Residential Building Permit (New Single-Family / Two-Family / Multi-Family / Townhome) in Lafayette, Colorado

Lafayette requires a residential building permit (new single-family / two-family / multi-family / townhome) for: Plans must comply with the 2021 IRC/IBC as adopted by the 2023 Lafayette Colorado Building Code, effective August 1, 2023; Must meet the City's Design Information: 36-inch minimum frost depth; 30 psf snow load (roof and ground); 105 mph 3-second-gust base wind speed (single-family); Risk Category 1 Vult 120 mph, Category 2 Vult 135 mph, Categories 3/4 Vult 145 mph; New multi-family plans and new commercial building plans must be submitted no larger than 24 x 36 inches; If the parcel falls within a State-mapped wildfire-risk area (128 acres total in Lafayette per the Colorado Wildfire Resiliency Code map), non-combustible building materials are required and a 30-foot defensible-space/fuel-reduction standard applies; All contractors must hold a current City of Lafayette contractor license (obtained/renewed via the MyGov portal) in addition to any required State (DORA) trade license; Projects in the Old Town Neighborhood Overlay District (e.g., additions, duplexes, garages, ADUs, accessory structures) must additionally comply with the Old Town Neighborhood Overlay District Regulations and Dimensional Standards; New Commercial, Commercial Addition, and New Multi-Family projects require Site Plan/Architectural approval and Civil Construction Document approval BEFORE building permit submittal — submitting the permit first will delay the published review estimate; Complete Building Permit Application, submitted as a single PDF with the application as the first page, emailed to buildingpermits@lafayetteco.gov; paper submittals are not accepted. If your project isn't listed, confirm with City of Lafayette Planning & Building Department, Building Division at 303-661-1451 before starting work.

In Lafayette, the published Building Permit Fee — valuation $1.00 to $500.00 is: $30.00. Additional published fees: Building Permit Fee — valuation $501.00 to $2,000.00 — $30.00 for the first $500.00 plus $3.35 for each additional $100.00 or fraction thereof, to and including $2,000.00; Building Permit Fee — valuation $2,001.00 to $25,000.00 — $80.25 for the first $2,000.00 plus $15.40 for each additional $1,000.00 or fraction thereof, to and including $25,000.00; Building Permit Fee — valuation $1,000,001.00 and up — $6,176.10 for the first $1,000,000.00 plus $4.01 for each additional $1,000.00 or fraction thereof; Plan Check Fee — 65% of the Building Permit Fee; City Use Tax — 3.87% of 60% of total value (0.02322 x value); Boulder County Use Tax — 1.335% of 60% of total value (0.00801 x value); Master Plan Review Fee (one- and two-family dwellings and townhomes, per permit) — $750; Affordable Housing Fee (new residential unit) — $1.00 per square foot, including unfinished basement; Building Permit Commitment Deposit — $1,000 per unit. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

The City's own published estimate is 8 to 12 weeks for first comments, then 1 to 2 weeks for each subsequent review cycle. The City labels this an estimate, not a guaranteed turnaround.

You'll need: Building Permit Application; New Residential Building Permit Checklist; Utility Service Application; Construction Drawings. See the required-documents checklist on this page for details on each.

Lafayette requires 4 inspection(s) for a residential building permit (new single-family / two-family / multi-family / townhome), in order: Foundation/Footing, Framing, Rough Electrical / Plumbing / Mechanical, Final Inspection. Schedule each through City of Lafayette Planning & Building Department, Building Division (303-661-1451).

Apply through City of Lafayette Planning & Building Department, Building Division at 1290 S. Public Road, Lafayette, CO 80026. Phone: 303-661-1451, email: buildingpermits@lafayetteco.gov. Office hours: City Hall public access hours Monday-Friday, 8am-5pm; Building staff available via phone/email during regular business hours. Main city line (303) 665-5588; Building Division direct line (303) 661-1451; Planning staff (303) 661-1270.. Official information: https://www.lafayetteco.gov/92/Planning-Building-Department.

Lafayette, Colorado has adopted: 2021 International Building Code (IBC) — adopted with an effective date of August 1, 2023, per the 2023 Lafayette Colorado Building Code. Source: City of Lafayette Building Code & Design Information page, https://www.lafayetteco.gov/361/Building-Code-Design-Information; 2021 International Residential Code (IRC) — adopted with the same August 1, 2023 effective date; includes a local amendment requiring Class 4 Impact Resistant Shingles (effective March 15, 2021) for reroofing. Source: same page as above; 2021 International Existing Building Code (IEBC); 2021 International Fire Code (IFC); 2021 International Energy Conservation Code (IECC) — includes local commercial low-slope roof reflectance/emittance requirements per IECC Section C402.3, Table C402.3; 2021 International Fuel Gas Code (IFGC); 2021 International Mechanical Code (IMC); 2021 International Plumbing Code (IPC); 2021 International Property Maintenance Code (IPMC); 2021 International Swimming Pool and Spa Code (ISPSC); 2023 National Electrical Code (NEC) — the City's live Solar Permit Application Process document states 'All work shall comply with the 2023 National Electric Code without amendments.' (re-grounded 2026-07-16 on a live primary source after the Solar Photovoltaic Plan Review and Inspections webpage that previously carried this quote was removed from the site). Source (PDF): https://www.lafayetteco.gov/DocumentCenter/View/17165/Lafayette-Solar--Permit-Process; 2023 Lafayette Colorado Building Code — the City's consolidated adoption document incorporating the 2021 I-Code package plus local strengthening amendments and the 2023 NEC; effective August 1, 2023. Source (PDF): https://www.lafayetteco.gov/DocumentCenter/View/36791/2023-Lafayette-Colorado-Building-Code-Final; Colorado Wildfire Resiliency Code — adopted statewide in 2025; applies within State-mapped low- or medium-risk wildfire areas in Lafayette (128 acres total: 44 acres of open space on the southeast edge of the city, 84 acres along the west side near Nyland Way and Brittney Lane). Requires non-combustible building materials for new construction in mapped areas and defines defensible-space/fuel-reduction guidelines within 30 feet of structures. Source: City of Lafayette Building Code & Design Information page, https://www.lafayetteco.gov/361/Building-Code-Design-Information. Local amendments apply — see the Lafayette overview page for the full list.

The City of Lafayette Planning & Building Department (Building Division) issues its own building, electrical, mechanical, and plumbing permits for all work within Lafayette city limits — Lafayette is a home-rule city with its own department, separate from Boulder County's unincorporated permitting program.