Unincorporated Kings County, California requires building permits for new construction and for remodeling, expansion or improvement of an existing building1. The Kings County Building Division reviews digital applications, issues permits and inspects permitted work23. The county zones all unincorporated land4 and administers onsite wastewater systems through an approved Local Agency Management Program5.
At a glance
- Building permit
- Required in unincorporated county, issued by the Community Development Agency1
- Zoning
- Yes throughout unincorporated Kings County; allowed uses and development standards depend on the district4678910
- Septic permit
- County-administered under an approved Local Agency Management Program5
- Owner-builder exemption
- Exempts qualifying owner-builders from contractor licensing, not from permits, codes, zoning or inspections11
- Accessory dwelling unit
- Qualifying ADUs are allowed; a completed application on a lot with an existing dwelling has a 60-day decision deadline12
- RV or tiny home living
- Guest RV stays supplementing an existing residence: up to 14 days, at most 3 times yearly; no permanent RV dwelling13
- Floodplain permit
- Required for construction in mapped Zone A or Zone AE14
- Domestic wells
- Regulated by county Environmental Health; confirm whether your project needs the listed well permit15
Who to call
Building permits
Kings County Community Development Agency
Building permits, planning and zoning permits, floodplain development permits, and code enforcement for unincorporated Kings County
1400 W. Lacey Blvd., Bldg. #6, Hanford, CA 93230
Septic permits
Kings County Department of Public Health, Environmental Health Services
Onsite wastewater (septic) system permits and inspections for unincorporated Kings County under the county's Local Agency Management Program
460 Kings County Drive, Hanford, CA 93230
Contact details are copied from each office’s official page and were checked against it on October 12, 2026.
Off-grid gear
Going off-grid in Kings County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Kings County, California?
Unincorporated Kings County requires building permits for a new building and for remodeling, expanding or improving an existing building1. The Building Division reviews applications and issues permits for construction in unincorporated areas3. The 2025 California Building Standards Code took effect January 1, 202616. The county enforces the state building, residential, plumbing, electrical, mechanical, energy and green-building codes, along with county building and flood-damage ordinances3. To apply, register for an Online Permit Center account, wait for Building Department verification, and upload scaled plans and supporting documents as PDF files17. Permitted work receives periodic inspections as construction progresses18.
Who issues Kings County building permits, and what do they cost?
The Kings County Community Development Agency handles building and planning permits from 1400 W. Lacey Blvd., Bldg. #6, in Hanford, California 9323019. Call the Building Division at (559) 852-2670 or email kcgc.building@co.kings.ca.us19. Office hours are Monday through Thursday, 8:00 a.m. to 5:00 p.m., and Friday, 8:00 a.m. to noon19. The agency processes permit applications digitally through the Online Permit Center219. The 2026 schedule prices building and plan-check fees under the applicable building code rather than as one flat amount; work following a Notice of Violation or Stop Work Notice is charged a double fee20.
Does Kings County have zoning?
The Kings County Development Code zones all unincorporated land; the county rules below apply outside city limits4. Hanford, Lemoore and Corcoran have their own city zoning212223. Kings County Environmental Health Services remains the onsite wastewater contact524. County residential districts include RR, R-1 and RM; uses may require Site Plan Review, a Conditional Use Permit or a temporary-use permit6. In the county's commercial use table, P means no zoning permit required, S means Site Plan Review, C means Conditional Use Permit, TUP means a temporary land-use permit, and a dash means prohibited; these classifications do not waive building permits251. RR requires 30,000 square feet, increased to at least one acre with an individual water supply or sewage disposal system; R-1-6 requires 6,000 square feet, while the 3,000-square-foot R-1-3 district is limited to Kettleman City7. In RR, the front setback is 50 feet or at least 80 feet from the road centerline, with ground-floor side and rear setbacks of 20 feet26. Structural coverage is capped at 40% in RR and R-1-20, R-1-12, R-1-8 and R-1-69. Listed residential districts allow heights up to 30 feet, or 50 feet with a Conditional Use Permit10. Ask the Community Development Agency to identify the parcel's district before designing the site19.
How do septic permits work in Kings County?
Kings County administers onsite wastewater systems locally through an approved Local Agency Management Program, while State Water Board policy and regional-board oversight still apply5. New and replacement systems require local permitting, but the exact Kings County application, exemptions and fee schedule could not be confirmed; ask Environmental Health Services what the parcel and proposed system require2724. Reach Kings County Environmental Health Services at 460 Kings County Drive, Hanford, California 93230, phone (559) 584-141124. California requires owners to keep onsite systems working properly, including inspection and pumping as necessary or as local ordinances require; the statewide policy does not set one universal inspection interval28. Only 21.2% of Kings County soil is rated not “very limited” for a conventional septic drain field, so obtain a site evaluation before assuming a standard system will work29.
Can you live in an RV or tiny home on your land in Kings County?
