Bolthole Index

Yolo County, California

Zoning, building permits and septic rules in West Sacramento, California

The City of West Sacramento adopts and administers its own residential zoning under Title 17 of the city code1. The city's Building Division handles building permits2. Septic permits in Yolo County, where community sewer is not available, come from Yolo County Environmental Health, not the city3.

At a glance

Zoning
City of West Sacramento, under Title 17 of the city code1
Building permits
City Building Division; a homeowner, agent or licensed contractor can apply2
Minimum lot size
5,000 sq ft in R-1A, 6,000 sq ft in R-1B, 1 acre in RRA45
Tiny homes on wheels
Allowed as a residential use in RE, RRA, R-1, R-2 and R-2.5; R-3 unconfirmed6
Accessory dwelling units
Permitted in every residential zone7
Septic
Yolo County Environmental Health where community sewer is unavailable3
Owner-builder
California allows owner-builders under Business and Professions Code 7044, with conditions8

Who to call

Building permits

City of West Sacramento Building Division (Community Development Department)

Building permits and inspections inside West Sacramento city limits

(916) 617-4645

[email protected]

1110 West Capitol Avenue, 2nd Floor, West Sacramento, CA 95691

Planning & zoning

City of West Sacramento Planning Division (Community Development Department)

Zoning questions and planning applications inside West Sacramento city limits

(916)-617-4645

[email protected]

1110 West Capitol Avenue, 2nd Floor, West Sacramento, CA 95691

Septic permits

Yolo County Environmental Health Division, Land Use Protection Unit

Septic (OWTS) permits, water well permits and small public water systems in Yolo County

(530) 666-8646

[email protected]

292 W. Beamer Street, Woodland, CA 95695

Contact details are copied from each office’s official page and were checked against it on October 23, 2026.

Off-grid gear

Going off-grid in West Sacramento means bringing your own water and power. The kit we’d start with:

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Does West Sacramento have zoning, and what does it mean for lot size and setbacks?

Yes. The City of West Sacramento adopts and administers its own residential zoning under Title 17 of the city code, and the residential zones are RE, RRA, R-1, R-2, R-2.5 and R-319. Yolo County's zoning covers only unincorporated land, so county zoning does not apply inside the city10.

Lot size depends on the district. West Sacramento's R-1A district requires 5,000 square feet and R-1B requires 6,000 square feet, though smaller lots may be allowed by conditional use permit4. The rural RRA district requires 1 acre5.

In R-1A the front setback is 20 feet and in R-1B it is 15 feet11. In RRA the front setback is 20 feet and the interior side setback is 10 feet12. R-1 homes are limited to 30 feet in height and 50 percent lot coverage1314; RRA lots are limited to 25 percent coverage15. Commercial and other zones were not reviewed, so ask the Planning Division about any parcel outside these districts16.

Do you need a building permit in West Sacramento, and who issues it?

The City of West Sacramento Building Division, part of the Community Development Department, handles building permits inside city limits2. The division's page lists new construction of a home as a project that requires a building permit, and says a homeowner, their agent or a state-licensed contractor can obtain building permits2.

California lets an owner build or improve their own property under Business and Professions Code 7044 if none of the improvements are intended or offered for sale and the owner does the work personally or with wage employees8. That exemption covers contractor licensing; it does not waive the building permit17.

We could not confirm West Sacramento's adopted building-code amendments, inspection rules or fee schedule; ask the Building Division at2.

Who do you call about zoning and building permits in West Sacramento?

Building permits and inspections go through the Building Division, at 1110 West Capitol Avenue, 2nd Floor, with the email [email protected]2. Zoning questions go to the Planning Division, which takes general inquiries by phone and at [email protected]16.

Both offices sit in the city's Community Development Department. The Building Division advises contacting the Planning Division before any significant investment, because not every project is allowed in every zoning district2. Do not use the Yolo County planning counter for a parcel inside city limits; county zoning covers only unincorporated land10.

How do septic permits work inside West Sacramento?

We could not confirm whether the city administers any septic rule within its limits, so confirm sewer service for a specific parcel with the Building Division before you buy2.

Where community sewer is not available, Yolo County's Environmental Health program regulates septic systems3. Installation needs an approved septic installation permit from Yolo County Environmental Health before work begins, and a new septic installation permit requires a building permit18. Septic and well permits are handled by the Land Use Protection Unit19.

Soils matter countywide: USDA rates only about 2.5% of Yolo County soils as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system if you are ever off sewer20.

Can you live in an RV or tiny home in West Sacramento?

Tiny homes on wheels are listed as a residential use in the RE, RRA, R-1, R-2 and R-2.5 zones of West Sacramento; the table entry for R-3 is unresolved6. Accessory dwelling units are permitted in every residential zone7.

