Free Home Improvement Tool

Renovation Cost Calculator

Estimate your home renovation cost with low, mid, and high ranges. Select rooms, finish level, and get an instant budget — perfect for homeowners, investors, and flippers.

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Renovation Cost Estimator
Low · Mid · High cost ranges by finish level
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Low Estimate
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Mid Estimate
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High Estimate

About This Calculator

The Renovation Cost Calculator helps homeowners, investors, and house flippers estimate the cost of home improvement projects before committing to a budget.

Renovation costs vary widely based on finish level, location, and contractor rates. Budget renovations use stock materials and standard labor — ideal for flips. Mid-range uses better materials and semi-custom finishes. Luxury uses premium materials, custom work, and top-tier contractors.

Rule of thumb: always add a 10–20% contingency buffer to your renovation budget. Experienced investors use 15% — unexpected issues in walls, plumbing, or electrical are nearly universal in older homes.

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Frequently Asked Questions

How accurate are renovation cost estimates?▼
These estimates provide ballpark ranges based on national averages. Actual costs depend heavily on your local market, contractor rates, material choices, and existing conditions. Always get 3+ contractor quotes before finalizing a budget.
What renovation adds the most value to a home?▼
Kitchen and bathroom renovations consistently offer the best ROI — typically 60–80% return at resale. Fresh paint and curb appeal improvements offer the highest ROI for the cost. Major systems (roof, HVAC) are necessary but don't add visible value.
Should I renovate before selling?▼
Focus on high-ROI updates: paint, landscaping, and kitchen/bath updates. Avoid over-improving for the neighborhood. Consult your realtor — they know what buyers in your market expect and what they'll pay extra for.
What is the 70% rule for house flipping?▼
The 70% rule states: maximum purchase price = (After Repair Value × 70%) - Renovation Cost. Example: $300K ARV × 70% = $210K - $40K reno = $170K max buy price. This ensures adequate margin for profit and unexpected costs.
How long do renovation projects typically take?▼
Cosmetic renovations (paint, flooring): 1–4 weeks. Kitchen remodel: 3–8 weeks. Bathroom: 2–4 weeks. Full gut renovation: 3–6 months. Always budget extra time — contractor availability and material delays are common.
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