Zoning, building permits and septic rules in Coos Bay, Oregon

Coos Bay’s own rules

• Building code adoptedAdopted (with conditions)

  Buildings in Coos Bay city.

  • Adoption is subject to the specific deletions, amendments, and additions in the city code.

  “hereby adopts the Oregon Structural Specialty Code”

• Zoning districtsPublished (with conditions)

  Land inside Coos Bay city limits.

  • The official Development Code publishes zoning chapters including low-density and small-lot residential, medium-density residential, commercial, industrial-commercial, waterfront, watershed, and other districts.

  “Chapter 17.210 ESTABLISHMENT OF ZONING DISTRICTS AND MAPS”

• Living in an RVLimited

  Recreational-vehicle parks and park-model parks inside Coos Bay city limits.

  • The retrieved ordinance establishes standards for recreational-vehicle and park-model parks; it does not establish unrestricted residential RV occupancy on private lots.

  “Permitted Land Uses. Recreational vehicles as defined in Chapter 17.150 CBDC and one park manager’s unit.”

• Tiny homesLimited

  Permanent tiny homes used as accessory dwelling units inside Coos Bay city limits.

  • The tiny home must be permanent, attached to an approved foundation, and subject to the Oregon Residential Specialty Code and Oregon Fire Code or HUD manufactured-home standards.

  “A permanent tiny home may be attached to an approved foundation”

• Manufactured homesLimited

  Manufactured-home parks inside Coos Bay city limits.

  • The city development code sets standards for manufactured-home parks.

  “All manufactured home parks proposed and developed after the enactment of the ordinance codified in this title shall comply with the provisions of this title.”

• Accessory dwellingsLimited

  A legal lot of record containing a detached single-unit or duplex dwelling inside Coos Bay city limits.

  • One ADU is allowed per qualifying legal lot.
  • An ADU may not be used as a vacation rental.
  • Construction must meet current state residential-specialty-code standards or the tiny-home standard.
  • A city-prepared deed restriction must be recorded.

  ADUs per qualifying lot: 1 (Lot must contain a detached single-unit or duplex dwelling.)

  “One accessory dwelling is allowed per legal lot of record”

• Permit feesVariable (with conditions)

  Demolition permits inside Coos Bay city limits.

  • The fee is due when the permit is issued.
  • The city council sets the flat fee by resolution.
  • The fee includes the sewer cap and any fill necessary to bring the demolition site to a safe grade.

  “The fee shall be a flat fee set by resolution of the Coos Bay city council.”

• Permit processPartial

  Demolition permits inside Coos Bay city limits.

  • This is a demolition-permit process, not a verified complete process for new home construction.
  • A conforming application must be reviewed and the specified fee paid.

  “then a demolition permit shall be issued.”

Still unanswered

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

• Building permit — New residential construction inside Coos Bay city limits.
• Owner-builder exemption — Owner-built residential construction inside Coos Bay city limits.
• Inspections — New residential construction inside Coos Bay city limits.
• Certificate of occupancy — Residential occupancy inside Coos Bay city limits.
• Minimum dwelling size — Single-family residential districts inside Coos Bay 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 Coos Bay 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.

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.