Category cost worksheet

Interior remodel cost calculators

Kitchens, bathrooms, additions, basements, counters, and insulation. Compare every current national default, unit cost, range, and primary driver before opening a calculator.

Category cost summary

Lowest default range$538
Highest default range$156,893
Middle typical project$10,475
Available tools35

This span compares different project types and default quantities. It is not the cost of completing every project in the category.

What drives cost in this category

  • Room or project size
  • Finish and material tier
  • Layout and structural changes
  • Trade coordination and access
  • Permits, demolition, and disposal
  • Repair method and affected length
  • Settlement or cracking severity
  • Soil, drainage, and access
  • Structural engineering requirements
  • Excavation, permits, and finish repair
  • Foundation type and total movement
  • Number and location of support points
  • Access below the home
  • Temporary shoring and engineering
  • Utility and finish repairs after lifting
  • Beam span and required capacity
  • Wood, engineered wood, or steel specification
  • Shoring and access
  • Post, footing, and connection work
  • Engineering, permits, and finish restoration
  • Opening length and supported loads
  • Replacement beam and post design
  • Mechanical, electrical, or plumbing relocation
  • Temporary shoring and access
  • Engineering, permits, and finish repair
  • Affected floor area and damage
  • Joist, beam, post, or sill scope
  • Moisture and pest conditions
  • Crawl-space height and access
  • Shoring, permits, and cleanup
  • Floor area and wood species
  • Solid or engineered construction
  • Subfloor preparation
  • Layout, borders, and stair work
  • Removal, acclimation, and finishing
  • Floor area and existing finish
  • Board damage and repairs
  • Dust-control method
  • Stain and finish system
  • Room access and cure schedule
  • Floor area and plank quality
  • Subfloor flatness and preparation
  • Floating, glue-down, or rigid-core system
  • Transitions and trim
  • Removal and disposal
  • Floor area and tile format
  • Substrate and underlayment work
  • Pattern and edge cuts
  • Waterproofing requirements
  • Removal, grout, and finish details
  • Floor area and carpet grade
  • Pad specification
  • Room shape, seams, and stairs
  • Subfloor repairs
  • Removal and furniture handling
  • Wall and ceiling surface area
  • Panel thickness and specialty board
  • Ceiling height and access
  • Finish level and corner detail
  • Insulation, demolition, and disposal
  • Painted wall and ceiling area
  • Surface repair and preparation
  • Number of colors and coats
  • Trim, doors, and cabinet scope
  • Access, protection, and occupancy
  • Interior or exterior system
  • Affected perimeter and water source
  • Excavation and access
  • Drainage, membrane, and sump scope
  • Foundation repair and finish restoration
  • Crawl-space floor and wall area
  • Vapor-barrier thickness and sealing
  • Drainage and standing-water correction
  • Insulation and dehumidification
  • Access, debris removal, and repairs
  • Door count and slab or prehung type
  • Door material and hardware
  • Rough-opening and jamb condition
  • Trim, paint, and wall repair
  • Removal and access
  • Converted floor area and intended use
  • Slab, insulation, and moisture work
  • Windows, doors, and code-required egress
  • HVAC, electrical, and plumbing changes
  • Permits and finish level
  • Cabinet length and depth
  • Stock, semi-custom, or custom construction
  • Wood, finish, and hardware
  • Wall conditions and scribing
  • Electrical integration and installation detail
  • Closet wall length and height
  • Reach-in or walk-in layout
  • Laminate, wire, or wood system
  • Drawers, doors, lighting, and accessories
  • Wall preparation and installation
  • Number of flights and geometry
  • Structural framing and opening changes
  • Stringer, tread, and riser materials
  • Guard and handrail requirements
  • Railing length and location
  • Wood, metal, glass, or composite system
  • Guard height and opening requirements
  • Post attachment and substrate condition
  • Stair geometry, finish, and permits
  • Fireplace type and opening size
  • Foundation, hearth, and noncombustible clearances
  • Chimney or venting system
  • Framing, masonry, and finish design
  • Engineering, permits, and access
  • Shower size and bathroom layout
  • Waterproofing and substrate condition
  • Drain location and plumbing changes
  • Tile, surround, glass, and fixtures
  • Accessibility details, permits, and demolition
  • Bathroom size and mobility needs
  • Shower, toilet, vanity, and clearances
  • Wall reinforcement and grab-bar locations
  • Plumbing, electrical, and ventilation changes
  • Permits, waterproofing, and finish level
  • Number, length, and location of bars
  • Wall framing and blocking
  • Tile or surround drilling
  • Rated hardware and attachment method
  • Wall repair and accessibility assessment
  • Straight or curved staircase
  • Number of flights and track length
  • Seat, rail, and power options
  • Landing space and obstructions
  • Electrical work and professional fitting
  • Affected area and material type
  • Moisture source and repair scope
  • Containment and negative-air requirements
  • Removal versus surface cleaning
  • Testing, disposal, and finish restoration
  • Confirmed material and removal area
  • Material type and friability
  • Containment and air-monitoring requirements
  • Licensed labor and jurisdiction rules
  • Disposal, clearance testing, and restoration

