Zoning, building permits and septic rules in North Bend, Washington

North Bend’s own rules

• Building code adoptedAdopted (with conditions)

  Construction administered by North Bend inside city limits.

  • The CAC applies current technical-code editions; the code identifies International Building Code, International Residential Code, mechanical, fire, plumbing, energy, and other codes.
  • The CAC does not apply to work located primarily in a public right-of-way, including public utility towers, poles, and hydraulic flood-control structures, except cell-phone antenna structures.

  “The following provisions of the CAC, as adopted by the state of Washington and the city, shall apply to the administration of the current edition of the technical codes:”

• InspectionsRequired

  Construction subject to North Bend's Construction Administrative Code inside city limits.

  • Required inspections are those required by the building code, residential code, or other CAC sections.

  “Structural observation does not include or waive the responsibility for the inspections required by the building code or residential code or other sections of the CAC.”

• Local zoningPresent (with conditions)

  Land inside North Bend city limits.

  • North Bend's zoning title establishes bulk and dimensional standards by zoning district and use.

  “To further implement purposes of the zoning title, and to further implement purposes of the respective zoning districts, bulk and dimensional standards are established for respective zoning districts, and in many cases for respective uses within said zoning districts.”

• Zoning districtsPublished (with conditions)

  Zoning districts inside North Bend city limits.

  • Bulk and dimensional standards are established for respective zoning districts and, in many cases, uses within districts.

  “To further implement purposes of the zoning title, and to further implement purposes of the respective zoning districts, bulk and dimensional standards are established for respective zoning districts, and in many cases for respective uses within said zoning districts.”

• SetbacksDistrict specific (with conditions)

  Development subject to North Bend zoning inside city limits.

  • The code states that standards are established for respective zoning districts and, in many cases, respective uses.
  • An administrative adjustment mechanism is provided in Chapter 18.25.

  “Bulk and dimensional standards are outlined in Table 18.10.040 and address the following criteria: (1) minimum lot size; (2) maximum lot size; (3) minimum lot width; (4) minimum front yard setback; (5) maximum front yard setback; (6) minimum side yard setback; (7) minimum rear yard setback; (8) maximum building height; (9) maximum building coverage; (10) maximum impervious surface coverage; (11) maximum building size; and (12) floor area ratio.”

• Lot coverageDistrict specific (with conditions)

  Development subject to North Bend zoning inside city limits.

  • The code states that standards are established for respective zoning districts and, in many cases, respective uses.
  • An administrative adjustment mechanism is provided in Chapter 18.25.

  “Bulk and dimensional standards are outlined in Table 18.10.040 and address the following criteria: (1) minimum lot size; (2) maximum lot size; (3) minimum lot width; (4) minimum front yard setback; (5) maximum front yard setback; (6) minimum side yard setback; (7) minimum rear yard setback; (8) maximum building height; (9) maximum building coverage; (10) maximum impervious surface coverage; (11) maximum building size; and (12) floor area ratio.”

• Building heightDistrict specific (with conditions)

  Development subject to North Bend zoning inside city limits.

  • The code states that standards are established for respective zoning districts and, in many cases, respective uses.
  • An administrative adjustment mechanism is provided in Chapter 18.25.

  “Bulk and dimensional standards are outlined in Table 18.10.040 and address the following criteria: (1) minimum lot size; (2) maximum lot size; (3) minimum lot width; (4) minimum front yard setback; (5) maximum front yard setback; (6) minimum side yard setback; (7) minimum rear yard setback; (8) maximum building height; (9) maximum building coverage; (10) maximum impervious surface coverage; (11) maximum building size; and (12) floor area ratio.”

• Who permits septicMixed (with conditions)

  Sewage disposal systems inside North Bend city limits.

  • North Bend incorporates King County Board of Health Codes and applicable King County health-department standards, including subsequent amendments, as controlling within city limits.

  “The city hereby adopts the King County Board of Health Codes and all other applicable health standards of the King County health department, as currently enacted or as may be subsequently amended, for the purpose of prescribing regulations and controls of sewage disposal systems, providing for certificates of competency for sewage disposal system designers and sewage disposal system installers, requiring permits, and defining offenses, and providing for the protection of human health and safety.”

• Septic permitRequired

  Sewage disposal systems inside North Bend city limits.

