HELOCs in San Diego, CA

Home equity in San Diego by the numbers: what a typical home could support, what owners pay, and the local issues that affect a HELOC. From a loan officer based in Irvine.

Reviewed by Shawn Way, NMLS #1007298★ 4.9 from 111 reviewsUpdated October 28, 2026

Short answer

The median owner-occupied home in San Diego is worth $906,700. With half of that still owed, a lender allowing 85% combined loan-to-value would support a line of about $317,345. HELOC rates for 720+ credit run about 8.00%–9.75% APR as of October 28, 2026.

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San Diego at a glance

	San Diego	San Diego County
Median home value (owner-occupied)	$906,700	$854,700
Owner-occupied homes	47.3%	54.6%
Monthly owner costs, with a mortgage	$3,252	$3,184
Monthly owner costs, no mortgage	$856	$871
Median household income	$108,077	$106,268
People per household	2.52	2.72

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024 for San Diego, 2020–2024 for the county). San Diego population: 1,406,106. Census QuickFacts.

Among the 6 San Diego County cities on this site, San Diego ranks 3rd for median home value and 6th for the share of owner-occupied homes.

Put this into your own numbers.

Use a free calculator, or get your HELOC rate from Shawn.

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How much a typical San Diego home could support

At the median value of $906,700 and an 85% combined loan-to-value cap:

Mortgage balance	Possible line	Interest-only on $100K drawn at 7.75% APR
$0 (paid off)	$770,695	$646
$226,675	$544,020	$646
$453,350	$317,345	$646
$634,690	$136,005	$646

Your own home's value and your income set the real number. Run your numbers.

Keeping a low rate in San Diego

A San Diego owner with a typical $906,700 home and $453,000 left on a 3.25% mortgage needs $75,000 for a remodel. Keeping the mortgage and adding a HELOC at 7.75% APR on a 20-year payoff costs about $2,823 a month in total. A cash-out refinance of $528,000 over 30 years at an illustrative 6.5% interest rate would cost about $3,337 a month in principal and interest for 360 months. Compare your own numbers.

Living in San Diego: what lenders notice

San Diego neighborhoods west of Interstate 5 are largely in the coastal zone, where additions and ADUs can need coastal permits. Homes on canyon edges face wildfire-related insurance scrutiny. Many owners are active-duty or veteran borrowers with VA loans at low rates, a strong case for keeping the first mortgage and adding a line.

What the numbers say about San Diego

San Diego's median home value is 6% above the San Diego County median of $854,700.
47.3% of homes are owner-occupied, compared with 54.6% countywide.
Owners who've paid off their mortgage still spend a median $856 a month on property taxes, insurance and fees. On a paid-off home, a HELOC sits in first position and usually gets the best pricing.
Median monthly costs for owners with a mortgage run $3,252, about 36% of the median household income of $108,077. Lenders look at total debts against income; most want them under about 43%.

California rules that affect your HELOC

California is a community property state, so a spouse usually signs the HELOC documents even if not on the loan.
A HELOC doesn't trigger a Proposition 13 reassessment; your property tax base stays the same.
San Diego County's 2026 conforming loan limit is $1,104,000 for a one-unit home. It caps a conventional cash-out refinance, not a HELOC. FHFA.
Every lender requires proof of homeowners insurance before closing. With insurers pulling back in fire-prone parts of California, line up coverage before you apply.

Working with a loan officer

Shawn Way works from Irvine and lends throughout Southern California, comparing HELOC and cash-out options across more than 180 lenders. Get your HELOC rate or call (949) 569-7019.