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
Low Estimate
Mid Estimate
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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