Basement Remodeling
Basements that live like main floors.
Dry, warm and designed as real living space.
Where every basement begins.
Every basement remodel starts with a custom layout designed around how the space will actually be used. Moisture control, insulation, electrical and plumbing are all addressed before the walls close.
The space is then designed around real use: a wet bar, gym, guest suite, theater or office, drawn in 3D and built by one dedicated crew under a single permit and contract.
What's included
Where the craftsmanship shows.
Protection before perfection
Moisture diagnostics, trusted waterproofing specialist referrals and updated plumbing, for a basement that's dry, safe and comfortable.
Ceiling height strategy
Ductwork rerouted and slim profile mechanicals to reclaim every inch of ceiling height.
Complete living space
Wet bars, gyms, bathrooms, home theaters, offices and bedrooms, all built to code.
Sound and comfort
Sound insulated walls and ceilings, dedicated HVAC zoning and comfortable flooring options.
Timeline
What to expect, week by week.
- 013–4 weeks
Design & selections
Layout planning, egress and mechanical strategy.
- 024–6 weeks
Permitting
County review for engineer floor plans, framing, electrical and plumbing.
- 038–12 weeks
Construction
Framing, systems, insulation, drywall, millwork and finishes.
- 042–4 days
Final detailing & handoff
Inspections closed out, detailing and warranty handoff.
Recent work
Step inside a finished space.
Client reviews
Our clients say it best —
thoughtful design, craftsmanship you can see.
Where we build
Basement Remodeling across Montgomery County and Washington, DC.
Gaithersburg
Because our shop is minutes away, basement builds here stage materials locally and keep dust and traffic out of the rest of the house. A typical scope is a family room, a bar wall, a guest bedroom with proper egress and a full bath, permitted through Montgomery County DPS.
Remodeling in Gaithersburg: neighborhoods, permits and recent workRockville
King Farm and Fallsmead basements are frequently built out as a legal bedroom with egress, a full bath and a family room. Duct runs get rerouted where they cost ceiling height, and plumbing inspection is closed out before the building inspection, which is how Montgomery County sequences it.
Remodeling in Rockville: neighborhoods, permits and recent workBethesda
Bethesda lower levels come with stone foundations, low headroom and mechanical rooms in the wrong place. Every project starts with a diagnostic of the foundation walls and drainage; waterproofing goes to a trusted specialist, and we design and build the finished space around what that work requires.
Remodeling in Bethesda: neighborhoods, permits and recent workChevy Chase
Lower levels in these houses are usually short on height and long on mechanicals. We reroute ductwork, use slim-profile equipment to reclaim inches, and finish the space with sound-insulated walls and dedicated HVAC zoning so it feels like the floors above.
Remodeling in Chevy Chase: neighborhoods, permits and recent workPotomac
Basements on estate lots are usually full builds: a bar, a gym, a guest suite and a full bath. Where a property is on well or septic, required health department review is coordinated as part of permitting through Montgomery County DPS rather than discovered later.
Remodeling in Potomac: neighborhoods, permits and recent workSilver Spring
Finishing a Silver Spring basement is often the largest usable gain in the house: a family room, a legal bedroom with egress and a full bath, permitted and inspected through Montgomery County DPS, with moisture and insulation handled before the walls close.
Remodeling in Silver Spring: neighborhoods, permits and recent workGermantown
Unfinished Germantown basements are frequently the biggest gain available: a family room, a bar, a guest bedroom and a full bath. Permits go through Montgomery County DPS, and where an HOA requires architectural review we prepare and submit that documentation.
Remodeling in Germantown: neighborhoods, permits and recent workNorth Potomac
Many basements here were framed by the builder and never finished. We complete them as real living space with a family room, bar, guest bedroom and full bath, and because we are minutes away in Gaithersburg the project manager stops by often.
Remodeling in North Potomac: neighborhoods, permits and recent workOlney
Multigenerational living drives much of our Olney work: a basement bedroom with proper egress, a full bath, a kitchenette or bar area and a layout that gives a parent or adult child genuine privacy, all permitted through Montgomery County DPS.
Remodeling in Olney: neighborhoods, permits and recent workWashington
Lower levels in Palisades and Georgetown properties come with moisture history and tight headroom. Diagnostics come first, waterproofing goes to a trusted specialist, and the finished space is designed around what that work requires, with access and material staging planned in advance.
Remodeling in Washington: neighborhoods, permits and recent workFAQs
Basement questions, answered.
How long does a luxury basement remodel take?
Active construction typically runs 7 to 11 weeks, depending on design complexity and custom millwork choices. Our team manages the schedule sequentially so trades work efficiently without costly delays.
Do I need permits to finish or remodel a basement in Montgomery County or DC?
Yes, building, electrical, plumbing, and mechanical permits are all required, and plumbing inspection approval is required before any building inspection can pass. We manage the entire permitting process to protect your home equity and avoid resale complications.
How do you handle moisture and indoor air quality in basements?
Every basement starts with a full diagnostic of the foundation walls and drainage to identify problem areas. For waterproofing itself, we connect clients with a trusted specialist, then design and build around what that work requires.
Does AC Remodeling take on partial basement projects?
Yes. You can phase your basement remodel, tackling spaces like a guest suite or gym first. Every phase is designed to blend seamlessly with future work so you never waste previous construction.
Let's begin
Ready to start your basement remodeling?
Every project starts with a short conversation about your space, your timing and your investment range.