Residential Building Permit (New Construction) in Lyons, Colorado

Lyons requires a residential building permit (new construction) for: Plans must comply with the 2021 IRC/IBC as locally adopted (or 2024 series if operationally in effect at time of application — confirm with SAFEbuilt) and the Town's Climatic and Geographic Design Criteria: 30 psf ground snow load, 140 mph wind speed, Seismic Design Category B, 30-inch frost line depth, ice shield underlayment required; Soils report by a Colorado licensed soils engineer required; Foundation plans stamped by a Colorado licensed engineer; structural plans stamped by a structural engineer; 2021 IECC energy code compliance required (REScheck or an Energy Compliance Report from an energy rating company), plus separate Manual J/D/S HVAC compliance documentation if not already included; Stamped, signed, and sealed plot/site plan with full civil detail: setbacks, easements, grading/drainage (5% slope within first 10 ft of foundation, 2% minimum beyond), erosion-control BMPs, utility locations, and floodplain/wetland/ditch features if present; Fire suppression requirements to be confirmed directly with the Lyons Fire Protection District (a separate special district from the Town Building Department); A large-format (22x34 or 24x36 inch) copy of the approved plan set must be kept on the job site until final inspections pass; Floodplain Development Permit required in addition if any portion of the structure encroaches into the regulatory floodplain (contact Floodplain Administration, 303-823-6622 ext. 47); Wildfire Resiliency Code compliance required for permits applied for on or after July 1, 2026 (Class A roofing, noncombustible gutters, tempered/fire-rated glazing and doors, defensible-space zones). If your project isn't listed, confirm with Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line) before starting work.

In Lyons, the published Building Permit Fee — valuation $0 to $5,000 is: $135. Additional published fees: Building Permit Fee — valuation $5,001 to $25,000 — $135 for the first $5,000 plus $16.00 for each additional $1,000 or fraction thereof, to and including $25,000; Building Permit Fee — valuation $25,001 to $50,000 — $455 for the first $25,000 plus $12.00 for each additional $1,000 or fraction thereof, to and including $50,000; Building Permit Fee — valuation $50,001 to $100,000 — $755 for the first $50,000 plus $9.00 for each additional $1,000 or fraction thereof, to and including $100,000; Building Permit Fee — valuation $100,001 to $500,000 — $1,205 for the first $100,000 plus $7.00 for each additional $1,000 or fraction thereof, to and including $500,000; Building Permit Fee — valuation $500,001 to $1,000,000 — $4,005 for the first $500,000 plus $6.00 for each additional $1,000 or fraction thereof, to and including $1,000,000; Building Permit Fee — valuation $1,000,001 and up — $7,005 for the first $1,000,000 plus $5.00 for each additional $1,000 or fraction thereof; Plan Review Fee — 65% of the Building Permit Fee; Boulder County Open Space & Recycling Tax — (Valuation x 45%) x 1.185%; Park Fund Use Tax and General Fund Use Tax — (Valuation x 45%) x 3%; Park Tax (new living space, including basements) — $2.20 per sq ft; St. Vrain Valley Schools Fair Contribution Fee — Single Family — $551 per unit. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Lyons does not publish a plan-review timeline for this permit. Contact Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line) for current turnaround.

You'll need: Building Permit Application; Submittal Requirements for New Detached Residential Structures (checklist); 2021 IECC Energy Code Compliance. Depending on your project, Lyons may also ask for: Floodplain Development Permit Application. See the required-documents checklist on this page for details on each.

Lyons requires 4 inspection(s) for a residential building permit (new construction), in order: Foundation, Framing, Rough Electrical / Plumbing / Mechanical, Final Inspection. Schedule each through Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) (303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line)).

Apply through Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 432 5th Avenue, Lyons, CO 80540 (PO Box 49). Phone: 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line), email: Lritchie@townoflyons.com (Lisa Ritchie, Planning and Building Director); dtoberman@safebuilt.com (Danielle Toberman, Permit Technician); tmoroney@safebuilt.com (Tim Moroney, Chief Building Official). Office hours: Monday-Thursday 8:00 a.m.-4:30 p.m.; Friday 8:00 a.m.-noon; closed holidays. Town of Lyons main line 303-823-6622.. Official information: https://www.lyonscolorado.com/834/Building-Department.

The Town of Lyons Planning and Building Department, with permit processing, plan review, and inspections contracted to SAFEbuilt. Lyons runs its own building department; Boulder County's unincorporated Building Division does not issue permits within Town limits.

Yes. The Town's Submittal Requirements for New Detached Residential Structures checklist requires a soils report conducted by a Colorado licensed soils engineer as part of the compiled plans package.