70% Rule Real Estate Calculator
Calculate your Maximum Allowable Offer (MAO) for investment properties instantly.
Maximum Allowable Offer (MAO)
Offer Breakdown Visual
What is the 70% Rule Real Estate Calculator?
The 70% rule real estate calculator is a fundamental tool used by house flippers and real estate investors to determine the maximum price they should pay for a distressed property. By using the 70% rule real estate calculator, investors can ensure they leave enough room in the budget for repair costs, holding costs, closing fees, and a healthy profit margin.
Essentially, the rule suggests that an investor should pay no more than 70% of the After Repair Value (ARV) of a property, minus the cost of the repairs needed. While the 70% rule real estate calculator is a "rule of thumb," it serves as a critical first-pass filter when evaluating dozens of potential deals in a competitive market.
Common misconceptions include the idea that this rule is a law of nature. In high-priced markets or areas with very low inventory, investors might use a "75% rule" or even an "80% rule" to stay competitive, though this significantly increases financial risk.
70% Rule Real Estate Calculator Formula and Mathematical Explanation
The mathematics behind the 70% rule real estate calculator is straightforward but powerful. It balances the exit price (ARV) against the entry price and the capital required for renovations.
The Formula:
MAO = (ARV × 0.70) – Repair Costs
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| ARV | After Repair Value (Estimated Resale) | Currency ($) | $100k – $2M+ |
| Rule % | Risk adjustment factor | Percentage (%) | 65% – 85% |
| Repair Costs | Labor, Materials, Permits | Currency ($) | $10k – $150k |
| MAO | Maximum Allowable Offer | Currency ($) | Resulting Value |
Table 1: Variables used in the 70% rule real estate calculator.
Practical Examples (Real-World Use Cases)
Example 1: The Suburban Fixer-Upper
An investor finds a house that could sell for $400,000 once renovated (ARV). The contractor estimates repairs will cost $60,000. Using the 70% rule real estate calculator:
- ARV: $400,000
- 70% of ARV: $280,000
- MAO: $280,000 – $60,000 = $220,000
In this scenario, if the investor buys the home for $220,000, they have a $120,000 "buffer" to cover closing costs, interest on loans, and profit.
Example 2: The High-Demand Urban Condo
In a hot market where properties sell in days, an investor might use a 75% rule. If the ARV is $500,000 and repairs are $30,000:
- ARV: $500,000
- 75% of ARV: $375,000
- MAO: $375,000 – $30,000 = $345,000
The 70% rule real estate calculator helps clarify that while a higher offer might get the deal, the profit margin is thinner.
How to Use This 70% Rule Real Estate Calculator
- Enter the After Repair Value (ARV): Research "comps" (comparable sales) in the immediate area to estimate what the house will sell for once it is in top condition.
- Input Repair Costs: Be realistic. Include a 10-15% contingency for surprises behind the walls.
- Adjust the Percentage: Use 70% for standard flips. Use 65% for high-risk projects and 75-80% for low-risk, fast-turnover markets.
- Analyze the MAO: This is your "ceiling." Never bid above this number if you want to maintain your projected margins.
- Review the Chart: Use our visual breakdown to see how much of your capital is going toward the purchase versus repairs and profit.
Key Factors That Affect 70% Rule Real Estate Calculator Results
While the 70% rule real estate calculator provides a solid baseline, several variables can shift the viability of a deal:
- Financing Costs: If you are using hard money with 12% interest, that "30% buffer" disappears quickly.
- Closing Costs: Buying and selling fees (commissions, title insurance) can eat 8-10% of the total ARV.
- Market Velocity: How fast are homes selling? A house that sits for 6 months incurs massive holding costs (taxes, utilities, insurance).
- Contractor Reliability: If repairs go over budget or over time, the 70% rule real estate calculator's projected profit shrinks.
- Exit Strategy: Are you flipping or doing a BRRRR? The 70% rule is stricter for flips than for long-term rentals.
- Local Property Taxes: High-tax states like New Jersey or Illinois require a tighter rule (e.g., 65%) to stay profitable.
Frequently Asked Questions (FAQ)
Technically, the 30% gap between the offer and the ARV is meant to cover closing costs, holding costs, and profit. However, it's safer to use the 70% rule real estate calculator and then specifically subtract known fixed costs for better accuracy.
In many high-competition markets, finding a 70% deal is difficult. Many investors have moved to a 75% or 80% rule, but they accept lower profit margins and higher risks.
ARV stands for After Repair Value. It is the estimated value of a property after it has been fully renovated and brought to current market standards.
While primarily for flips, the 70% rule real estate calculator is also used by BRRRR investors to ensure they can refinance all their capital out of the deal.
Yes. Wholesalers use the 70% rule real estate calculator to find a price, then subtract their wholesale fee to determine what they should offer the seller.
This is the biggest risk. If repairs double, your profit may disappear. Always add a contingency to your repair input in the 70% rule real estate calculator.
The buffer is the 30% of ARV not spent on the purchase. It covers commissions, interest, insurance, and your final profit.
Generally, no. Land development has different cost structures and risks that the 70% rule real estate calculator isn't designed to handle.
Related Tools and Internal Resources
- Rental Property Calculator – Analyze long-term cash flow and ROI for buy-and-hold investments.
- BRRRR Calculator – Calculate how to Buy, Rehab, Rent, Refinance, and Repeat effectively.
- Mortgage Repayment Calculator – Determine your monthly carrying costs during the renovation phase.
- Cap Rate Calculator – Evaluate the yield on commercial and multi-family real estate assets.
- Hard Money Loan Calculator – Estimate interest and points for short-term renovation financing.
- Real Estate ROI Calculator – View the total return on investment for any real estate deal.