CostolioPool installation cost in Marin County
In Marin County, the median declared value on 121 pool installation permits issued to was $120,000, according to Building Permit permit data (checked ).
Pool installation cost in Marin County: permit figures
| Figure | Value |
|---|---|
| Median | $120,000 |
| 25th percentile | $75,000 |
| 75th percentile | $186,238 |
How this was counted
121 permits · 2022-01-11 to 2026-10-05 · Source: Building Permit · Filter: https://data.marincounty.gov/resource/mkbn-caye.json?$where=issued_date >= '2022-01-01' (paged by :id) ; rule: keyword /POOL/ AND /NEW|INSTALL|CONSTRUCT|GUNITE|SHOTCRETE|FIBERGLASS|BUILD|IN-?GROUND/ AND NOT /DEMO|REMOV|\bFILL|ABANDON|HEATER|SOLAR|BARRIER|FENCE|ALARM|EQUIPMENT|PLASTER|RESURFAC|REMODEL|REPAIR|CAR ?POOL|POOL HOUSE|BONDING|PUMP|GAS LINE|NEW (SFD|S\.?F\.?D|SINGLE[- ]FAMILY|DWELLING|HOUSE|HOME|BUILDING|\d+[- ]STORY|DUPLEX|CONDO|APARTMENT)|ADDITION|\bADU\b|COMMERCIAL|HOTEL|APARTMENT/ ; residential only ; cost>0 · Pulled: 2026-11-02T14:19:22-08:00 · Checked on: 2026-11-02 · Contains data from Marin County (all jurisdictions in dataset), made available under the Open Data Commons ODbL
What a pool installation permit usually covers
Building a new in-ground swimming pool or spa. Usually the pool shell, plumbing, electrical and the safety barrier the permit inspects. Landscaping, decking beyond the pool edge, fencing upgrades and covers are often priced separately.
Pool installation in Marin County compared with other places
Among the 2 places where we have pool installation figures, Marin County has the median at position 2 from lowest. Lower medians: Anaheim. Marin County has the highest median of these.
Other Marin County projects with figures: Water heater replacement, Electrical panel upgrade, Seismic retrofit (foundation).
Read this first. Permit values are self-reported by the applicant to set permit fees. They often leave out materials or labor, and they are not what the contractor actually charged. A quote above or below this range can be reasonable.
About this Marin County sample
- 121 permits after dropping $0 or blank values (1% of keyword matches had no cost)
- cost field
construction_valuein Building Permit - permits issued 2022-01-11 to 2026-10-05
Pool installation permits in Marin County by year
35 of these permits were issued in 2022, the busiest year in this sample. Counting only full years, the number of permits went down in 2023, then up in 2024, then down in 2025. 2022 and 2026 are partial years here, so their counts are lower.
| Year issued | Permits | Median |
|---|---|---|
| 2022 | 35 | $125,000 |
| 2023 | 22 | fewer than 30 permits |
| 2024 | 24 | fewer than 30 permits |
| 2025 | 21 | fewer than 30 permits |
| 2026 | 19 | fewer than 30 permits |
By month issued, the busiest months were June, July, March, and the quietest were December, November, February.
What the Marin County pool installation permits describe
We read the description each applicant wrote, leave out the standard wording the city adds to every permit, and sort the permit by the words it uses. The permit type the city chose is not used here. Where the description does not say, we count it as not stated. The most common kind here is pool only.
- Pool only: 80 permits (66%), median $105,356
- Pool and spa: 37 permits (31%), median $146,000
- Not stated in the description: 4 permits (3%)
Other work listed on the same Marin County permits
Out of 121 Marin County pool installation permits with a description of their own, 3 (2.5%) also mention structural or framing; 3 (2.5%) also mention electrical work; 2 (1.7%) also mention windows or doors.
How we matched pool installation permits in Marin County
Marin County has no permit type for this work, so we count a permit when its description mentions pool, with words like new, install, gunite or fiberglass. We leave out permits whose description mentions demolition, removals, filling in, abandoning, heaters, solar, safety barriers, fences, alarms, equipment only, replastering, resurfacing, remodels, repairs, carpools, pool houses, electrical bonding, pumps, gas lines, new homes and buildings, additions, ADUs, commercial work, hotels or apartments. We keep only permits for homes, not commercial buildings, and only permits with a declared value above $0.
Counted from the same 121 permits as the figures above (2022-01-11 to 2026-10-05). Source: Building Permit.
Contains data from Marin County (all jurisdictions in dataset) (source), made available under the Open Data Commons ODbL. Figures derived from it are shared under the same license (share-alike).
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