Home Improvement Cost Guides for New Hampshire
Real ranges from the Atlas estimator for the projects we do most, with what is included and what changes the price.
These guides use the same estimator as our Instant Ballpark. Each one shows example houses, the range our estimator returns for them, what changes the price and exactly what is included and left out. We publish them because comparing contractors is hard when nobody shows their numbers.
Guides and one example from each
| Project | Example | Atlas ballpark range |
|---|---|---|
| Vinyl siding replacement | Two-story house, about 1,800 sq ft of wall, 18 windows and doors | $17,000 to $20,600 |
| Bathroom remodel | Five-by-eight bathroom, tub replaced with a tiled walk-in shower and glass door | $11,200 to $16,100 |
| Kitchen remodel | Twelve-by-ten kitchen, same layout, semi-custom cabinets, quartz counters | $17,100 to $47,300 |
| Vinyl plank (LVP) flooring | About 400 sq ft over a wood subfloor, old carpet removed | $5,700 to $6,800 |
| Attic air sealing and insulation | About 800 sq ft of attic with some insulation already, hatch access | $2,300 to $3,000 |
| Window replacement | Eight standard-size windows with exterior trim capping | $6,600 to $7,300 |
| Entry door replacement | One insulated steel entry door | $1,100 to $1,800 |
| Deck building | Sixteen-by-twelve deck in pressure-treated lumber | $5,700 to $6,300 |
| Interior painting | About 1,200 sq ft of walls, two coats | $1,000 to $1,900 |
| Drywall and ceiling repair | A ceiling patch of about 16 sq ft after a leak, whole ceiling repainted | $800 to $1,200 |
| Asphalt shingle roof replacement | Two-story colonial, gable roof about 36 by 28 feet at 8-in-12, one chimney, one layer off | $6,200 to $6,600 |
How to read these ranges
A ballpark range is not a quote. It assumes the house is in normal condition and that nothing unexpected is behind the walls. Rotted sheathing, old leaks, wiring problems and town permit fees are priced once we know about them. The written estimate after a site visit is the number we stand behind.
Every range includes the work that lower bids often leave out, such as tear-off and housewrap on siding, waterproofing behind shower tile, and air sealing before attic insulation. Each guide lists those items so you can check other bids against them.
Using these guides with a contractor
Use the included and not-included lists as a checklist when you compare bids. If one bid is much lower, check it against the list: tear-off, housewrap, flashing, waterproofing, lead-safe work on older homes and cleanup are the items most often missing. Ask each contractor how they would handle hidden damage once the work is open, and whether permit fees are included.
Bigger projects
For additions, ADUs and new homes, use the cost planner, which compares planning ranges for real Atlas designs built to code minimum and to the Atlas standard.