← Back to BlogMay 202612 minDan White
How to Estimate Rehab Costs for House Flippers
Rehab cost estimation is the skill that separates profitable flippers from investors who break even or lose money. Walk a property wrong and every number downstream is wrong. Here's the systematic approach I've used on hundreds of Northern Virginia deals.
Market Context
Live Market Data
Washington, DC Housing Market
Cool Market
Data through Mar 2026
Median Sale Price
$590,000
+0.8% YoY
Median Days on Market
44 days
lower = faster market
Sale-to-List Ratio
99.7%
buyers' market
Homes Sold
4,457
last reported month
Source: Redfin Data Center. Updated monthly. Data reflects Washington, DC residential sales.
redfin.comWalk the Property in the Right Order
Always assess major systems before cosmetics. A beautiful kitchen estimate is worthless if you missed a $15,000 roof. Walk in this order: exterior first (roof, foundation, siding, windows), then mechanical systems (HVAC, electrical, plumbing), then cosmetics (kitchen, baths, flooring, paint).
Major Systems — 2026 Cost Ranges
- Roof replacement: $9,000–$18,000 for average SFR. Architectural shingles are the standard for flip quality.
- HVAC full replacement: $5,000–$12,000. Gas furnace + AC unit. Budget more in larger homes.
- Electrical panel upgrade: $3,000–$6,000 for 200-amp service. Full rewire adds $8,000–$20,000.
- Plumbing re-pipe: $5,000–$15,000 for full copper or PEX replacement.
- Water heater: $1,200–$2,500 installed. Replace anything over 10 years old on a flip.
- Foundation repair: Minor cracks $500–$3,000. Major issues $15,000–$50,000+.
Cosmetic Renovation Ranges
- Kitchen (mid-grade flip): $20,000–$40,000. New RTA cabinets, quartz counters, stainless appliances, LVP flooring.
- Primary bath: $10,000–$20,000. Full tile, new vanity, frameless shower, fixtures.
- Secondary bath: $6,000–$12,000.
- Flooring (whole house LVP): $7,000–$16,000 installed.
- Interior paint: $4,000–$8,000 for whole house.
- Exterior paint: $5,000–$12,000.
- Landscaping: $1,500–$5,000 for basic curb appeal.
Get a Rehab Estimate Built Into Your Deal Analysis
Tell Freddie the property condition and what needs work — get a scope-based rehab estimate as part of your full free deal analysis.
Estimate My Rehab Free →The Contingency Rule
Add 10% contingency on cosmetic-only projects. Add 15% on heavier rehabs. Add 20%+ on anything with unknown condition behind walls. The contingency isn't pessimism — it's what separates investors who hit their profit targets from investors who wonder what happened.
Dan White is a licensed Virginia real estate agent at Pearson Smith Realty and founder of FreeDealCalc.com. He has been investing in real estate for 20+ years.