Mendocino County, California
Willits is a city in Mendocino County, California. Willits adopts its own zoning, so inside its limits Willits’s rules apply, not the county’s. Septic permits inside Willits come from Willits. 16 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Mendocino County page.
Land inside Willits city limits
“shall be permitted within the single-family residence (R1) zone only when all of the following findings can be made”
R1 single-family residence zone inside Willits city
minimum lot area: >= 6000 sq ft
“Minimum lot area 6,000 square feet; B. Minimum lot width 60 feet;”
“Minimum lot area 20,000 sq. feet; B. Minimum lot width 100 feet;”
R1 zone inside Willits city
front yard: >= 20 ft · rear yard: >= 20 ft · side yard: >= 6 ft
“Minimum yards: 1. Front 20 feet; 2. Rear 20 feet; 3. Side 6 feet;”
“Minimum yards: 1. Front 25 feet; 2. Rear 20 feet; 3. Side 10 feet;”
R1 zone inside Willits city
maximum ground coverage: <= 40 percent
“Maximum ground coverage 40 percent; E. Minimum yards:”
“Maximum ground coverage 25 percent; E. Minimum yards:”
R1 zone inside Willits city
maximum building height: <= 35 ft
“3. Side 6 feet; F. Maximum building height 35 feet.”
“3. Side 10 feet; F. Maximum building height 35 feet.”
Camping inside Willits city
“Overnight camping on private residential property so long as the owner or lawful occupant consents, and the camping does not create a public or private nuisance,”
Manufactured homes in the R1 zone inside Willits city
“shall be permitted within the single-family residence (R1) zone only when all of the following findings can be made”
Septic and other on-site sewage disposal inside Willits city
“It is unlawful to construct or maintain any privy, privy vault, septic tank, cesspool, seepage pit or other facility intended or used for the disposal of sewage within the city, except in connection with facilities approved by the director”
Septic systems inside Willits city
“It is unlawful to construct or maintain any privy, privy vault, septic tank, cesspool, seepage pit or other facility intended or used for the disposal of sewage within the city, except in connection with facilities approved by the director”
Privies, septic tanks, cesspools and similar disposal inside Willits city
“It is unlawful to construct or maintain any privy, privy vault, septic tank, cesspool, seepage pit or other facility intended or used for the disposal of sewage within the city, except in connection with facilities approved by the director”
Buildings with plumbing fixtures inside Willits city
“Every building or structure in which plumbing fixtures are installed, and every premises having piping thereon, which conveys sewage or other liquid wastes to an approved point of disposal, shall be connected to the city's sewer system.”
Driveway approaches in the public right-of-way inside Willits city
performance deposit: 100 USD (returned upon completion)
“It is unlawful for any person, firm or corporation to construct, or cause to be constructed in the city any sidewalk, driveway approach, curb, or curb and gutter without first obtaining”
We looked and could not find an official answer yet. Silence is not permission; ask Willits or Mendocino County directly.
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 Willits publishes no rule on the point, not that none exists. Mendocino County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Willits means bringing your own water and power. The kit we’d start with:
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