Remodeling Cost Calculator
See what hired bathroom and kitchen projects cost where you live, from a smaller update to a full remodel, or a planning range for a room addition. Free, with nothing to sign up for.
Estimated cost: 300 sq ft room addition
$47,000 to $115,000
Based on construction prices in the New York-Newark-Jersey City, NY-NJ area (ZIP 11004, Glen Oaks, NY).
Estimate confidence: Low. Room additions are estimated from the cost per square foot of newly built homes, a similar but not identical kind of work.
Because of this we show the range only, without a typical figure.
What is included: New conditioned floor area built to the standard of a new house (foundation, framing, envelope, systems, finishes). Connecting the new space to your existing house can add to the cost.
- This is an estimate for planning, not a quote or a guaranteed Goodhaus price.
- It is based on public government cost data adjusted for construction prices in your area.
- Your actual cost depends on your home, your choices and your contractor, and quotes may be lower or higher.
- Local data for this area or project type are limited, so the range is wide and should be treated as a rough guide.
- Built on what U.S. households reported paying contractors (Census American Housing Survey 2023)
- Adjusted for construction prices in your area
- A planning estimate, not a quote
How It Works
How This Estimate Works
An estimate, not a quote
The estimate describes published public data, adjusted for the area. It is not a quote and not a Goodhaus price.
Priced for your area
The area adjustment is set for the metro area (or the state outside metros). ZIP codes in the same area get the same adjustment.
Same scope, local prices
The area adjustment reflects construction price levels for the same scope. Local habits in project size or finish are not included. In the survey, spending rises with home value, so owners of high-value homes often spend at the upscale end or above.
From a smaller update to a full remodel
The three levels are parts of what households reported paying contractors to the Census Bureau, from a smaller update to a full remodel, not fixed scope packages.
The full remodel range
Full remodel is the upper quarter of hired projects (75th to 95th percentile). Permitted full remodels in San Francisco fall in this band at that area's price level.
Local figures
Where the survey has enough projects in your metro area, the median that local households reported is shown beside the estimate; it mixes small and full projects.
Room size
Room size is not used because the public data do not record it; an unusually large or small room can fall outside the range.