Bolthole Index

Clark County, Washington

Zoning, building permits and septic rules in Town of Yacolt, Washington

Town of Yacolt is a town in Clark County, Washington. Town of Yacolt adopts its own zoning, so inside its limits Town of Yacolt’s rules apply, not the county’s. 14 rules below are quoted from official sources and independently re-checked, most recently on October 24, 2026. Rules for unincorporated land are on the Clark County page.

Answers from the rulebook for Town of Yacolt

Town of Yacolt’s own rules

  • Building permitLimited

    Construction inside Yacolt town limits.

    • Initial building-permit application is made to the town clerk or designee on a town form.
    • Minor construction may be exempt only after an application is submitted and approved by the mayor.
    • The minor-construction exemption applies only where value does not exceed $1,500, no contractor is involved, or the work is a fence, and subject to the structural, egress, light, air, ventilation, and licensed-fixture conditions in § 18.100.020.
    • Emergency work still requires a prompt town permit application and payment of otherwise-due fees.

    minor-construction value threshold: <= 1500 USD (Contractor not involved; other § 18.100.020 conditions apply.)

    “Initial application for a building permit shall be made to the town clerk or designee on a form supplied by the town.”
  • Local zoningPresent (with conditions)

    Land inside Yacolt town limits.

    • Zoning districts and maps are established under Town of Yacolt Code Title 18.
    “For the purposes of this title, the town is divided into zoning districts designated as follows:”
  • Zoning districtsPublished (with conditions)

    Land inside Yacolt town limits.

    • The code lists Park (PO), Single-Family Residential (R1-12.5, R1-10, R-6, R-5), Neighborhood Commercial (C1), Community Commercial (C2), and Light Manufacturing (ML).
    • Maps and their related information are adopted as part of Title 18; signed copies are maintained at Town Hall and Clark County assessment and GIS offices.
    “Park [...] Single-Family Residential [...] Neighborhood Commercial [...] Community Commercial [...] Light Manufacturing”
  • Subdividing landRegulated (with conditions)

    Short subdivisions inside Yacolt town limits.

    • A short subdivision is division or re-division into nine or fewer lots, tracts, parcels, sites, or divisions for sale, lease, or transfer of ownership.

    maximum lots through short subdivision process: <= 9 lots

    “the authorized maximum number of lots that may be created through the short subdivision process in the town of Yacolt shall be nine lots.”
  • Building in a floodplainRequired

    Construction or development in an area of special flood hazard inside Yacolt town limits.

    • A development permit must be obtained before construction or development begins.
    • The requirement covers all structures, including manufactured homes, and development including fill and other activities.
    • The mayor is appointed floodplain administrator and may delegate implementation authority.
    • Applications may require plans, elevation information, floodproofing certification, watercourse-alteration description, V-zone design certification, floodway no-rise engineering analysis, and other reasonably required information.
    “A development permit shall be obtained before construction or development begins within any area of special flood hazard”
  • Permit feesVariable (with conditions)

    Building-service and zoning applications inside Yacolt town limits.

    • Fees under Chapter 18.110 are payable when an application is submitted.
    • Fees are nonrefundable except where the town council authorizes a total or partial refund on findings that no town processing or review costs were incurred.
    • Building-services fees are set by resolution.
    “All building services fees will be set by resolution.”
  • Permit processPartial

    Building permits and temporary-dwelling permits inside Yacolt town limits.

    • Initial building-permit applications are made to the town clerk or designee on a town form.
    • Temporary-dwelling applications go to the mayor, require a processing fee, and require a site plan, dwelling description, governmental approval of water supply and sewage disposal, hardship documentation, and a filed declaration.
    • Temporary-dwelling permits are valid for two years and may be renewed for successive two-year periods upon written substantiation of continuing hardship or need.

    temporary dwelling permit term: 2 years (May be renewed for successive two-year periods upon written substantiation.)

    “A temporary dwelling permit shall be valid for two years”

Rules another office applies inside Town of Yacolt

Town of Yacolt does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Minimum lot sizeDistrict specific (with conditions)

    R1-10 and R1-12.5 single-family residential districts inside Yacolt town limits.

    • R1-12.5 minimum lot size uses Method 2 and may change where soil concerns affect minimum building-lot size.

    R1-10 minimum lot area: 10000 sq ft · R1-12.5 minimum lot area: 12500 sq ft (Method 2; soil concerns may change the minimum building lot size.)

    “R1-10 | 10,000 | 60 | 90 | 25 | 5 | 5 | 25 R1-12.5 | 12,500* | 80 | 90 | 25 | 5 | 5 | 25”
    One more reviewed finding on this topic
  • SetbacksDistrict specific (with conditions)

    R1-10 and R1-12.5 single-family residential districts inside Yacolt town limits.

    • Minimum street-side yard is 15 feet.

    front yard: 25 ft · side yard: 5 ft · rear yard: 25 ft

    “R1-10 | 10,000 | 60 | 90 | 25 | 5 | 5 | 25 R1-12.5 | 12,500* | 80 | 90 | 25 | 5 | 5 | 25”
    One more reviewed finding on this topic
  • Lot coverageDistrict specific (with conditions)

    Single-family residential districts R1-12.5, R1-10, R-5, and R-6 inside Yacolt town limits.

    • For R1-12.5 and R1-10, carports are excluded, but the total coverage limitation may not be exceeded by more than 10 percent because of that exception.

    maximum lot coverage: <= 50 percent (R1-12.5 and R1-10 carport exception stated in § 18.25.060.)

    “Maximum lot coverage by building and structures shall not exceed 50 percent. Carports are excluded from this provision; provided, that the total coverage limitation is not exceeded by more than 10 percent as a result of these exceptions.”
  • Building heightDistrict specific (with conditions)

    Single-family residential districts R1-12.5, R1-10, R-5, and R-6 inside Yacolt town limits.

    • Storage sheds are limited to 10 feet, measured at the roof peak.

    maximum building height: <= 35 ft (Storage sheds.) · maximum storage-shed height: <= 10 ft (Measured at peak of roof.)

    “No building or structure with the exception of storage sheds shall be hereafter erected, enlarged or structurally altered to exceed 35 feet in height. No storage sheds shall be hereafter erected, enlarged or structurally altered to exceed 10 feet in height.”
  • Manufactured homesAllowed

    Single-family residential districts R1-12.5, R1-10, R-5, and R-6 inside Yacolt town limits.

    • Manufactured homes are subject to Ordinance 356 as referenced by the residential zoning code.
    • R-5 and R-6 are designated as subject to public sewer availability.
    “Single-family detached dwellings, including manufactured homes subject to Ordinance 356.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Yacolt or Clark County directly.

  • Owner-builder exemption — Owner-built residential construction inside Yacolt town limits.
  • Building code adopted — Building construction inside Yacolt town limits.
  • Inspections — General building construction inside Yacolt town limits.
  • Minimum dwelling size — Single-family residential districts inside Yacolt town limits.
  • Living in an RV — RV occupancy on private land inside Yacolt town limits.
12 more unanswered
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • 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 Town of Yacolt publishes no rule on the point, not that none exists. Clark County’s page lists the county offices to call.

Off-grid gear

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

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