  • North Bend adopts King County Board of Health Codes and other applicable King County health-department standards, as enacted or subsequently amended.

  “The city hereby adopts the King County Board of Health Codes and all other applicable health standards of the King County health department, as currently enacted or as may be subsequently amended, for the purpose of prescribing regulations and controls of sewage disposal systems, providing for certificates of competency for sewage disposal system designers and sewage disposal system installers, requiring permits, and defining offenses, and providing for the protection of human health and safety.”

• Off-grid sanitationLimited

  New single-family detached dwellings and ADUs relying on on-site sewage systems inside North Bend city limits.

  • A single-family detached dwelling on an individual parcel may avoid the sewer-connection requirement only if no sewer line is within 150 feet measured along public right-of-way or dedicated easements; the exception excludes plat and short-plat development.
  • An ADU on an existing on-site sewage system requires either no sewer line within 150 feet or written King County health-department approval that the ADU will not require expansion or alteration of the existing on-site system.

  sewer-line distance for stated exception: < 150 feet (Measured along public right-of-way or dedicated easements.)

  “New construction of one single-family detached dwelling on an individual parcel, when no existing sewer line is located within 150 feet of the property line of said parcel as measured along the public right-of-way or dedicated easements. This exception is intended for individual property owners, and shall not apply to any parcel being developed under a plat or short plat.”

• Mandatory utility hookupSewer (with conditions)

  New houses, buildings, or properties used for human occupancy, employment, recreation, or other purposes inside North Bend city limits.

  • Connection must occur before certificate of occupancy, or before final plat or final short-plat approval for residential subdivisions.
  • An individual-parcel single-family detached dwelling is excepted when no existing sewer line is within 150 feet of its property line measured along public right-of-way or dedicated easements; this exception does not apply to a parcel developed under a plat or short plat.
  • An ADU on a parcel served by an existing on-site sewage system is excepted when no sewer line is within 150 feet measured along public right-of-way or dedicated easements, or when written King County health-department approval shows the ADU will not require expansion or alteration of the existing system.

  sewer-line distance for stated individual-parcel exception: < 150 feet (Measured along public right-of-way or dedicated easements; only for new construction of one single-family detached dwelling on an individual parcel.)

  “New Construction. The owner of all new houses, buildings, or properties used for human occupancy, employment, recreation or other purposes, is required at his or her sole cost and expense to connect toilet and wastewater facilities therein directly with the proper public sewer prior to the issuance of a certificate of occupancy, or, in the case of residential subdivisions, prior to final plat or final short plat approval.”

Rules another office applies inside North Bend

North Bend 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 sizeSpecified

  Single-family dwellings, including designated manufactured homes, in North Bend's LDR residential district.

  • The table states an average lot size of 8,000 square feet as well as the minimum.

  minimum lot size: 7500 square feet (LDR single-family dwellings, including designated manufactured homes.)

  “Single-Family Dwellings (includes designated manufactured homes) (2) | Average lot size: 8,000 sf; minimum lot size: 7,500 sf (2)”

  One more reviewed finding on this topic

  • Specified — Single-family dwellings in North Bend's CLDR residential district.

    “Single-Family Dwellings (includes designated manufactured homes) (2) | Average lot size: 8,000 sf; minimum lot size: 7,500 sf (2) | Minimum lot size: 18,000 sf”

• Manufactured homesLimited

  Designated manufactured homes treated as single-family dwellings in North Bend's LDR residential district.

  • The table gives an average lot size of 8,000 square feet and a minimum lot size of 7,500 square feet for the stated LDR use.

  minimum lot size: 7500 square feet (LDR single-family dwellings, including designated manufactured homes.)

  “Single-Family Dwellings (includes designated manufactured homes) (2) | Average lot size: 8,000 sf; minimum lot size: 7,500 sf (2)”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask North Bend or King County directly.

• Building permit — New residential construction inside North Bend city limits.
• Owner-builder exemption — Owner-built residential construction inside North Bend city limits.
• Certificate of occupancy — New residential construction inside North Bend city limits.
• Minimum dwelling size — Dwellings inside North Bend city limits.
• Living in an RV — RV occupancy on private land inside North Bend city limits.

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.

Off-grid gear

Going off-grid in North Bend 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.

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