Egress Windows in Jefferson County, CO
Last updated
In Jefferson County, cities like Lakewood, Arvada and Golden issue their own egress permits, and unincorporated areas go to Jefferson County Building Safety under the 2024 IRC.
We install egress windows all over Jefferson County: we cut the foundation, install the window and well, and pull the permit. Cities like Lakewood, Arvada, Wheat Ridge, Golden and Westminster have their own building departments; unincorporated addresses (Evergreen, Ken Caryl, Conifer and similar areas) go to Jefferson County Building Safety, which builds to the 2024 IRC and lists egress windows among projects that need a building permit (Jeffco EERO; Inside the Home). Send us your address for a free quote.
Cities, towns and areas we serve in Jefferson County
- Egress windows in Lakewood
- Egress windows in Arvada
- Egress windows in Westminster (Westminster also extends into Adams County)
- Egress windows in Wheat Ridge
- Egress windows in Golden
- Egress windows in Littleton (parts of Littleton are in Jefferson County)
- Egress windows in Ken Caryl (unincorporated)
- Egress windows in Evergreen (unincorporated)
- Morrison, Edgewater & unincorporated Jeffco (also Conifer, Indian Hills)
Unincorporated Jefferson County: permit office and code
- Permit office: Jefferson County Building Safety, 100 Jefferson County Parkway, Suite 3540, Golden, CO 80419; 303-271-8260 (Jeffco EERO).
- Code: the county's egress page quotes the 2024 IRC (section R319). New sleeping rooms in an existing basement need an escape opening; other basement alterations don't (same page).
- Fast lane for window enlargements: they can skip Planning & Zoning and use same-day counter review by appointment, Monday–Thursday (Residential checklist).
- Septic and ADUs: septic properties are limited by their On-Site Wastewater permit, and a basement finish with a kitchen may be reviewed as an ADU (Inside the Home).
- Fees: use the county's Building Safety Fee Estimator. Unincorporated Jefferson County charges no use tax (Fees).
Nearby counties: Denver · Arapahoe County · Adams County · Douglas County
Do you install egress windows in Lakewood, Arvada and Evergreen?
Yes. We cut the foundation, install the window and well, and pull the permit from whichever office covers your address. Send your address and we'll call you back.
Services
Egress windows · Window wells · Covers · Basement egress · Code guide · Permit guide · Cost guide
Frequently asked questions
Who issues egress window permits in Jefferson County, Colorado?
Cities such as Lakewood, Arvada, Wheat Ridge, Golden, Westminster, Morrison and Edgewater issue their own permits. Unincorporated addresses, including Evergreen, Conifer and Ken Caryl, go to Jefferson County Building Safety in Golden.
Does Jefferson County require a permit for an egress window?
Yes. Jefferson County lists egress windows among the renovations that require a building permit in unincorporated areas.
What code does unincorporated Jefferson County use for egress windows?
The 2024 International Residential Code. Emergency escape and rescue openings are covered in section R319, which the county quotes on its egress page.
Do I need an egress window if I finish an existing basement in Jefferson County?
Only for new sleeping rooms. The county says new sleeping rooms in an existing basement need an escape opening, while other basement alterations do not.
Can I get a same-day permit review for an egress window in Jeffco?
For window enlargements, yes. They can skip Planning & Zoning and use same-day counter review by appointment, Monday through Thursday.
Does unincorporated Jefferson County charge use tax on egress window permits?
No. Unincorporated Jefferson County does not charge use tax. Permit fees can be estimated with the county's Building Safety Fee Estimator.