Interior Remodeling Costs 

Typical costs, values and returns on investment for interior remodeling projects.

Attic Finish Level 1
Convert unfinished attic space w/ pre-existing window to a 12-by-16-foot play room. Add 3-4 recessed can lights and one ceiling fan. Insulate and finish ceiling and walls. Carpet floor. Extend existing HVAC to new space. Retain existing stairs, but add rail and baluster around stairwell.

Attic Finish Level 2
Convert unfinished attic space to a 12-by-28-foot play room. Include a 15-foot shed dormer, four new windows, 2 ceiling fans, and closet space under the eaves. Insulate and finish ceiling and walls. Carpet floor. Add separate 1/2 ton HVAC unit to service new space. Retain existing stairs, but add rail and baluster around stairwell.

Attic Bedroom
In a house with two or three bedrooms, convert unfinished space in the attic to a 15-by-15-foot bedroom and a 5-by-7-foot bath with stand-up shower, single-lever temperature and pressure-balanced shower control, standard white toilet, solid surface vanity counter with integral single sink, mirror w/ with light, and medium quality resilient flooring. Include a 15-foot shed dormer, four new windows, and closet space under the eaves. Insulate and finish ceiling and walls. Carpet floor. Add separate 1/2 ton HVAC unit to service new space. Retain existing stairs, but add rail and baluster around stairwell.

Basement Remodel
Create a 20-by-30-foot entertaining area with wet bar, a 5-by-8-foot full bath, and a 2-by-12-foot auxiliary room. Painted drywall throughout; exterior walls are insulated. Include five six-panel primed hardboard doors. Main room: Fifteen recessed ceiling light fixtures, three surface-mounted light fixtures, and a snap-together laminate flooring system. Bathroom: Toilet, vanity with cultured marble top, resilient vinyl flooring, two-piece fiberglass shower unit, a light/fan combination, and recessed medicine cabinet. Bar area: 10 linear feet of raised-panel oak cabinets with laminate countertops, stainless steel bar sink, under-counter refrigerator, and vinyl floor tile.

*Source: Realtor Magazine Online