Accessory Dwelling Unit (ADU) Permit in Laramie, Wyoming
VerifiedRequired for construction of an ADU on a single-family residential lot in Laramie. ADUs were formally authorized city-wide in the R1, LR, and RR zoning districts by Enrolled Ordinance No. 1807 (effective April 19, 2022), which created LMC 15.10.030.D.5 (Accessory Dwelling Units) and amended the Chapter 15.28 definition of 'Dwelling, Accessory.' Processed as a standard residential building permit application (no separate ADU-specific permit form), subject to the ADU-specific zoning standards below.
Verified 2026-07-01 · Source
When you need this permit
- Permitted as an accessory use in the R1, LR, and RR (single-family) zoning districts per LMC 15.10.030.D.5
- May be attached to or detached from the principal structure on the property
- All applicable lot and principal-building-type dimensional standards for the district apply (LMC Table 15.12-2)
- Only ONE accessory dwelling unit is permitted per detached one-unit dwelling lot
- Must have a separate access from the principal structure
- Must have separate utility access from the principal structure EXCEPT that the principal use and an approved ADU may share the same utility meter (per LMC 15.10.030.C.5, as amended by Ordinance 1807) — confirm current utility metering requirements with Code Administration, as the ordinance text on shared/separate utility access appears in two places with slightly different framing
- Building footprint of the ADU may be up to 40% of the principal dwelling's building footprint OR 600 square feet, whichever is LESSER
- Maximum ADU size: 1,200 square feet; minimum ADU size: 220 square feet
- ADU height may not exceed the height of the principal structure
- Standard building permit application, plans, and fees apply (same process as residential-building-permit)
Required documents
- Req
Building Permit Application (via Civic Access portal)
ADUs are processed through the standard residential building permit process; no separate ADU permit form
- Req
Site Plan
Property lines, existing structures, proposed ADU location/footprint, setbacks, separate access point
- Req
Construction Drawings
Full plan set demonstrating compliance with LMC 15.10.030.D.5 size/footprint/height standards and Table 15.12-2 dimensional standards
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same schedule as new residential construction) | Per the general Building Permit and Plan Review Fee Schedule — e.g., $23.50 for $1–$500 valuation, scaling per the table | City of Laramie Building Permit and Plan Review Fee Schedule; ADUs have no separate flat fee — charged under the general valuation table, same as new construction |
Review timeline
15–21 business days
Laramie’s published plan-review target
Inspection process
- 1
Foundation
Footings/foundation before concrete pour, below 42-inch frost depth
- 2
Framing
Structural framing before insulation/wall cover
- 3
MEP Rough-In
Mechanical, electrical, plumbing rough-in (separate trade permits required)
- 4
Final
All work complete; required for Certificate of Occupancy
Tips
- Laramie's ADU ordinance (Enrolled Ordinance No. 1807, eff. April 19, 2022) is a single-family-zone-only accommodation — ADUs are permitted in the R1, LR, and RR districts, not city-wide across all zones.
- The ADU footprint cap is the LESSER of 40% of the principal dwelling's footprint or 600 sq ft — for larger primary homes, the 600 sq ft cap will typically be the binding limit.
- Minimum ADU size is 220 sq ft and maximum is 1,200 sq ft — confirm both limits apply regardless of attached/detached configuration.
- Only one ADU is permitted per detached one-unit dwelling lot in any zoning district where ADUs are an allowed use.
- There is no dedicated ADU permit type or fee — an ADU is built under the standard residential building permit process and valuation-based fee schedule.
Frequently asked questions
- Where are ADUs allowed in Laramie?
- ADUs are permitted as an accessory use in the R1, LR, and RR single-family residential zoning districts per LMC 15.10.030.D.5, established by Enrolled Ordinance No. 1807 (effective April 19, 2022).
- What is the maximum size of an ADU in Laramie?
- An ADU's building footprint may not exceed 40% of the principal dwelling's footprint or 600 square feet, whichever is less. The overall maximum ADU size is 1,200 square feet, with a minimum of 220 square feet.
- How many ADUs can I build on my lot in Laramie?
- Only one accessory dwelling unit is permitted per detached one-unit dwelling lot in zoning districts where ADUs are allowed as a permitted use (R1, LR, RR).
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Laramie Code Administration Division (Building Department) — official building department
- Enrolled Ordinance No. 1807 — Amending Title 15.10, 15.12, 15.14 re: R1/LR/RR Dimensional Standards and Accessory Dwelling Units (eff. April 19, 2022)
- City of Laramie Unified Development Code (LMC Title 15) index page
- LMC Chapter 15.10 — Use Regulations
- LMC Chapter 15.12 — Dimensional Standards
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 Laramie building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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