In unincorporated Kings County, guest RV stays must supplement an existing residence: up to 14 days, at most 3 times yearly per residence, never permanent dwelling13. On-site sewage or grey-water discharge is prohibited; only the manufacturer's electrical cord may connect to the residence13. Caring for an infirm parent, grandparent, child, grandchild or sibling allows up to 60 days, ending sooner if care is no longer needed, with a doctor's letter13. Temporary RV parks require Site Plan Review, limit rentals to 11 days and require authorized dump-station disposal; these rules do not authorize living on an ordinary private lot30. Agricultural-employee housing on agriculturally zoned land allows up to 12 temporary RVs with a Temporary Use Permit31. Mobile or manufactured homes require Mobile Home Review32. We could not confirm general private-land camping or a separate tiny-home category; ask the Community Development Agency19. California tiny homes must satisfy their approved housing or vehicle category's rules33. Qualifying ADUs are allowed on residentially zoned lots with existing or proposed dwellings12. Local standards cannot prevent a qualifying 800-square-foot ADU with 4-foot side and rear setbacks, subject to other requirements; this does not establish a principal-home minimum size34.
Building a home in Kings County: the steps, in order
- Start with the Community Development Agency to confirm zoning, required land-use review, lot area, setbacks and height limits19672610.
- Ask Environmental Health Services about site-specific septic requirements and well permitting before committing to a layout24535.
- Register for the Online Permit Center, obtain account verification, and upload scaled plans and supporting documents as PDFs17.
- Projects in mapped Zone A or Zone AE need county floodplain documents before permit issuance1436.
- California's owner-builder exemption covers contractor licensing, with conditions, and does not waive building permits, codes, zoning or inspections; owners cannot perform work covered by the well-drilling license classification11.
- Expect plan review under the applicable building code and periodic construction inspections318.
What should you check before buying land in Kings County?
Kings County averages 7.7 inches of precipitation a year and has experienced severe drought in about 40.4% of recent years3738. Environmental Health Services regulates domestic wells, and the county master fee schedule lists a $490 well permit fee, though we could not confirm which wells need that permit15. California well construction, alteration and destruction go through the local enforcing agency's permitting process; ask Environmental Health Services which requirements apply before relying on a new well3524. Land divisions in unincorporated Kings County are regulated through the Subdivision Map Act and the county Development Code, so ask the Community Development Agency about subdivision approval before buying land you intend to split39. We could not confirm general agricultural-building exemptions, driveway-access requirements or alternative off-grid sanitation rules; ask the Community Development Agency about buildings and access, and Environmental Health Services about sanitation1924.
Watch-outs
- Kings County's Community Development Agency processes permit applications digitally, and the Building Department must verify your Online Permit Center account before all features are available217.
- A change of use previously permitted through a Conditional Use Permit or Site Plan Review requires a Kings County change-of-use/compliance inspection to determine whether a new zoning permit or occupancy classification is needed40.
Sources
- Kings County Grand Jury Final Report, quoted and re-checked
- Kings County Budget Fiscal Year 2022-23, quoted and re-checked
- Kings County Budget 2021-2022, Community Development Agency, quoted and re-checked
- Development Code Text Change 668.17(a), quoted and re-checked
- Local Agency Management Programs (LAMPS) for On-Site Wastewater Treatment Systems (OWTS), quoted and re-checked
- Kings County Development Code, Article 5, quoted and re-checked
- Kings County Development Code, Article 5 — Residential Zoning Districts, quoted and re-checked
- Kings County Development Code, quoted and re-checked
- Kings County Development Code, Article 5 — Residential Zoning Districts, quoted and re-checked
- Kings County Development Code, Article 5 — Residential Zoning Districts, quoted and re-checked
- Owner-Builder Overview, quoted and re-checked
- Accessory Dwelling Unit Handbook March 2026, quoted and re-checked
- Article 1, Zoning Ordinance / Development Code, quoted and re-checked
- Kings County Web Permitting, quoted and re-checked
- EHS Drinking water, quoted and re-checked
- Approved Building Standards, quoted and re-checked
- Kings County Web Permitting, quoted and re-checked
- Kings County Grand Jury Final Report, quoted and re-checked
- Kings County Community Development Agency (countyofkingsca.gov)
- KINGS CO. COMM. DEV. AGENCY - FEES SCHEDULE 2026, quoted and re-checked
- Hanford: Municipal Code, City of Hanford (Kings County), quoted and re-checked
- Lemoore: official source (Kings County), quoted and re-checked
- Corcoran: official source (Kings County), quoted and re-checked
- Kings County Department of Public Health, Environmental Health Services (kcdph.com)
- Ordinance No. 668-1-25, quoted and re-checked
- Kings County Development Code, Article 5 — Residential Zoning Districts, quoted and re-checked
- Onsite Waste Water Treatment Systems, quoted and re-checked
- 2018 Water Quality Control Policy for Siting, Design, Operation and Maintenance of OWTS, quoted and re-checked
- 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
- Article 1, Zoning Ordinance — Standards for Specific Land Uses and Activities, quoted and re-checked
- Article 1, Zoning Ordinance — Standards for Specific Land Uses and Activities, quoted and re-checked
- Article 1, Zoning Ordinance — Standards for Specific Land Uses and Activities, quoted and re-checked
- Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
- Review of County of Kings’ Accessory Dwelling Unit (ADU) Ordinance under State ADU Law, quoted and re-checked
- Well Standards, quoted and re-checked
- Kings County Budget Fiscal Year 2022-23, quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- County of Kings budget document, Community Development Agency, quoted and re-checked
- Kings County Development Code, quoted and re-checked
Written October 12, 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.