Bolthole Index

Adams County, Washington

Zoning, building permits and septic rules in Othello, Washington

Othello is a city in Adams County, Washington. Othello adopts its own zoning, so inside its limits Othello’s rules apply, not the county’s. 7 rules below are quoted from official sources and independently re-checked, most recently on October 24, 2026. Rules for unincorporated land are on the Adams County page.

Answers from the rulebook for Othello

Othello’s own rules

  • Building permitRequired

    Development and building work inside Othello city limits where a permit is required by Chapter 14.04.

    • A special investigation is required before a permit may be issued when work requiring a permit began without one.
    • For unplatted property, building-permit issuance is subject to § 14.04.070 and may require City Council action or specified exceptions.
    “Whenever any work for which a permit is required by this code has been commenced without first obtaining said permit, a special investigation shall be made before a permit may be issued for such work.”
  • Building code adoptedAdopted (with conditions)

    Buildings and construction inside Othello city limits.

    • The City adopts listed State Building Code appendices and administers the State Building Code subject to local modifications and amendments.
    “Pursuant to Chapters 19.27 and 35A.12 RCW, the State Building Code is established. The following appendices to the State Building Code are adopted for use within the city:”
  • Certificate of occupancyRequired

    Use or occupancy of any residential, commercial, or industrial building inside Othello city limits.

    • The certificate must be issued or deemed issued before occupancy.
    • All conditions precedent to issuance are prerequisites to occupancy.
    • Occupancy without a certificate may result in termination of City services; an owner may appeal a building-official refusal in writing within ten days.
    “Notwithstanding any provision of the International Building Code or the International Residential Code to the contrary, a certificate of occupancy must be issued or deemed to have been issued by the building official prior to the use or occupancy of any building, residential, commercial or industrial.”
  • Local zoningPresent (with conditions)

    Land inside Othello city limits.

    • Title 17 is the City's zoning title; parcel requirements depend on the applicable zoning district and code provisions.
    “The Zoning Code sets the specific rules for how development takes place”
  • Manufactured homesLimited

    Placement of manufactured or mobile homes inside Othello city limits.

    • A proper manufactured-home placement permit must be secured before a manufactured home is located, placed, or set within City corporate limits.
    “No person, firm, or corporation as the owner, buyer, or vendor of a manufactured home or as manufactured home park management shall cause or permit any manufactured home to be located, placed or set within the corporate limits of the city without first having secured a proper manufactured home placement permit.”
  • Mandatory utility hookupWater and sewer (with conditions)

    A City-platted lot lacking extensions or provision of City water and City sewer, when applying for a development or building permit.

    • The affected lot must install City water, City sewer, storm drains, curbs, sidewalks, streets, other community-standard improvements, and fire-protection devices, or post City-approved security equal to estimated remaining extension/improvement costs.
    • The rule addresses currently platted property treated as unplatted for permit purposes.
    “Any lot so affected shall be permitted to develop and a building permit will be issued upon the installation of city water, city sewer, storm drains, curbs, sidewalks, streets and other improvements to community standards, including fire protection devices, or upon the posting of security in an amount approved by the city, which is equal to the estimated cost of the extensions and/or improvements remaining to be installed through the lot, in a form acceptable to the city attorney to insure the construction of the required improvements and extensions at the same time as construction of the building for which the building permit was issued or at the time of the improvement of the affected lot.”
  • Permit processPartial

    Building permits for unplatted land inside Othello city limits.

    • Permits normally issue only for structures in recorded plats.
    • Exceptions include conforming remodels, temporary structures, and certain buildings on approved preliminary plats.
    • A permit for unlawfully divided or otherwise unplatted land is subject to public-interest findings and City Council resolution.
    “Building permits shall be issued only for structures located within recorded plats except as provided in this chapter.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Othello or Adams County directly.

  • Owner-builder exemption — Owner-built residential work inside Othello city limits.
  • Inspections — Building construction inside Othello city limits.
  • Minimum dwelling size — Residential districts inside Othello city limits.
  • Minimum lot size — Residential districts inside Othello city limits.
  • Setbacks — Residential districts inside Othello city limits.
15 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Othello publishes no rule on the point, not that none exists. Adams County’s page lists the county offices to call.

Off-grid gear

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

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