.
  • Keep documentation of the work (scope, materials, photos) for future buyers, appraisers, or warranty conversations.

Frequently Asked Questions

What is an underwater mortgage and why does it matter for homeowners?
An underwater mortgage means the loan balance is higher than the home’s estimated value. It matters because it can restrict refinancing or selling options and increases default risk during financial stress. Low underwater rates generally signal stronger homeowner equity and neighborhood stability.
Why are underwater mortgages so rare in Southern California right now?
The key drivers are tighter mortgage lending standards since the Great Recession and persistently high home prices across Southern California. Together, these factors help owners maintain equity, even when the broader market cools or interest rates shift.
How does strong home equity affect renovation decisions in San Diego County?
When homeowners have equity, they’re more likely to invest in improvements that boost enjoyment and perceived value—especially outdoor upgrades. In San Diego County, pools are a major lifestyle feature, so resurfacing and plaster quality can meaningfully influence appearance, upkeep costs, and buyer impressions.
When should I consider replastering or resurfacing my pool?
Consider replastering if you see persistent roughness, widespread staining that won’t lift, cracking, delamination, or if the surface has reached the end of its service life. A contractor assessment can confirm whether you need a full resurface or more targeted repair based on the underlying cause.
What should I ask a swimming pool contractor before starting pool plaster work?
Ask about surface prep steps, materials and finish options, cure time, startup water chemistry guidance, expected lifespan, and warranty terms. Also request a clear scope of work and timeline. These details help prevent common issues like premature cracking, staining, and uneven texture.

Improve your pool like an asset, not a quick cosmetic fix

If you’re in San Diego County or elsewhere in Southern California and you’re using today’s strong equity conditions as a reason to reinvest in your home, pool plaster and resurfacing is one of the upgrades that benefits from doing it right the first time. For project guidance or scheduling, connect with Baja Pool Plaster and start with a clear plan built for long-term performance.

Credits: This article is a commentary-based rewrite for informational purposes, based on this source.