Remodeling Contractor in Boulder County, Colorado

Boulder County is the most jurisdictionally split county we work in. The cities of Boulder, Longmont, Louisville, Lafayette and the Town of Superior each run their own building department with their own review queue and their own code amendments, while everything outside those municipal boundaries is permitted by the county. Before we scope schedule or cost, we confirm which desk your address answers to, because the answer changes the timeline by months.

Permits in Unincorporated Boulder County

Unincorporated permits go through Community Planning & Permitting at the Courthouse Annex, 2045 13th Street, Boulder 80302, reachable at 303-441-3930. The county moved from the 2015 to the 2021 editions of the International Codes for applications received on or after March 31, 2025, and its current amendments took effect July 1, 2026. One practical relief: work limited to interior remodeling does not require a site plan, which removes a survey step from a kitchen or bathroom project. Construction drawings still have to show the work and how it complies with both the county building code amendments and the Boulder County Land Use Code.

County permitting runs slightly faster than the City of Boulder, but “faster” is relative here. A multi-room remodel commonly takes three to four months to get through permitting. That is a planning fact, not an obstacle — it means design decisions have to be locked earlier in Boulder County than in most Denver-area jurisdictions, because a change after submittal costs a review cycle.

The Cities Run Their Own Desks

• Boulder — standard residential plan review runs four to eight weeks, and energy requirements scale with how much of the house you are renovating.
• Longmont — its own Development Services Center; simple permits are often issued over the counter the same day.
• Louisville — still working through Marshall Fire reconstruction alongside ordinary remodel volume.
• Superior — the other municipality hit hardest by the Marshall Fire, with a mostly late-1990s housing stock.
• Lafayette — Old Town work routes through Planning for zoning and architectural review before Building sees it.

The Marshall Fire Is Still Shaping the Market

On December 30, 2021, the Marshall Fire moved through the City of Louisville, the Town of Superior and unincorporated Boulder County, destroying or damaging more than 1,000 homes and more than 30 commercial structures. Years later it still drives three things a homeowner here should understand. First, contractor capacity in the south of the county is tight, because reconstruction competes for the same trades as remodeling. Second, both Louisville and Superior allowed fire survivors to rebuild under previously adopted 2018 standards rather than the newest code, which means two houses on the same street can be governed by different code editions. Third, a large share of the local stock is now either brand new or heavily rebuilt, which changes what a remodel next door actually involves.

Building Conditions Across the County

Boulder County spans the plains at Longmont and the foothills west of Boulder, and the two are different construction problems. On the plains you are dealing with expansive clay soils, hail, and drainage. In the foothills you add steep access, wildfire-interface requirements, rock, and lots where the driveway grade dictates how material reaches the site. Old coal workings run under parts of the south county — the Lafayette, Louisville, Erie, Superior and Marshall area was a working coal district from the late 1880s into the 1930s — which is a due-diligence item on foundation and addition work in specific neighborhoods rather than a general worry.