Basement Finishing in Littleton, CO

Littleton basements come in every shape: a low, partial basement under a 1960s ranch, the lower level of a split-level that’s half above grade, or a full unfinished basement in a newer home. Each one calls for a different plan. Gribbons Group Corp is a licensed & insured general contractor and holds City of Littleton contractor license #AEC002126, so we can pull basement finish permits inside Littleton city limits and see the project through final inspection.

Have a basement question? Call (720) 223-9003 or request a free estimate.

First Question: Are You Inside Littleton City Limits?

Plenty of homes carry a Littleton mailing address without being in the City of Littleton. Some are in unincorporated Jefferson, Arapahoe, or Douglas County, or in neighboring towns, and those homes get permits from a different office. The city itself tells applicants to confirm the property address is within the city limits before applying, and it offers an Address Wizard map for exactly that.

We check this on your address before we quote. If you’re in the Ken Caryl or Columbine area of unincorporated Jefferson County, see our Ken Caryl basement page; if you’re in Highlands Ranch, see Highlands Ranch.

How Littleton Basement Permits Work

Inside city limits, residential remodel permits run through the City of Littleton Permit Center and the city’s eTRAKiT online system, and all documents are submitted electronically. The city’s residential submittal requirements spell out what a basement finish plan needs. The highlights:

• An existing floor plan and a proposed floor plan, each with a north arrow and the project address on every sheet.
• The use, location, and size of every room, plus the finished ceiling height of each room.
• For basement finishes specifically: the location of beams and ductwork and the height from the finished floor to the bottom of those beams and ducts.
• Size, location, and type of all doors and windows, plus stair details including rise and run, handrails, and headroom.
• An electrical layout showing receptacles, switches, lights, smoke alarms, fans, and the electrical service.
• Plumbing and mechanical fixture locations, and Manual J, S, and D calculations if ductwork is being replaced, relocated, or otherwise altered.
• A plan stamped by a structural engineer for any alteration to the foundation or structure, and inspection by that engineer before the city’s final approval.

That last point matters for egress. Cutting a new egress window into a foundation wall is a structural alteration, so plan on an engineer’s stamped design and an engineer’s site verification. We coordinate both. Littleton’s plan reviewers also expect a written narrative with any resubmittal explaining what changed on each sheet, which we handle for you.

Littleton’s Egress Requirements in Plain Terms

The city publishes its egress window and well requirements. Basements and every sleeping room need at least one emergency escape and rescue opening. The opening needs at least 5.7 square feet of net clear area, at least 24 inches of clear height and 20 inches of clear width, and a sill no higher than 44 inches above the finished floor. Below-grade windows need a well with at least 9 square feet of clear area and a 36-inch minimum dimension, and a permanently attached ladder or steps if the well is deeper than 44 inches. If you replace an existing egress window, the new one must fully meet current requirements.

What We Typically Find in Littleton Basements

Littleton’s housing is a real mix: older homes near downtown, large neighborhoods of mid-century ranches and split-levels, and newer construction. A few patterns come up often:

• Older ranches can have lower basement ceilings, ductwork and beams that hang low, older electrical panels, and small windows well above the floor. Ceiling heights and panel capacity drive the design.
• Split-levels and bi-levels have a lower level that’s partly above grade, which often means better natural light and easier egress, but less contiguous space to work with.
• Previously finished basements sometimes need to come back to bare walls because of dated work, water damage, or missing permits. We price demolition and any corrections honestly.

Moisture, Soils, and Radon

Littleton sits on the same Front Range soils as the rest of the south metro, and expansive clay is common. We build partition walls to float where the slab may move, and we look for water issues — grading, downspouts, old cracks, a sump that runs too often — before finishing anything.

Radon is common throughout Colorado, according to the Colorado Department of Public Health and Environment. Test before you finish. If you need mitigation, a licensed radon professional installs it, and we lay out the finished rooms so the system stays accessible.

HOAs and Historic Homes

Many established Littleton neighborhoods have no HOA, while newer subdivisions often do. If yours does, a new egress window well is typically the part of a basement project that needs architectural approval, since it changes the exterior. If your home is a designated historic landmark, we check with the city’s historic preservation staff before planning exterior changes.

Ideas for a Littleton Basement

Common requests include a family room with a media wall or full theater, a guest suite with a three-quarter or full bath, a home office, and a wet bar. For homeowners who want something more specialized, we also plan wine cellars and saunas.

Working with Gribbons Group Corp

We start with a walkthrough, give you a written scope and estimate, then take care of drawings, engineering where needed, the Littleton permit, the build, and every inspection. See our process and our main Denver basement finishing page. Nearby, we also finish basements in Highlands Ranch, Centennial, Lakewood, and Arvada.

See our 12-step basement process, from plans to permit close-out.

Littleton Basement FAQs

I have a Littleton address. Does the City of Littleton issue my permit?

Only if the home is inside city limits. Many Littleton-addressed homes are in unincorporated county areas. The city asks applicants to confirm the address is within city limits, and we verify it before quoting.

Does Littleton require an engineer for an egress window?

The city requires a design stamped by a Colorado-licensed Professional Engineer for any alteration to the foundation system or basement wall, and inspection by the engineer of record before final approval. A new egress cut falls under that.

Why does Littleton want beam and duct heights on the plans?

Beams and ducts set the real ceiling height in a basement. The city’s residential submittal requirements ask for their locations and the height from finished floor to the bottom of them so reviewers can check headroom.

Is Gribbons Group Corp licensed in Littleton?

Yes. We hold City of Littleton contractor license #AEC002126 and are licensed & insured.

Request a Littleton Basement Estimate

Send us a few details about your basement and your address, and we’ll confirm the jurisdiction and set up a walkthrough.

Call (720) 223-9003 or request an estimate online.