We could not confirm a West Sacramento rule on living in an RV on a residential lot; the zoning table has no RV row, so ask the Planning Division16. State guidance says RVs are not intended as a permanent dwelling unless a local ordinance allows it21. Yolo County's ban on RV living applies to unincorporated land and not to the city22.

Manufactured home parks need a conditional use permit in R-2, R-2.5 and R-3 and are not allowed in RE, RRA or R-123.

Building a home in West Sacramento: the steps, in order

  1. Confirm the parcel's zoning district and its lot size, setbacks and height limits with the Planning Division16.
  2. Ask the Building Division whether your project needs a building permit; new construction of a home does2.
  3. If the parcel is divided or being split, note that land divisions follow Title 16 of the city code24.
  4. Confirm sewer service, or contact Yolo County Environmental Health about septic3.
  5. Check flood status with the city; we could not confirm the city's floodplain rules, though Yolo County requires a development permit in its mapped flood hazard areas for unincorporated land25.

What stays with Yolo County, and what to check before you buy

Septic and well permits stay with Yolo County Environmental Health, not the city319. For land outside city limits, the county's rules apply instead; see the Yolo County page.

County-level figures: Yolo County's effective property tax rate is 0.8%26, and the typical home value is about $624,60827. Yolo County's nearest city of 100,000 or more is about 20 miles from the county center28.

Watch-outs

  • We could not confirm West Sacramento's building-code amendments, permit fees, inspection rules, owner-builder process, floodplain rules or RV rules; call the Building Division or Planning Division before relying on a county answer216.
  • Yolo County's rules on RVs, camping and permit-exempt agricultural buildings apply to unincorporated land, not inside West Sacramento22.
  • The R-3 entry for tiny homes on wheels is unresolved in the zoning table, so confirm with the Planning Division before assuming it is allowed6.

Sources

  1. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  2. City of West Sacramento Building Division (Community Development Department) (cityofwestsacramento.org)
  3. Land Use Programs | Yolo County, quoted and re-checked
  4. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  5. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  6. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  7. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  8. California Business and Professions Code Section 7044 (California statewide rule), quoted and re-checked
  9. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  10. Layer: Zoning (ID: 2), quoted and re-checked
  11. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  12. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  13. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  14. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  15. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  16. City of West Sacramento Planning Division (Community Development Department) (cityofwestsacramento.org)
  17. California Business and Professions Code section 7044, quoted and re-checked
  18. Land Use Programs | Yolo County, quoted and re-checked
  19. Yolo County Environmental Health Division, Land Use Protection Unit (yolocounty.gov)
  20. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  21. hcd.ca.gov (California statewide rule), quoted and re-checked
  22. Yolo County Zoning Code, Section 8-2.1314, quoted and re-checked
  23. Chapter 17.08 Residential Zones, City of West Sacramento, CA (eCode360) (West Sacramento), quoted and re-checked
  24. City of West Sacramento, CA code of ordinances table of contents (eCode360) (West Sacramento), quoted and re-checked
  25. Sec. 8-4.403. Development permit, quoted and re-checked
  26. Effective property tax rate: Bolthole Index county data
  27. Typical home value (Zillow): Bolthole Index county data
  28. Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data

Written October 23, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for West Sacramento

West Sacramento’s own rules

  • Local zoningPresent

    Land inside West Sacramento city limits: the city adopts and administers its own residential zoning under Title 17 (Zoning) of its code.

    • Covers the residential zones in Chapter 17.08 (RE, RRA, R-1, R-2, R-2.5, R-3); commercial and other zones were not reviewed.
    “table 17.08.020, land use regulations—residential zones, sets the land use regulations for the residential zones.”
  • Zoning districtsPublished

    Residential zoning districts inside West Sacramento city limits

    • Residential districts listed are RE, RRA, R-1 (R-1A and R-1B), R-2, R-2.5 and R-3; Chapter 17.03 (zones and zoning map) was listed in the code index but not opened.
    “residential rural estates (re). the re zone is intended to provide for residential development on large lots and provide a transition between agricultural lands and residential designated lands.”
  • Minimum lot sizeSpecified

    Main single-family district R-1 (R-1A and R-1B subdistricts) inside West Sacramento city limits

    • In the R-1, R-2, R-2.5 and R-3 zones, smaller lots may be allowed through conditional use permit approval pursuant to §17.08.040.c, small lot single-unit development.
    • Small lot single-unit development standards in §17.08.040.c (e.g., 2,000 sq ft minimum lot) were seen in the chapter text but not verified for this entry.

