Residential Addition / Remodel Permit in Rock Springs, Wyoming
VerifiedRequired for additions, remodels, alterations, repairs, and detached garages on existing one- and two-family dwellings in Rock Springs. Charged at 50% of the general valuation-based fee table with no separate plan review fee.
Verified 2026-07-01 · Source
When you need this permit
- Any enlargement, alteration, or repair of an existing building or structure requires a permit from the Building Official (§ 150.02(A)(1))
- Applies to residential alterations and additions, including detached garages
- Design must meet adopted design criteria: 30 psf ground snow load, 115 mph wind speed (Exposure C), 42-inch minimum frost depth for any new foundation work
- Detached accessory buildings/garages over 1,500 sq ft combined require a conditional use permit before a building permit can be issued (§ 157.129(D)–(E))
- Contractor must be registered with the City ($125 fee + insurance) if not the homeowner performing their own work
Required documents
- Req
Building Permit Application
City of Rock Springs Building Permit Application form
- Req
Site Plan
Dimensioned site plan showing existing structures, proposed addition footprint, setbacks
- Opt
Detail Sheet — Retaining Wall
City standard detail sheet, available in the Building Inspections Document Center, if retaining walls are part of the project
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Residential alterations and additions, including detached garages | 50% of the general valuation-based fee table in § 150.08(B); no plan review fee charged | Rock Springs Municipal Code § 150.08(B)(3) |
Review timeline
~10–30 business days
Typical estimate — confirm current times with the Rock Springs building department
Inspection process
- 1
Footing / Foundation (if new footings)
Before concrete pour — below 42-inch frost depth
- 2
Framing
After framing complete, before insulation or wall cover
- 3
MEP Rough-In
Electrical, plumbing, mechanical rough-in before walls closed
- 4
Final
All work complete per approved plans
Tips
- Residential additions/remodels and detached garages get a 50% discount off the standard valuation-based fee table AND no plan review fee — a meaningful savings versus new commercial-type construction.
- Detached accessory buildings/garages are capped at 1,500 sq ft combined without a conditional use permit (§ 157.129(D)).
Frequently asked questions
- Is a detached garage cheaper to permit than a full building permit in Rock Springs?
- Yes. Residential alterations, additions, and detached garages are charged 50% of the general valuation-based fee table under § 150.08(B)(3), with no separate plan review fee.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Rock Springs Public Services Department — Building Inspections & Permits (Chief Building Inspector) — official building department
- Rock Springs Municipal Code § 150.08 Fees for Permits
- Rock Springs Municipal Code § 157.129 Accessory Buildings, Uses and Equipment
- City of Rock Springs Building Ordinances
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Rock Springs building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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