Rehab Cost Estimator

About the Rehab Cost Estimator

Accurate rehab estimates are the foundation of profitable flips. Underestimate by 20% and your projected profit vanishes. This estimator breaks down renovation costs by trade — demolition, HVAC, electrical, plumbing, interior finishes, and exterior work — so you can build a detailed, itemized budget before making an offer.

Each trade category lets you enter your estimated cost based on contractor bids, per-square-foot averages, or line-item estimates. The calculator sums all categories, adds a contingency buffer for the unexpected issues that always arise once walls are opened, and gives you a total rehab budget you can feed into your flip profit analysis.

Experienced flippers know that scope creep is the profit killer. This calculator helps you define your scope clearly upfront, set a realistic contingency (10–20%), and track your budget categories so you can negotiate with contractors from a position of knowledge.

Homebuyers, investors, and real-estate professionals all benefit from precise rehab cost figures when evaluating properties, negotiating deals, or planning long-term investment strategies. Save this calculator and revisit it whenever market conditions or your financial situation changes.

When This Page Helps

Most rehab overruns happen because investors estimate costs in one lump sum rather than by trade. Breaking costs into categories forces you to think through every aspect of the renovation and reduces the chance of missing major items like HVAC replacement or foundation work.

How to Use the Inputs

1. Walk the property and note needed work in each trade category.
2. Get contractor bids or use per-square-foot estimates for each category.
3. Enter the estimated cost for each trade (leave at 0 if not needed).
4. Set a contingency percentage (10–20% recommended).
5. Review the total rehab estimate with contingency included.
6. Use this total in your 70% rule and flip profit calculations.

Example Calculation

Tips & Best Practices

• Always get at least 2–3 contractor bids per trade for accurate pricing.
• Budget 15–20% contingency for older homes (pre-1970) where hidden issues are common.
• Interior finishes (kitchen, bath, flooring) typically account for 40–60% of rehab cost.
• Don't forget permits — they can add $2,000–5,000 depending on scope.
• Track actual costs against estimates on every flip to improve future accuracy.
• Consider a whole-house cost per square foot benchmark: light cosmetic $15–25/sqft, medium $30–50/sqft, full gut $60–100+/sqft.

Building an Accurate Rehab Budget

The key to accurate rehab budgets is breaking the project into discrete trade categories and estimating each one independently. Walking the property with a checklist ensures you don't miss major items. Each room should be assessed for flooring, walls, ceilings, fixtures, and finishes.

Understanding Cost Drivers

Labor is typically 40–60% of rehab costs, with materials making up the rest. Labor costs vary significantly by market — a plumber in San Francisco charges double what one in Memphis charges. Material costs are more uniform but fluctuate with commodity prices. Getting multiple bids helps you calibrate local pricing.

The Contingency Buffer

No rehab goes exactly as planned. Walls hide plumbing leaks, rooflines conceal rotted sheathing, and code requirements add unexpected costs. A 10–20% contingency is not padding — it's a realistic acknowledgment that construction always has surprises. Flippers who skip contingency consistently overrun their budgets.

Frequently Asked Questions

• What is a typical rehab cost per square foot?

  It varies by scope. Light cosmetic rehabs (paint, carpet, fixtures) run $15–25/sqft. Medium rehabs (new kitchen, baths, flooring, some systems) cost $30–50/sqft. Full gut renovations with structural work and new systems are $60–100+/sqft. Location significantly impacts these ranges.

• How much contingency should I budget?

  Budget 10% contingency on newer homes (post-1990) with cosmetic rehabs, 15% on medium-age homes with moderate work, and 20% on older homes (pre-1970) or full gut renovations. These buffers cover surprises like mold, termites, asbestos, or foundation issues.

• Which trades are most commonly underestimated?

  HVAC and electrical are the most underestimated. Many flippers budget for cosmetic work but forget that a 30-year-old furnace or outdated electrical panel needs replacement. Plumbing scope also grows when old galvanized pipes are discovered during demolition.

• Should I include my own labor in the estimate?

  Yes. Even if you're doing some work yourself, value your time. If you save $5,000 by doing demo yourself but spend 40 hours, that's $125/hour. Compare that to your normal earning potential. Also, doing work yourself may void warranties or insurance coverage.

• How do I estimate costs before a contractor walkthrough?

  Use per-square-foot benchmarks for each trade. For example, HVAC replacement is typically $3–7/sqft, electrical updates $2–5/sqft, and plumbing repairs $2–4/sqft. Multiply by total square footage for a rough estimate, then refine with actual bids.

• What interior items cost the most?

  Kitchens and bathrooms are the two most expensive interior categories. A mid-range kitchen remodel runs $15,000–30,000, and bathrooms cost $5,000–15,000 each. Flooring across a whole house can run $5,000–15,000. These three categories often account for over half the total rehab budget.