70% Rule Real Estate Calculator

Calculate your Maximum Allowable Offer (MAO) for investment properties instantly.

Formula: MAO = (After Repair Value × Rule Percentage) – Estimated Repairs

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

1. 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.
2. Input Repair Costs: Be realistic. Include a 10-15% contingency for surprises behind the walls.
3. Adjust the Percentage: Use 70% for standard flips. Use 65% for high-risk projects and 75-80% for low-risk, fast-turnover markets.
4. Analyze the MAO: This is your "ceiling." Never bid above this number if you want to maintain your projected margins.
5. 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)

Does the 70% rule include closing costs?

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.

Is the 70% rule still valid in 2024?

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.

What is ARV in real estate?

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.

Should I use this for rental properties?

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.

Can I use this for wholesale deals?

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.

What if the repair estimate is wrong?

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.

What is a "buffer" in house flipping?

The buffer is the 30% of ARV not spent on the purchase. It covers commissions, interest, insurance, and your final profit.

Does the rule apply to land?

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.