Compare interior remodel calculators

National default scenarios from the shared baseline store
CalculatorTypical costPlanning rangeUnit costPrimary cost driver
Spray Foam Insulation Cost$4,221$3,165–$5,698$3 / sq ftRoom or project size
Home Addition Cost$97,449$68,214–$156,893$244 / sq ftRoom or project size
Kitchen Remodel Cost$33,550$23,485–$54,016$33,550 / projectRoom or project size
Bathroom Remodel Cost$16,651$11,656–$26,808$16,651 / projectRoom or project size
Insulation Cost$3,106$2,330–$4,193$2 / sq ftRoom or project size
Countertop Cost$4,015$3,011–$5,421$100 / sq ftRoom or project size
Basement Finishing Cost$47,613$33,329–$76,658$60 / sq ftRoom or project size
Insulation R-Value$1,175$1,175–$1,175$1 / sq ftRoom or project size
Foundation Repair Cost$13,388$8,702–$21,421$335 / linear ftRepair method and affected length
House Leveling Cost$16,863$10,961–$26,981$16,863 / projectFoundation type and total movement
Structural Beam Replacement Cost$12,859$8,358–$20,574$643 / linear ftBeam span and required capacity
Load-Bearing Wall Removal Cost$14,108$9,170–$22,573$1,176 / linear ftOpening length and supported loads
Crawl-Space Structural Repair Cost$18,660$12,129–$29,855$23 / sq ftAffected floor area and damage
Hardwood Flooring Installation Cost$10,582$7,937–$14,286$13 / sq ftFloor area and wood species
Hardwood Floor Refinishing Cost$4,242$3,182–$5,727$5 / sq ftFloor area and existing finish
LVP Flooring Cost$5,796$4,347–$7,825$7 / sq ftFloor area and plank quality
Tile Flooring Cost$4,810$3,607–$6,493$19 / sq ftFloor area and tile format
Carpet Installation Cost$6,015$4,511–$8,121$6 / sq ftFloor area and carpet grade
Drywall Installation Cost$4,116$3,087–$5,557$3 / sq ftWall and ceiling surface area
Interior Painting Cost$3,909$2,932–$5,277$2 / sq ft of surfacePainted wall and ceiling area
Basement Waterproofing Cost$18,090$11,759–$28,944$151 / linear ftInterior or exterior system
Crawl-Space Encapsulation Cost$6,530$4,897–$8,815$7 / sq ftCrawl-space floor and wall area
Interior Door Installation Cost$2,726$2,044–$3,679$681 / doorDoor count and slab or prehung type
Garage Conversion Cost$58,048$37,731–$92,877$129 / sq ftConverted floor area and intended use
Built-In Cabinets Cost$10,475$6,809–$16,760$873 / linear ftCabinet length and depth
Closet System Cost$5,028$3,771–$6,788$419 / linear ftCloset wall length and height
Staircase Replacement Cost$14,008$9,105–$22,413$14,008 / flightNumber of flights and geometry
Railing Installation Cost$4,657$3,493–$6,287$233 / linear ftRailing length and location
Fireplace Installation Cost$11,281$7,333–$18,050$11,281 / fireplaceFireplace type and opening size
Walk-In Shower Cost$10,754$6,990–$17,207$10,754 / showerShower size and bathroom layout
Accessible Bathroom Remodel Cost$25,799$16,769–$41,278$25,799 / bathroomBathroom size and mobility needs
Grab Bar Installation Cost$717$538–$968$239 / grab barNumber, length, and location of bars
Stair Lift Cost$6,526$4,242–$10,442$6,526 / flightStraight or curved staircase
Mold Remediation Cost$3,452$2,244–$5,524$35 / sq ftAffected area and material type
Asbestos Removal Cost$12,853$8,354–$20,564$26 / sq ftConfirmed material and removal area

Interior remodel cost questions

What do interior remodel projects cost?

The current national default scenarios in this category run from $538 to $156,893. The middle modeled typical is $10,475. Each project uses a different quantity and scope, so compare the unit-cost column before using the category span.

How many interior remodel calculators are included?

This hub links to 35 calculators generated from the shared baseline store. 35 publish cost breakdowns; formula-only tools are labeled separately.

Does location change the material cost?

No. ZIP matching changes the labor component only through the available metro or state wage factor. Material escalation remains tied to the published national index series.

Are these contractor quotes?

No. They are deterministic planning estimates. A local proposal should define quantities, materials, labor scope, permits, removal, disposal, and exclusions.