Home Addition Cost Guide | JMC Home Improvement Specialists

Primary Suite Addition

Cost: $350K - $550K

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Cost: $350K - $550K

Structural walls removed to open space
Foundation and roof extended
Electric, plumbing, HVAC extended
Installing new windows and exterior/interior doors
New pipes, drains, and water connections
Installation of drywall and painting the new walls and ceilings
Trimming, including crown molding
New flooring, whether it’s hardwood, tile, or carpet
Installing a shower, bathtub, vanity, toilet, tile
Quartz or custom granite countertops
Updating siding, trim, or brickwork to match the addition with the existing home
Removal of all debris
Lifetime warranty on workmanship
*Not included: Decorative light fixtures, appliances and permit fees

Full Bathroom Addition

Cost: $200K - $300K

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Cost: $200K - $300K

Structural walls removed to open space
Building or extending the foundation to support the new bathroom
Construct new walls, ceiling, and roof structures
Water supply and drainage lines for the sink, toilet, shower, and/or bathtub
New wiring for outlets, lighting fixtures, and exhaust fan
Extend heating and cooling ducts to the new bathroom
Moisture-resistant drywall and waterproof key areas (shower, bathtub surrounds)
Tile, vinyl, or another moisture-resistant flooring
Add a window for natural light (with privacy considerations) and a door for entry
Install the toilet, sink, bathtub/shower combo, vanity, and faucet
Tiling for the shower walls
Custom cabinets
Update exterior siding, trim, or brickwork
Painting
Removal of all debris
Lifetime warranty on workmanship
*Not included: Decorative light fixtures, appliances and permit fees

Primary Bathroom Addition

Cost: $250K - $400K

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Cost: $250K - $400K

Structural walls removed to open space
Foundation to support the larger, more elaborate space
Walls, ceilings, and roof structures for added space
Extend the HVAC system, potentially adding radiant floor heating, and ensuring top-tier ventilation for moisture control
Install high-end materials like marble, natural stone, or heated tile flooring
Large windows or skylights for natural light
Freestanding soaking tub
Custom tile designs with intricate patterns, natural stone, or large-format tiles
Custom storage solutions, double vanities, and custom cabinetry
Recessed lighting, LED accent lighting, and dimmable controls
Smart features
Adding a steam shower, sauna, whirlpool tub
Matching the siding, trim, or exterior finishes
Painting
Removal of all debris
Lifetime warranty on workmanship
*Not included: Decorative light fixtures, appliances and permit fees

200 Square Foot Room Addition

Cost: $160K - $220K

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Cost: $160K - $220K

Laundry or Mudroom Addition

Cost: $90K - $160K

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Cost: $90K - $160K

Structural walls removed to open space
Building or extending the foundation
Construct new walls, ceiling, and roof structures
Windows and interior and possible exterior doors
Extended electric and HVAC
Dedicated circuits and outlets for possible washer and dryer, as well as lighting and general outlets
New water supply and drainage lines for possible washer, dryer, utility sink, and floor drain
Durable, moisture-resistant flooring such as tile, vinyl, or laminate
Built-in cabinetry, shelves, all-wood lockers, and/or benches
Tile, wood, or natural stone countertops
Trimming, including crown molding
Painting
Match siding, trim, or exterior finishes to blend the laundry room with the existing structure
Removal of all debris
Lifetime warranty on workmanship
*Not included: Decorative light fixtures, appliances and permit fees

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