    minimum lot size R-1A: >= 5000 square feet (smaller lots by conditional use permit under §17.08.040.c) · minimum lot size R-1B: >= 6000 square feet (smaller lots by conditional use permit under §17.08.040.c)

    “minimum lot size (square feet, unless otherwise indicated) 2.5 acres (a) 1 acre r-1a: 5,000 r-1b: 6,000 5,000 10,000 20,000”
    One more reviewed finding on this topic
  • SetbacksDistrict specific

    Main single-family district R-1 (R-1A and R-1B subdistricts) inside West Sacramento city limits

    • Footnote (c): zero lot line option; interior-yard setbacks along private lot lines may be waived with written approval of the city and the adjoining owner, recorded as a zero lot line agreement on both titles.
    • Cross-references in the table: §17.22.050 (encroachments into required setbacks) and §17.27.090.b.3 (driveway length).
    • The table states that differing setbacks north/south of the deep water ship channel apply to the R-2, R-2.5 and R-3 zones, not R-1.

    front setback R-1A: 20 feet · front setback R-1B: 15 feet · street side setback R-1A: 15 feet · street side setback R-1B: 10 feet · interior side setback R-1: 5 feet (footnote (c) zero lot line option) · rear setback R-1A: 10 feet (footnote (c) zero lot line option) · rear setback R-1B: 15 feet (footnote (c) zero lot line option)

    “street side 20 16 r-1a: 15 r-1b: 10 n of dwsc: major arterials: 20, other streets: 15 s of dwsc: 10 interior side 10 10 5(c) 5(c)”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    Main single-family district R-1 inside West Sacramento city limits

    • Maximum lot coverage of the lot area as stated in Table 17.08.030.

    maximum lot coverage R-1: <= 50 percent of lot

    “maximum lot coverage (% of lot) 25 25 50 50 60 70”
    One more reviewed finding on this topic
  • Building heightSpecified

    Main single-family district R-1 inside West Sacramento city limits

    • Footnote (b): for detached single unit dwellings the first floor plate height shall not exceed 12 feet in the front one-third of the structure.
    • Height and FAR exceptions are in §17.22.070, not reviewed.

    maximum height R-1: <= 30 feet (footnote (b) first-floor plate limit)

    “maximum height (feet) 30(b) 30(b) 30(b) 45(b) 55(b) 65(b)”
    One more reviewed finding on this topic
  • Tiny homesAllowed

    Tiny homes on wheels as a residential use in RE, RRA, R-1, R-2 and R-2.5 zones inside West Sacramento city limits

    • The R-3 cell in the table reads an em dash (—), not the legend's '-' for not allowed; the R-3 status is unresolved.
    • Tiny home standards in the code were not opened; §17.30 and definitions were not reviewed.
    “accessory dwelling unit p p p p p p see § 17.30.040, accessory dwelling units tiny home on wheels p p p p p —”
  • Manufactured homesLimited

    Manufactured home PARKS (not single manufactured homes on individual lots) inside West Sacramento city limits

    • Requires a conditional use permit in R-2, R-2.5 and R-3; not allowed in RE, RRA or R-1 per Table 17.08.020.
    • Rule for a single manufactured home on an individual lot was NOT found in the pages opened; this claim does not answer that.
    “group residential - - c c p p manufactured home park - - - c c c residential care facilities”
  • Accessory dwellingsAllowed

    Accessory dwelling units in all residential zones inside West Sacramento city limits (RE, RRA, R-1, R-2, R-2.5, R-3)

    • Permitted use in every residential zone per Table 17.08.020; the ADU standards in §17.30.040 were NOT opened and are not summarized here.
    • State ADU law may also apply; not verified on an official page in this run.
    “accessory dwelling unit p p p p p p see § 17.30.040, accessory dwelling units”
  • Subdividing landRegulated (with conditions)

    Land divisions inside West Sacramento city limits

    • Governed by Title 16 (Subdivisions) of the city code; the Title 16 chapters were not opened, so procedure and standards are not summarized.
    “title 16 subdivisions (§ 16.04.010 &ndash; § 16.64.430)”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask West Sacramento or Yolo County directly.

  • Building permit — New home construction in West Sacramento city limits
  • Owner-builder exemption — Owner-builder construction in West Sacramento city limits
  • Building code adopted — Building codes in West Sacramento city limits
  • Inspections — Building inspections in West Sacramento city limits
  • Certificate of occupancy — Certificate of occupancy for new homes in West Sacramento city limits
15 more unanswered
  • Minimum dwelling size
  • Living in an RV
  • Camping on your land
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that West Sacramento publishes no rule on the point, not that none exists. Yolo County’s page lists the county offices to call.

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