The project
A 2008 home in the Heritage neighborhood of Wake Forest with 850 square feet of unfinished walk-out basement — poured concrete walls, a concrete slab floor, exposed joists, stub-outs for a future bathroom, and a single bare bulb on a pull chain. The builder had roughed in plumbing drain and vent stubs when the house was built but never finished the space.
The homeowners wanted a usable lower level: a family room for the kids, a full bathroom, and a kitchenette with a sink, mini-fridge, and microwave. They also wanted a dedicated home office alcove carved out of the larger family room area. The space needed to feel like a real room, not a basement — that meant proper lighting, moisture management, and enough electrical capacity to support the kitchenette appliances and a future projector setup.
The walk-out basement had one existing exterior door but no egress window on the opposite end. Wake County code requires an egress window in any below-grade habitable space where an occupant could be more than 25 feet from an exit. The home office alcove at the far end of the basement was 32 feet from the exterior door. We needed to cut an egress window.
What we did
- Cut and installed an egress window — sawcut the poured concrete wall, installed a 36-by-44-inch vinyl awning window with a metal window well, gravel drainage bed, and a snap-in window well cover. The opening meets the 5.7-square-foot net clear requirement for emergency egress
- Installed a perimeter drainage mat — Delta-FL dimple mat on the entire slab floor to create an air gap between the concrete and the finished floor, directing any future moisture to the existing French drain at the footing
- Framed all walls — 2x4 walls on 16-inch centers, held 1 inch off the concrete with pressure-treated bottom plates and rigid foam between the studs and the concrete wall for thermal break and vapor management
- Insulated — R-15 unfaced batts in the stud cavities, 1-inch rigid XPS behind the framing for continuous insulation, meeting the R-15 minimum for basement walls in Climate Zone 4A
- Built the full bathroom — connected to the existing 3-inch drain stub and 2-inch vent stub the builder had roughed in. Installed a 36-by-36-inch shower with ceramic tile walls, a comfort-height toilet, and a 30-inch vanity with quartz top. The shower pan is a pre-formed acrylic base with a center drain
- Built the kitchenette — 8-foot run of base cabinets with a laminate countertop, undermount stainless sink, plumbed with hot and cold supply from the existing stubs, drained to the existing 2-inch kitchen drain line. Dedicated 20-amp circuit for the microwave, standard outlet for the mini-fridge
- Ran a 100-amp subpanel — fed from the main panel upstairs, supporting all basement circuits: 14 recessed lights across four zones on dimmers, 16 duplex outlets, the kitchenette circuit, the bathroom GFCI circuit, the exhaust fan, and two reserved circuits for future use
- Installed the exhaust fan and bathroom vent — the bathroom fan vents through the band joist to the exterior with insulated flex duct. The kitchenette area has a recirculating range hood above the microwave location
- Drywall and finish — 1/2-inch moisture-resistant drywall throughout, smooth finish, painted with a mildew-resistant primer and two coats of eggshell latex
- Luxury vinyl plank flooring — waterproof LVP over the drainage mat, with matching baseboards throughout
- Built the home office alcove — 10-by-8-foot space framed off from the main family room with a 5-foot cased opening, dedicated lighting circuit, four outlets, and a hardwired Ethernet drop
Trades involved
This project required all three of our licenses:
- GC (NCLBGC #87341): Permitting, egress window cutting and installation, framing, insulation, drywall, trim, cabinet installation, flooring, paint, and overall project coordination
- Electrical (NC #28-LA-9214): 100-amp subpanel, 14 recessed lights on four dimmer circuits, 16 duplex outlets, dedicated kitchenette circuit, GFCI bathroom circuit, exhaust fan wiring, Ethernet drop, and two reserved future circuits
- Plumbing (NC #P1-22847): Bathroom connections (shower drain, toilet flange, vanity supply and drain), kitchenette sink (hot and cold supply, drain), all connected to the builder’s existing rough-in stubs
Three permits were pulled through Wake County: Building, Electrical, and Plumbing. All inspections — framing, rough-in, insulation, and final — passed on the first visit.
Timeline and budget
- Duration: 7 weeks, start to finish — 35 working days
- Budget: On budget — final invoice came in within the written estimate range
- Crew: Three-person crew for weeks 1 through 4 (egress window, framing, rough-ins), two-person crew for weeks 5 through 7 (drywall, finish, flooring)
- Permits: Building, Electrical, Plumbing — 3 permits, 7 inspections, all passed first visit
- Egress window: The concrete cutting took 4 hours. We used a diamond blade wall saw to make clean cuts without cracking the surrounding concrete. The window well was installed the same day and backfilled with washed gravel
The builder’s existing plumbing stubs saved significant time and cost. If those stubs hadn’t been there, we would have needed to trench the slab for the bathroom drain — adding a week and roughly $4,000 to the project.
The result
An 850-square-foot lower level that went from bare concrete to finished living space in seven weeks. The family room seats eight comfortably. The home office alcove gives the homeowner a dedicated workspace with a door she can close. The full bathroom means nobody has to go upstairs. And the kitchenette handles snacks, drinks, and movie nights without a trip to the main kitchen.
The egress window transformed the far end of the basement from a code violation into a legal habitable room — and it lets natural light into what was the darkest corner of the space. The drainage mat and insulation strategy mean the finished walls are protected from moisture intrusion, not just hiding it behind drywall.
The homeowners effectively added a second living area to their home for a fraction of what an addition would cost. The basement was already there — it just needed the right trades, the right permits, and the right plan to turn it into usable space.