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Accessory Dwelling Unit (ADU) Permit in Laramie, Wyoming

Required 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 2026-07-17 · 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

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Fee schedule

Building Permit Fee — valuation-based (same schedule as new residential construction)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
Per the general Building Permit and Plan Review Fee Schedule — e.g., $23.50 for $1–$500 valuation, scaling per the table

Review timeline

Plan reviewLaramie’s published plan-review target
15–21 business days

How long did your Accessory Dwelling Unit (ADU) Permit permit actually take in Laramie?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Foundation

    Footings/foundation before concrete pour, below 42-inch frost depth

  2. 2

    Framing

    Structural framing before insulation/wall cover

  3. 3

    MEP Rough-In

    Mechanical, electrical, plumbing rough-in (separate trade permits required)

  4. 4

    Final

    All work complete; required for Certificate of Occupancy

See the full Laramie inspection guide — scheduling & re-inspection fees →

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

Laramie requires an accessory dwelling unit (adu) permit for: 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). If your project isn't listed, confirm with City of Laramie Code Administration Division (Building Department) at (307) 721-5271 before starting work.

In Laramie, the published Building Permit Fee — valuation-based (same schedule as new residential construction) is: Per the general Building Permit and Plan Review Fee Schedule — e.g., $23.50 for $1–$500 valuation, scaling per the table. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Laramie's published plan-review target for an accessory dwelling unit (adu) permit is 15–21 business days.

You'll need: Building Permit Application (via Civic Access portal); Site Plan; Construction Drawings. See the required-documents checklist on this page for details on each.

Apply through City of Laramie Code Administration Division (Building Department) at 320 E. Grand Avenue, Laramie, WY 82070 (temporary location while the Historic Carnegie Building at 405 Grand Avenue undergoes renovations; mailing address P.O. Box C, Laramie, WY 82073). Phone: (307) 721-5271, email: codeadmin@cityoflaramie.org. Office hours: Mon–Fri, 9:00 a.m.–3:00 p.m. (per Building Department Staff page, current); older bulletins/forms list Mon–Thu 8 a.m.–4 p.m., Fri 8 a.m.–2 p.m. — confirm current hours by phone. Official information: https://www.cityoflaramie.org/432/Building-Permits-and-Informational-Bulletins.

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).

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.

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 2026-07-17.

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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Accessory Dwelling Unit (ADU) Permit in other cities

Casper, WyomingCheyenne, WyomingEvanston, WyomingGillette, WyomingGreen River, WyomingJackson, WyomingRiverton, WyomingRock Springs, Wyoming

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