If you want to reduce tenant turnover in San Diego right now, the single most profitable move is often the quietest one: renew your good tenant before August 1 instead of pushing for the biggest rent increase you’re legally allowed. With county vacancy at its highest level in years and a fresh round of rent-cap changes landing this week, an empty unit costs far more than a modest bump earns.
I had this exact conversation with a San Diego owner on Tuesday. He was ready to send a big increase notice. By the time we ran the real numbers together, he’d decided to keep his tenant at a small bump instead — and protect a year of cash flow in the process.
Who this is for
This one’s for San Diego rental owners staring at a renewal decision this summer — especially out-of-area owners who never want another 11 p.m. maintenance call, and investors who care more about steady monthly cash flow than a headline rent number. If you own a home, condo, or small multifamily anywhere from Carmel Valley to North Park and your lease is coming up, keep reading before you fill out that increase notice.
The fear nobody talks about
Here’s the feeling I hear most: you send the increase, the tenant balks, they give notice — and now you’re staring at a unit that could sit for weeks in a softer market, bleeding rent every single day while you scramble to turn it. That anxiety is real this year, and the market data explains why.
San Diego’s rental math changed in 2026
The market you’re renewing into is not the market from three years ago. San Diego’s multifamily vacancy rate sat at 5.5% in the second quarter of 2026 — up 60 basis points from 4.9% a year earlier, according to Kidder Mathews’ Q2 2026 San Diego Multifamily Market Report. Average asking rent was essentially flat, up just 0.82% year over year to about $2,453 a month.
Why the softening? Supply. San Diego absorbed a historic wave of new apartments — thousands of units delivered in 2025 with several thousand more arriving in 2026, well above what the market typically absorbs in a normal year. That’s given renters options they haven’t had in a decade, and it’s why downtown landlords are now offering concessions like a free month just to fill space. Translation for you as an owner: when a good tenant leaves today, backfilling them takes longer than it used to.
What tenant turnover actually costs
Most owners quietly budget $1,000–$2,000 for a turnover. The real number is much higher. San Diego property managers put the true, all-in cost of a single turnover somewhere in the $4,000–$7,000 range once you add up make-ready cleaning and repairs, paint, marketing, leasing fees, and screening — with one local analysis of 400+ rentals pegging the typical figure near $3,872 per unit (ChooseRMG, 2026).
Then add the part that hurts most: lost rent while the unit sits. At $2,453 a month, even a six-week vacancy is roughly $3,400 gone. Stack that on top of make-ready costs and one turnover can easily run $7,000–$10,000 in real money.
Now put it against the upside of a big increase. On a $2,453 rent, the maximum increase allowed this year works out to about $201 more per month — around $2,412 over a full year, if the tenant stays. If that increase is what pushes them out the door, a single turnover can erase two to four years of the gain you were chasing. That’s the math that changed my client’s mind.
The August 1 rent-increase decision (AB 1482)
Here’s the timely piece. New rent-cap figures under California’s AB 1482 take effect August 1, 2026. For San Diego, the maximum allowable annual increase for covered units is 8.2% — that’s 5% plus the regional CPI of 3.7% — for increases taking effect between August 1, 2026 and July 31, 2027, per the California Apartment Association.
- The cap is 5% + local CPI, or 10%, whichever is lower — so 8.2% is a ceiling for San Diego this year, not a target.
- Not every property is covered the same way. Homes built before 2005 are generally subject to AB 1482, but single-family homes and condos can be exempt if the right notice was given, and some local rules are stricter.
- Just-cause and proper notice requirements come with all of this.
This is education, not legal advice — confirm your property’s specific status and notice requirements with your attorney or a qualified property manager before you send anything. The point isn’t can you raise 8.2%. It’s should you, given what a vacancy costs right now.
How to reduce tenant turnover in San Diego this year
In a market where new tenants have more choices and units sit longer, your best tenant is almost always the one already in your property. Here’s what actually keeps them:
- Start the renewal conversation early. Reach out 60–90 days before the lease ends, before they’ve started browsing all those new buildings offering free rent.
- Price the renewal to retain. A modest, fair increase a reliable tenant will happily accept usually beats a maximum increase that triggers a $7,000+ turnover.
- Be the landlord who fixes things fast. Responsiveness is the number-one reason good tenants stay. This is exactly where hands-off, professionally managed properties pull ahead.
- Offer a small, visible upgrade. New fixtures, fresh paint, or a smart thermostat at renewal costs a fraction of a turnover and makes staying feel like a win.
- Consider a longer lease. A two-year renewal at a sensible rate locks in cash flow and takes next year’s vacancy risk off the table entirely.
What most owners get wrong is treating the rent number as the whole decision. The real decision is total return over the next 24 months — and retention usually wins that one.
We’re living this ourselves right now. As we reposition our own portfolio toward steady monthly cash flow, the lesson keeps repeating: protecting a good, paying tenant is one of the highest-return moves an owner can make. We try to practice what we preach.
Frequently asked questions
How much can a landlord raise rent in San Diego in 2026?
For units covered by AB 1482, the maximum increase effective August 1, 2026 is 8.2% (5% + 3.7% CPI), capped at 10% overall. Some properties are exempt and some local rules are stricter — confirm your specific situation before issuing a notice.
What does tenant turnover really cost in San Diego?
Plan on $4,000–$7,000 in direct make-ready, marketing, and leasing costs, plus lost rent while the unit sits — which in today’s softer market can stretch to six weeks or more.
Should I raise the rent or renew my tenant?
Run both numbers. If a big increase risks losing a reliable tenant, the vacancy and turnover cost often outweigh the extra rent. A modest increase that keeps a good tenant frequently produces more actual cash over two years.
Not sure what your rent should be this year?
If you’re weighing a 2026 rent increase, don’t guess. Request a free Rental Performance Review from Big Returns — we’ll benchmark your rent against current San Diego data, model the renew-vs-raise math for your specific property, and show you the move that protects your cash flow. Email Hello@bergequitygroup.com with your property address to get started.
Amara leads Big Returns, a San Diego luxury property management and real estate investment firm — helping owners protect the asset, grow the return, and stay completely hands-off.
Request your free Rental Performance Review: Hello@bergequitygroup.com
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Big Returns / Berg Equity Group — a licensed California real estate brokerage (DRE license # available on request).