Skip to content

Basement Calculators

Free cost calculators for finishing, fixing and financing your basement. Each one uses 2026 contractor pricing, adjusts for where you live, and shows a line-item breakdown so you know what you’re paying for.

Finishing and remodeling
Basement Finishing CostPrice a full basement finish by size, finish level, flooring, bathroom and extras, with DIY savings.Open calculator → Basement Bathroom CostHalf, three-quarter or full bath, including rough-ins, slab cutting, ejector pumps and upflush toilets.Open calculator → Egress Window CostCut or enlarge a window opening, add a well and cover, with a built-in code checklist.Open calculator → Heated Floor CostCompare electric and hydronic radiant heat, installed prices and monthly running costs.Open calculator → Basement Framing CostWood or steel studs, hired out or DIY, with a lumber shopping list and exact stud counts.Open calculator → Drop Ceiling CostTiles, grid, labor and lights for any room, with a complete shopping list of tiles, tees and wall angle.Open calculator → Basement Finishing ChecklistThe 12 steps to finish a basement in the right order, with costs and timelines for each.Open guide →
Water and moisture
Basement Waterproofing CostCompare sealing, interior drainage and exterior waterproofing for your leak.Open calculator → Sump Pump Installation CostReplacement, new installation or battery backup, with the right pump size.Open calculator → Dehumidifier SizeFind the right pint capacity for your basement and what it costs to run.Open calculator →
Foundations and crawl spaces
Foundation Repair CostCracks, bowing walls, settling and sagging floors, with an urgency rating.Open calculator → Crawl Space Encapsulation CostFrom a basic vapor barrier to full encapsulation with a dehumidifier.Open calculator → Crawl Space Cleaning CostDebris, old insulation, rodent and mold cleanup, and a new vapor barrier.Open calculator →
Air quality and health
Radon Mitigation CostEnter your test result to see if you need a system, and what it costs to install and run.Open calculator → Mold Remediation CostPrice mold removal and see when it’s safe to handle yourself.Open calculator →
Money and planning
Basement FinancingCompare HELOC, home equity, personal loan and 0% promo payments.Open calculator → Basement Apartment ROIConversion cost, rental income and how many years it takes to pay for itself.Open calculator →
Free download
Basement Finishing Budget & Project TrackerThe finishing calculator as a fillable spreadsheet: line-by-line estimate, quote comparison, expense log and the 12-step schedule. Works in Excel and Google Sheets. See what’s inside the basement budget spreadsheet.
Download the free spreadsheet

All estimates are for planning only and use national average 2026 pricing. Get written quotes from licensed pros before you start. How we build our estimates.