San Diego Investment Property Guide

Be honest about the trade-off first. A typical 2-4 unit property here lists around $1.5M and returns a cap rate near 5. On paper, a Cleveland duplex beats that every day of the week. So why do people who can buy anywhere keep buying here?

Supply. San Diego is hemmed in by the ocean, Camp Pendleton, the border, and mountains, and it permits far fewer homes than it adds households. Vacancy hasn’t crossed 5 percent in over fifteen years. When your unit sits empty for two weeks instead of two months, and your rent roll grows through every cycle, the spreadsheet closes the gap on the higher-cap markets faster than most buyers expect.

My take, since you’re here for an opinion: San Diego rewards patient money and punishes forced sellers. If your plan needs to cash out in three years, this is the wrong market. If your plan is to still own the property when your kids are in college, it’s one of the best in the country.

You’ll hear two shorthand metrics constantly, and one client of mine said working with me felt like having “a competitive advantage against bigger investors,” so let me hand you the same tools.

GRM (gross rent multiplier) is the price divided by the yearly rent before any expenses. A $1.5M fourplex collecting $90,000 a year has a GRM of 16.7. Lower is better. In central San Diego, anything under 15 deserves a second look and anything under 13 deserves a same-day showing.

Cap rate is the yearly income after expenses, divided by the price. The citywide range has held around 4.5 to 5 percent. When a listing claims 6, one of three things is true: the rents are projections, the expenses are fiction, or something about the property will make you earn that extra point.

Two rules I hold clients to. Underwrite with today’s actual rents, not the pro forma. And budget real expenses: vacancy, management, insurance, and capital reserves, even if you’ll self-manage at first.

• Clairemont: original-condition 1950s ranches on 6,000+ square foot lots. The play is buy tired, renovate, add an ADU. No Mello-Roos, ever.
• Pacific Beach: the strongest rental demand in the city and reliable turnover of young professionals. You pay for it, at roughly $920 per square foot, but PB rents forgive a lot.
• Ocean Beach: 82.6 percent of residents rent. Small multifamily comes up regularly and tenants stay.
• North Park and City Heights: east of the 163, older apartment stock, lower entry prices, stronger cash flow. More management effort, better yield.
• La Mesa and Spring Valley: outside my core coverage but worth naming honestly, because the entry prices are lower and the yields beat the coast. Plenty of my investor clients buy their first deal there and their third in Clairemont.

1. House hack a 2-4 unit. Live in one unit, rent the rest, buy with an owner-occupied loan at a lower down payment. The single best first move in an expensive market. Full breakdown: Buying a Duplex or 2-4 Units in San Diego.

2. Add an ADU. Construction runs $180K to $450K and Pacific Beach ADUs rent for $2,500 to $3,500 a month. Since January 2026, AB 976 permanently removed owner-occupancy requirements, and San Diego adopted AB 1033, which lets you sell an ADU separately like a condo. The rules moved in the investor’s favor; the details live in the San Diego ADU Guide.

3. Buy and hold, boring on purpose. A clean rental near a job center, held through two cycles, refinanced once. Nobody brags about this at meetups. It builds more wealth than anything else on this list.

4. Roll into a bigger property with a 1031 exchange. Defer the capital gains tax when you sell one rental and buy a bigger one. The deadlines are unforgiving: 45 days to identify, 180 to close. Details and California’s clawback rules: 1031 Exchange in San Diego.

Every market has its landmines. These are San Diego’s, and I look for all four before a client writes an offer.

Short-term rental limits. The city caps whole-home short-term rental licenses at a small fraction of housing stock, with a larger carve-out for Mission Beach. If a listing’s numbers only work as an Airbnb, assume you may never get the license, and buy it only if it works as a long-term rental too.

Rent control on older multifamily. California’s AB 1482 caps annual increases on most apartments older than 15 years. Factor it into your rent-growth assumptions instead of discovering it at your first renewal.

Deferred sewer and electrical. Half of central San Diego was built in the 50s and 60s. I’ve walked clients away from pretty flips sitting on original sewer lines. My construction background is exactly for this: a sewer scope and panel check cost a few hundred dollars and have saved my buyers five figures more than once.

Pro forma rents. The listing says “market rent $3,400.” The tenant pays $2,150 and has been there nine years. California eviction rules mean you buy the rent roll, not the projection.

If you’re starting from zero, here’s the sequence I give new investor clients:

1. Weeks 1 to 2: financing first. Get pre-approved with a lender who actually closes 2-4 unit and investor loans. The loan type decides your strategy, not the other way around.
2. Weeks 2 to 4: define the buy box. One or two neighborhoods, a price ceiling, a minimum unit count or ADU requirement, and a walk-away return. Written down. Vague criteria produce vague offers.
3. Weeks 4 to 10: underwrite twenty, tour eight, offer on two or three. Most deals die in the spreadsheet, which is where they should die. It costs nothing.
4. Escrow: verify everything. Actual leases, actual deposits, sewer scope, panel, permits. The inspection window is where I claw back money or walk you out.

Ninety days is realistic for going from nothing to keys in this market. Two years of “watching the market” is also common. The difference is usually the buy box, and whether anyone ever made you write it down.

I invest here myself, I’ve been around construction my whole career, and about half my business comes from investors referred by past clients or from BiggerPockets. My job on your deal: verify the rents, scope the building, model the real return, and negotiate like it’s my money. One buyer’s first multifamily came with a $30,000 seller credit because we knew the repair costs before we offered.

No newsletter funnel waiting for you here. Send me the deal you’re looking at, or tell me your budget and target return, and I’ll respond with actual numbers. Call or text (619) 568-2649 or message me.

Is San Diego a good place to buy rental property? Yes, for long-term holds. Vacancy has stayed between 4 and 5 percent for over fifteen years and about half the city rents. Yields are modest, around a 4.5 to 5 percent cap rate, so the market rewards patience rather than quick flips.

What is a good cap rate in San Diego? As of Q3 2026, most 2-4 unit properties sell at cap rates between 4.5 and 5 percent. Listings claiming 6 or higher usually rely on projected rents or understated expenses. Verify with actual leases and real expense numbers.

How much do I need to put down on an investment property? Conventional loans on pure investment purchases generally want 20 to 25 percent down. House hacking a 2-4 unit as your primary residence can cut that dramatically, which is why it’s my standard first-deal recommendation.

Can I run a short-term rental in San Diego? Only with a city STRO license, and whole-home licenses are capped citywide with a larger allocation in Mission Beach. Never buy a property whose numbers only work on nightly rates you might not be allowed to charge.

Should I buy an ADU property or build one? Buying a home with a permitted ADU already in place is simpler and finances cleaner. Building one runs $180K to $450K and takes real project management, but on a big Clairemont lot the rent often justifies it. I’ll run both versions of the math with you.