Jefferson County runs from the edge of Denver up into the foothills, and a remodeling job at 5,400 feet in Lakewood follows different rules from the same job at 7,000 feet in Evergreen. We work across the whole county and treat those as two different problems, because the building department does too.
Who Issues Your Permit
In unincorporated Jefferson County — Evergreen, Kittredge, Ken Caryl, Conifer, Indian Hills and the canyon corridors — permits come from the Jefferson County Division of Building Safety, 303-271-8260. A kitchen remodel needs one if walls or windows change, a bathroom if walls or utilities move; roofing over two squares, additions and decks all require permits. Fences do not, though a gate across an access needs a miscellaneous permit. Interior remodels that trigger no Planning and Zoning review can be permitted same-day by appointment, Monday through Thursday; everything else runs 10 to 20 business days.
Six cities inside the county run their own departments, and the process changes at the city line:
- Lakewood — 480 S Allison Parkway, 303-987-7500
- Golden — 303-277-8702
- Wheat Ridge — 7500 W 29th Ave, 303-235-2855
- Arvada — 8101 Ralston Rd, 720-898-7620
- Edgewater — 1800 Harlan St, 720-763-3001
- Morrison — 321 CO Hwy 8, 303-697-8749
The Wildfire Code Changed in July 2026
This is the biggest shift in foothills remodeling in years. The Jefferson County Wildfire Resiliency Code, approved in March 2026, took effect on July 1, 2026. Inside the Wildland-Urban Interface overlay — which covers property above 6,400 feet — Class A roofing is required not only on new construction but on exterior alterations: re-roofs, re-siding, deck replacement, additions. Compliant assemblies are tested to ASTM E108 or UL 790.
The code also requires ignition-resistant siding, noncombustible deck framing and surfaces, and vents that meet an ember-resistance standard. Properties inside the overlay need a Defensible Space Permit, and the mitigation has to be inspected by a County-approved forester. The rules sit in Section 39 of the Zoning Resolution and Appendix Z of the building code. The WUI Intermix zone carries the stricter Class 2 standard; Interface, Perimeter and Interior areas are Class 1.
Practically: in Evergreen and the canyons, a re-roof is no longer a like-for-like swap. Below the line — Lakewood, Wheat Ridge, Edgewater, most of Ken Caryl — the overlay generally does not apply, but it is worth confirming by address rather than by town.
Snow Load, Hail and What They Cost
Ground snow load in the county’s mountain areas runs 50 to 80 psf, and anything designed above 70 psf needs stamped drawings from a licensed professional. That is why a foothills addition or covered deck costs more than the identical structure in the metro: heavier framing, mandatory engineering, longer schedule.
Hail is the constant at every elevation. The Front Range hail corridor crosses this county; a June 2026 storm produced 1.75-inch stones across the west metro, and the May 2017 foothills supercell caused $2.3 billion in insured losses. Class 4 impact-resistant shingles typically earn an insurance discount, and in a WUI zone can be specified to satisfy the Class A requirement at the same time.
Asbestos, Lead and What the State Requires Before Demolition
Colorado’s Regulation 8 applies to buildings of any age and is the single most-missed step in a remodel here. For a single-family home, an inspection by a Colorado-certified asbestos building inspector is required once the work will disturb 32 square feet of material, 50 linear feet on pipe, or the equivalent of a 55-gallon drum — thresholds that a kitchen gut or a popcorn-ceiling removal clears without trying. Friable material must be removed by a Colorado-certified General Abatement Contractor before demolition, only an accredited laboratory can confirm a result, and demolition requires notification to CDPHE ten working days before the work starts, whether or not asbestos was found.
Lead runs alongside it. The federal Renovation, Repair and Painting rule requires certified lead-safe work practices on any pre-1978 home once more than a small area of painted surface is disturbed. We build both into the schedule at the start, because discovering them after demolition means a stopped job.
The Communities We Serve
- Lakewood — the county’s largest city, a wide mix of postwar and newer stock.
- Ken Caryl — 33,811 residents, unincorporated, built out 1970s–1990s on hillside lots.
- Evergreen — 9,475 residents at 7,074 ft, early-1970s mountain homes, wells and septic.
- Edgewater — 5,005 residents, median build year 1958, its own permit office.
- Morrison — 396 residents, National Register historic district, Bear Creek floodplain.
- Golden, Wheat Ridge and Arvada.
What We Do Across the County
Kitchen remodeling, bathroom remodeling, home additions, roofing, painting, tile work and fencing. Planning numbers are in our Colorado remodeling price guide; the real number comes after we have seen the property and confirmed which jurisdiction and which code apply to it.
Services We Provide in Jefferson County
Every service below is available throughout Jefferson County, permitted through the authority with jurisdiction over your address.
- Kitchen Remodeling in Jefferson CountyLayouts, cabinets, counters, full gut rebuilds
- Bathroom Remodeling in Jefferson CountyPrimary baths, guest baths, wet-area rebuilds
- Basement Finishing in Jefferson CountyEgress, ceiling height, permits, finished space
- Home Additions in Jefferson CountyBump-outs, second stories, whole-room additions
- Roofing in Jefferson CountyReplacement, storm damage, Class 4 options
- Deck Building in Jefferson CountyComposite and wood decks, rails, structural repair
- Fencing in Jefferson CountyWood, composite and metal fence installation
- Framing in Jefferson CountyStructural framing, walls, load-bearing changes
- Drywall in Jefferson CountyHang, tape, texture, repair and patching
- Tile Work in Jefferson CountyFloors, showers, backsplashes, waterproofing
- Painting in Jefferson CountyInterior and exterior, prep and finish work
- Demolition in Jefferson CountySelective interior demo and full teardowns
Common Questions
Does the county or my city issue my permit?
It depends on the address, not the mailing city. Lakewood, Golden, Wheat Ridge, Arvada, Edgewater and Morrison run their own departments; everything else in the county goes through the Division of Building Safety at 303-271-8260. We confirm the jurisdiction by address before drawing anything, because the submittal package differs.
Does the new wildfire code apply to my re-roof?
If the property sits inside the Wildland-Urban Interface overlay, yes — since July 1, 2026 the Class A roofing requirement applies to exterior alterations, not only new construction. The overlay covers property above 6,400 feet. Below that line it generally does not apply, but the determination is made by address rather than by town name.
How fast can I get a permit for an interior remodel?
In unincorporated Jefferson County, an interior remodel that triggers no Planning and Zoning review can be permitted same-day by appointment, Monday through Thursday. Anything else runs 10 to 20 business days. Complete submittals are what keep it at the short end.
Why does an addition cost more in the foothills?
Ground snow load in the mountain areas runs 50 to 80 psf, and anything above 70 psf requires design by a licensed professional. That means heavier framing, mandatory stamped drawings and a longer schedule than the same addition would need in the metro.