Investor Education3 min read

How to Calculate Rehab Costs Per Square Foot (The Investor's Method)

Per-square-foot rehab cost estimation is the fastest way to evaluate deals. Here is the investor method for calculating accurate sqft costs.

By Seller's Little Helpers Team · April 13, 2026

Per-square-foot cost is the fastest way to ballpark a rehab. "It's a 1,400 sqft house that needs a moderate rehab. $35-$50 per foot. That's $49,000-$70,000." You can do that math while driving past the property. Here's how to calibrate your numbers.

The Benchmarks

These are starting points. Your market will vary.

Cosmetic Refresh ($15-$25/sqft) Paint, new flooring, updated fixtures, minor repairs. No structural. No system changes. Kitchen gets hardware and countertop at most. Bathrooms get new fixtures.

A 1,400 sqft cosmetic: $21,000-$35,000

Moderate Rehab ($30-$50/sqft) New kitchen, updated bathrooms, new flooring throughout, paint, possible selective system updates (panel upgrade, partial re-pipe). Some drywall work.

A 1,400 sqft moderate: $42,000-$70,000

Full Gut ($60-$100/sqft) Down to studs. New electrical, new plumbing, new HVAC, new drywall, new everything. Possibly structural modifications.

A 1,400 sqft full gut: $84,000-$140,000

Calibrating for Your Market

National benchmarks are useless without local calibration. Here's how to build accurate per-sqft numbers for your area:

  1. Track your actual costs on every completed project
  2. Divide total rehab cost by square footage
  3. Categorize by scope level (cosmetic, moderate, full)
  4. After 3-5 projects, you'll have reliable per-sqft ranges for your market

Until you have your own data, use these benchmarks as a starting point and verify with local contractors and fellow investors.

When Per-Sqft Breaks Down

Per-sqft estimation is great for quick deal analysis but fails when:

  • Kitchens and bathrooms are disproportionate. A 1,000 sqft house with 3 bathrooms costs more per foot than a 1,000 sqft house with 1 bathroom.
  • Basements are included. Unfinished basements inflate sqft without proportional cost.
  • The house has unusual features. A house with a pool, detached garage, or complex roofline breaks the per-sqft model.
  • Systems need replacement. An HVAC replacement is a fixed cost regardless of sqft.

Use per-sqft for initial screening. Use a detailed scope for actual budgeting.

The Two-Step Method

Step 1: Per-sqft estimate for deal screening. "This 1,400 sqft house needs a moderate rehab. Roughly $42K-$70K. Does the deal work at $55K rehab cost?" If yes, move to step 2. If no, pass.

Step 2: Detailed scope for actual budgeting. Book a scope visit. Get line-item detail. Know the real number before committing.

At Seller's Little Helpers, our $150 scope visit takes you from a rough per-sqft estimate to a precise, line-item budget. Use per-sqft to screen. Use our scope to commit.

Book a $150 scope visit at sellerslittlehelpers.com - turn your per-sqft estimate into a real budget. Call (708) 536-6700 or email info@sellerslittlehelpers.com.

Frequently Asked Questions

What is a good per-square-foot cost for a rehab?

Cosmetic: $15-$25/sqft. Moderate: $30-$50/sqft. Full gut: $60-$100/sqft. These are national benchmarks. Calibrate for your market by tracking actual costs on completed projects.

When should I use per-sqft estimation?

For initial deal screening. Quick math to determine if a deal is worth pursuing. For actual budgeting, always get a detailed scope of work with line-item costs.

How do I build accurate per-sqft numbers for my market?

Track actual costs on every project. Divide total cost by square footage. Categorize by scope level. After 3-5 completed projects, your local benchmarks will be reliable.

What is included in the $150 scope visit?

Full walkthrough, line-item scope of work, cost breakdown, timeline, and weekly draw schedule. The precise budget you need after per-sqft screening says the deal is worth pursuing.

Why does per-sqft estimation sometimes fail?

It fails on properties with unusual bathroom counts, unfinished basements, unusual features, or major system needs. These costs don't scale linearly with square footage.

Weekly Labor Draws. No Big Deposits.

Licensed GC built for fix-and-flip investors. Pay $4k/week as work progresses. Demo to punch list, all trades coordinated.

Book a $150 Scope Visit