Zoning, building permits and septic rules in Willows, California
Willows is a city in Glenn County, California. Willows adopts its own zoning, so inside its limits Willows’s rules apply, not the county’s. 6 rules below are quoted from official sources and independently re-checked, most recently on October 22, 2026. Rules for unincorporated land are on the Glenn County page.
Answers from the rulebook for Willows
Willows’s own rules
Building permitRequired
Most construction, remodeling, additions and structural alterations inside Willows city limits
Permit applications and supporting documents must be submitted for review before construction begins.
Typical permits listed: new building construction; additions and remodels; electrical, plumbing and mechanical work; demolition; accessory structures such as garages, sheds and carports.
Exact exemptions were not reached in the code (Title 15).
“building permits are required for most construction, remodeling, additions, and structural alterations within the city of willows.”
Building code adoptedAdopted (with conditions)
Construction inside Willows city limits
The city enforces the most recently adopted California building standards codes listed on its page (CBC, CRC, CEC, CPC, CMC, Title 24 energy, CALGreen).
“the city of willows enforces the most recently adopted california building standards codes, including:”
Local zoningPresent (with conditions)
Land inside Willows city limits; the City of Willows administers its own zoning code (Title 18) there.
Zoning code text (district standards, use tables) was not reached on eCode360; see search_notes.
“zoning and land use planning staff administer the city’s zoning code and provide information about allowable uses, development standards, and zoning requirements.”
Zoning districtsPartial
Zoning districts inside Willows city limits
Districts listed in the city's July 2026 Title 18 presentation: R-1, R-2, R-3, R-P, CC, GC, HC, LI, HI, OS, AG, PF, A, F, PD.
The presentation is a summary; district standards are in the code and were not read.
“single-family residential district two-family residential district high density residential district”
Subdividing landRegulated (with conditions)
Land divisions inside Willows city limits
The Planning Division reviews and processes subdivision maps, parcel maps, lot line adjustments and lot mergers.
Title 17 (subdivisions) is in the city code; its requirements were not read.
“the department reviews and processes subdivision maps, parcel maps, lot line adjustments, and lot mergers.”
Permit processPartial
Building permit applications inside Willows city limits
Permit applications and supporting documents must be submitted for review before construction begins.
Plan review checks compliance with city and state building codes; the city may request revisions.
Inspection scheduling: Monday through Thursday, by phone at least 24 hours in advance.
“permit applications and supporting documents must be submitted for review prior to beginning construction.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Willows or Glenn County directly.
Owner-builder exemption — Owner-builder construction inside Willows city limits
Certificate of occupancy — Completed construction inside Willows city limits
Minimum dwelling size — Minimum dwelling size for single-family homes in Willows city limits
Minimum lot size — Main single-family residential district (R-1) inside Willows city limits
Setbacks — Main single-family residential district (R-1) inside Willows city limits
17 more unanswered
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
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
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 Willows publishes no rule on the point, not that none exists. Glenn County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Willows means bringing your own water and power. The kit we’d start with:
