Demolition
Demo day is both exciting and nerve-wracking. Your old living room is about to disappear, making way for the new space you have been planning. This is also when hidden problems reveal themselves, so keep your contingency budget accessible and your expectations flexible.
Time Required
2-5 days
Cost
$2,000-$8,000
Difficulty
Professional required
Demolition Sequence
Disconnect all utilities
Electrician disconnects circuits serving the room. Gas lines are capped if removing a fireplace. HVAC vents are sealed. Water lines are shut off if any plumbing exists. This safety step is non-negotiable before any demolition begins.
Remove existing fixtures and trim
Light fixtures, outlet covers, crown molding, baseboards, and any salvageable millwork come out first. If you are keeping any trim pieces for reuse, label them and store carefully. This careful first step prevents damage to items worth saving.
Tear out walls, ceiling, and flooring
Drywall comes down to expose framing. Flooring is pulled up to the subfloor. Ceiling material is removed if changing ceiling treatment. Walls being relocated are opened up. This is the loudest, dustiest phase. Expect 1-3 days of intense demolition noise.
Remove existing fireplace components
If replacing or relocating the fireplace, the existing surround, mantel, firebox, and chimney components are dismantled. Masonry fireplace removal can add $2,000-$5,000 to demo costs. Gas firebox removal is simpler at $500-$1,500.
Debris removal and cleanup
All debris goes into a dumpster on site. A standard 20-yard dumpster costs $400-$800 for a week rental. Major living room demos often fill one dumpster. Your contractor should include daily cleanup and final debris removal in their bid.
Common Hidden Surprises
- Outdated wiring ($1,000-$5,000): Knob-and-tube or aluminum wiring behind walls must be replaced to meet code. This is a common find in pre-1970s homes.
- Water damage ($500-$5,000): Leaks from windows, roofing, or plumbing that were hidden behind finished walls. Damaged framing must be repaired before proceeding.
- Asbestos or lead paint ($1,000-$10,000): Homes built before 1980 may contain asbestos in flooring, ceiling tiles, or insulation. Lead paint in pre-1978 homes requires certified abatement.
- Structural issues ($2,000-$10,000): Sagging beams, inadequate foundation support, or termite damage that was invisible before walls opened up.
Pro Tips
- •Be present on demo day: Walk through after walls are opened so your contractor can show you any discoveries. This is when real-time decisions need to be made about scope changes.
- •Save reusable materials: Vintage brick from an old fireplace, old-growth lumber from original framing, or salvageable hardwood can be repurposed as accent pieces in the new design.
- •Document everything exposed: Once walls are open, photograph all framing, wiring, plumbing, and structural elements. These photos become invaluable reference material for any future work on the home.