Which cities is the Kolmo permit lookup verified for?

Ten cities: Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Renton, Kent, Federal Way, and Mercer Island. For these, every fee, threshold, and timeline is sourced from the city directly with the exact quote, URL, and the date Kolmo sourced it; an automated scanner monitors the source pages daily for drift. Outside these ten cities address lookup still works and we render the parcel and Washington-state baseline code, but per-city specifics are flagged as unverified.

Does the lookup cover unincorporated King, Pierce, or Snohomish County?

Address lookup works and parcels resolve to the county building department, but unincorporated coverage is currently baseline-only — Washington-state IRC, IBC, and WSEC plus state critical-area rules. Per-county fee and code deviations have not been verified to the same standard as the ten verified cities.

Will this replace calling the permit center?

For most homeowner projects — decks, kitchens, bathrooms, ADUs, fences, siding, windows, flooring, roofing, HVAC, electrical, plumbing — the published answer matches what the permit center will say, and the homeowner can submit with a pre-filled application packet. For variances, conditional uses, or unusual scope, calling the city planner is still recommended.

Where does the address go after submission?

The address is geocoded via Google Maps to identify the correct county, then queried against public county GIS endpoints. Parcel data is cached for 30 days. The address is not contacted, sold, or shared with third parties.

Who built this — and why?

Built by Kolmo Construction, a licensed Seattle-area general contractor. The team works with permit code daily and built this to fix the public web's poor coverage of homeowner permit questions. The lookup is free; if a homeowner wants a contractor for the project, Kolmo is one option.

Addition permits in City of Tacoma: fees, timeline & requirements (2026)

Everything you need to know about pulling a home addition permit in City of Tacoma, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Tacoma Planning & Development Services.

Permit required?

Yes — see threshold below

Permit fee

Plan-review fee scales with valuation per UBC Table 1-A. State surcharge $4.50 per building permit. Trade permits (E/P/M) separate.

Review timeline

30–90 days

When does a home addition need a permit in City of Tacoma?

Permit required for any addition to an existing building, OR any new accessory structure ≥200 sqft. Alteration/addition <80% of building valuation = Residential Alteration (BLDRA) permit. ≥80% = Residential New Construction (BLDRN) permit (which subsumes site-development review).

Required submittals

site plan to scale 1"=20'
floor plan 1/4"=1'
building elevations
foundation plan
roof framing plan
wall sections
plumbing/mechanical plans

Inspection sequence

foundation/footing
plumbing rough-in
electrical rough-in
mechanical rough-in
framing
insulation
drywall
final

Contractor specialties needed

general

Notes & caveats

From Tacoma residential-permit-process tip sheet: "BLDRA (Residential Alteration/Addition) — Remodels, additions, alterations of less than 80% building valuation, miscellaneous structures without living space or storage space (i.e. walls, fences, pools)." From garages-and-sheds tip sheet: "A building permit is required for any addition to an existing building or for any new accessory structure that is 200 square feet or larger." Applies to single-family + duplex + townhomes (≤6 units, ≤3 stories).

Addition permit fee estimate in City of Tacoma

Worked example for a $120,000 home addition project (building permit). Your actual fee scales with project valuation.

Building permit fee	$1,105.75
Plan review	$718.74
WA state surcharge	$4.5
Estimated total	$1,828.99

Plan-review fee scales with valuation per UBC Table 1-A. State surcharge $4.50 per building permit. Trade permits (E/P/M) separate. Computed from the City of Tacoma fee bracket schedule · source ↗. Impact/utility fees may apply separately.

How to apply

1. Confirm your parcel's zoning & overlays. Run an address lookup for your City of Tacoma home addition — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
2. Assemble submittals (7).
3. Submit through the city portal: Tacoma Planning & Development Services ↗
4. Track review (typical: 30–90 days). Respond to reviewer comments promptly.
5. Pay issuance fees (Plan-review fee scales with valuation per UBC Table 1-A. State surcharge $4.50 per building permit. Trade permits (E/P/M) separate.) and pick up the permit. Inspection card travels with the job.

Compare this against other cities

Side-by-side home addition requirements across all 10 verified Seattle-area cities.

All City of Tacoma permits

Every project type — ADU, addition, kitchen, bath, deck, fence, and more — for City of Tacoma.

Addition permits in City of Tacoma — FAQ

When does a home addition need a permit in City of Tacoma?

How much does a home addition permit cost in City of Tacoma?

For a $120,000 home addition project, the estimated City of Tacoma permit fee is about $1,828.99 — building fee $1,105.75 + plan review $718.74 + surcharges. Fees scale with project valuation per the city schedule.

How long does City of Tacoma take to review a home addition permit?

Typical review window: 30–90 days.

City of Tacoma resourcesPermit portal ↗Fee schedule ↗