San Diego vs San Mateo County: which is better for Airbnb investment? (2026)

Bottom line

San Diego edges ahead of San Mateo County on higher occupancy (34% vs 24.7%), stronger RevPAR (£71 vs £49).

Head-to-head metrics

	San Diego	San Mateo County
Median occupancy	34%	24.7%
Median daily rate	£223	£200
Median RevPAR	£71	£49
Active listings	9,608	2,237
YoY occupancy	+1.1 pts	+1.7 pts
YoY daily rate	+62.1%	+59.1%
Regulation risk	—	—
Annual night cap	None	None
License required	No	No

Full analysis: San Diego vs San Mateo County

On the money side of this comparison — what a listing actually earns against the nights it has available — San Diego finishes decisively ahead of San Mateo County. Revenue per available night — rate and occupancy combined, the figure that actually reaches an owner — is 45.3% higher in San Diego: £71 against £49. San Diego's listings run at 34% occupancy against 24.7% in San Mateo County, worth 9.3 extra points of booked calendar every year. That is not a rounding difference, and it compounds over a hold period.

San Diego takes both halves of the yield equation, which is less common than it sounds. It charges more per night — £223 against £200 — and still fills more of the year, 34% against 24.7%. A market that leads on price and utilisation at once is normally one where demand has outrun supply, rather than one where hosts are discounting to keep the calendar busy. RevPAR reflects the double advantage at £71 against £49.

That verdict needs a caveat, because San Mateo County is not simply the weaker market of the two. San Mateo County is the less crowded of the two — 2,237 active listings to 9,608 — so a well-run property has fewer near-identical rivals to out-rank. San Mateo County sits at the cheaper end at £200 a night against £223, which lowers the bar for filling shoulder-season dates and usually tracks a lower purchase price too. If your model leans on that dimension, the ordering above can reasonably flip.

Neither San Diego nor San Mateo County currently has a verified short-term rental regulation record in our register, so the comparison above is a yield comparison only. Regulation is the single largest source of downside in this asset class — an unverified market is an unpriced risk, not an absent one.

The two calendars also behave differently. San Diego peaks in September at 51.6% and bottoms in December at 33.1%; San Mateo County runs from 57.8% in October down to 29.4% in February. San Diego is the steadier of the two at 18.5 points peak-to-trough against 28.4 — easier to underwrite against a mortgage — while San Mateo County concentrates its return into a shorter window and rewards operators who price the peak aggressively instead of holding a flat rate all year.

Who each suits, then. San Diego suits buyers who want a conventional, lightly regulated entry. San Mateo County answers to the same regulatory profile, so the split between them is operational rather than legal. It is also the momentum side of this pair. Every figure above comes from the same Inside Airbnb snapshot pipeline on both sides, dated 2026-09, filtered to listings with at least one booking in the last twelve months. Occupancy medians are drawn from 9,608 active San Diego listings and 2,237 in San Mateo County.

Frequently asked questions

Is San Diego or San Mateo County better for Airbnb investment?

San Diego, on the data we track. It leads on stronger RevPAR (£71 vs £49), higher occupancy (34% vs 24.7%), and higher median annual revenue (£25,978 vs £17,870). San Mateo County is not the weak side of this pair, though — it wins on a thinner competitive field (2,237 vs 9,608 active listings).

Which has higher occupancy, San Diego or San Mateo County?

San Diego, at 34% median occupancy against 24.7% in San Mateo County — a gap of 9.3 points. That is a real but modest edge; a well-run listing in San Mateo County can close most of it. Over the last twelve months San Diego gained 1.1 points and San Mateo County gained 1.7 points, so the gap is closing.

Which has higher nightly rates, San Diego or San Mateo County?

San Diego, at £223 a night against £200 in San Mateo County — roughly 11.5% more. Revenue per available night agrees rather than contradicts: £71 in San Diego against £49, so the rate premium survives contact with the occupancy figures.

Which has stronger year-over-year growth, San Diego or San Mateo County?

San Mateo County, on occupancy: +1.7 points over the last twelve months against +1.1 points in San Diego. Nightly rates rose 62.1% in San Diego and rose 59.1% in San Mateo County over the same window. One year of movement is a direction, not a trend — weigh it against the regulation picture before treating it as momentum.

Which is the bigger Airbnb market, San Diego or San Mateo County?

San Diego, with 9,608 active listings against 2,237 in San Mateo County. Size cuts both ways: a deep market gives you comparables, contractors and an exit, while a thinner one means fewer near-identical rivals competing for the same search results.

How much can you earn from an Airbnb in San Diego vs San Mateo County?

San Diego earns more: roughly £25,978 a year for a median listing against £17,870 in San Mateo County. Those are gross booking revenues before cleaning, management, platform fees, furnishing amortisation and tax — budget for a meaningful share of them, and note that a median listing is a median operator, not a good one.

Go deeper on each city

Market guide

Airbnb in San Diego →

Occupancy, ADR, neighborhoods, regulation

Market guide

Airbnb in San Mateo County →

Occupancy, ADR, neighborhoods, regulation

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