How to Analyze a House Flip From Your Computer

TLDR
A first-pass flip analysis should quickly answer three questions: the finished sale price, the rehab cost, and the maximum purchase price after financing, holding, and selling costs. If those numbers work, verify the house; if they do not, move on.

Table of Contents

Why Speed and Volume Matter

The best deal can disappear while you are driving across town, waiting on contractors, and working through the numbers.

I bought more than 100 houses in my best year. I never set foot in about half of them before we bought. Some rentals I still own are houses I have never visited.

That was not blind gambling. I had a three-step system and tools that let young acquisition reps make offers I could back. We used the same math over and over until speed came from a process, not a guess.

I called this a three-step system on the live stream, and it is. I also wandered into about every other way I have ever found a deal. Ignore that tangent for now. The screen itself is ARV, rehab, and maximum offer.

There are three basic advantages when you are hunting deals:

  • Be first.
  • Make enough offers to create volume.
  • Bring a skill or cost advantage other buyers do not have.

Fast deal analysis supports the first two. You can put a real offer in front of a seller while slower buyers are still arranging a visit. You also see enough houses to develop intuition about what is normal.

The goal of a computer screen is not to prove you should buy. It is to decide whether the property deserves the next step.

Fast Does Not Mean Final
Make the first pass quickly, then verify the assumptions before you put money on the line.

Step 1: Estimate ARV From the Neighborhood

After-repair value is the price the finished house should sell for. I start with the neighborhood, not one pretty comp an agent emailed me.

Pull sales from the last six to twelve months and look at the price distribution. I want to see where most livable houses sell and where renovated houses sit. Then I normalize that data to price per square foot.

Suppose the subject house is 1,320 square feet. If renovated houses in the same neighborhood are selling around $253 per square foot, the first-pass ARV is about $335,000.

That is the beginning, not the end.

Check the actual comps behind the number:

  • Are they in the same neighborhood and on similar streets?
  • Is the subject close to the normal square footage?
  • Are the homes similar in age and construction?
  • Do the renovated interiors match the finish level you plan to build?
  • Are you mixing one nicer pocket into a weaker area?

Square-foot outliers cause trouble. A 2,200-square-foot house does not always deserve the same price per foot as the neighborhood’s typical 1,500-square-foot house. Buyers do not pay in a perfectly straight line.

I also study construction comps. If the renovated homes use LVP, white shaker cabinets, and a clean B-class finish, that tells me the finish level the market rewards. Building an A-class interior in that neighborhood may spend money buyers will not return.

For a full comp process, use the ARV guide. For the first screen, get a conservative number and note what you still need to confirm.

Step 2: Build a Fast Rehab Budget

Next, classify the flip.

Is it cosmetic, a renovation, or a gut? The class changes the entire budget. A renovation may keep most drywall but replace kitchens, baths, flooring, fixtures, and damaged systems. A gut opens the walls and pulls more of the house into the scope.

I run the major systems first:

  • HVAC.
  • Electrical.
  • Plumbing.
  • Structural work.
  • Roofing.
  • Siding and windows.
  • Drywall and insulation.

Then I add the finish and closeout work:

  • Flooring and paint.
  • Cabinets, counters, and vanities.
  • Tile.
  • Hardware and fixtures.
  • Landscaping.
  • Cleanout and construction cleanup.
  • A handyman budget for the loose ends every trade leaves behind.

Use photos for the first pass. Look for drainage coming back toward the house, foundation movement, cracks near removed walls, old panels, roof wear, peeling siding, and signs that a do-it-yourself owner changed the structure or systems.

Keep a repair allowance even when a system may work. An electrical panel might be fine, but the project can still produce a smaller electrical bill. A roof that looks serviceable may need repair rather than replacement. The budget needs room to move without pretending every category will be zero.

In the live example, the quick rehab estimate came to $68,693. That was based on a 1,320-square-foot renovation with repair allowances for major systems, possible structural work, a roof replacement, normal finishes, and cleanup.

It was still a ballpark.

A Rehab Budget Is a Management Goal
No calculator can see through every wall. The number becomes real through a clear scope, the right contractors, bid control, and project management.

Step 3: Calculate the Maximum Offer

Now put the ARV and rehab into the Flippin Calculator.

A deal has more costs than purchase plus construction. Include:

  • Financing interest.
  • Loan points or origination fees.
  • Buying and closing costs.
  • Property taxes, insurance, utilities, and other holding costs.
  • Selling costs and commissions.
  • The return you require for the cash and risk involved.

In the live example, I used a $335,000 ARV and $68,693 rehab. The model assumed a six-month hold, 12% hard-money interest, four points, about 2% in other closing costs, roughly 7% selling cost, and a 15% target return on cash.

That produced a maximum acquisition price around $170,631. The seller wanted about $200,000.

Those inputs may be conservative. Good. I want the deck stacked in my favor. If the deal only works after lowering every cost and raising the future sale price, it does not work yet.

This is underwriting. It is not a magic answer. Change the assumptions when your real financing, timeline, or selling costs differ. Do not change them just to make the offer you want look good.

When I am sitting with a seller or wholesaler, I show the work. I can explain the $335,000 value with neighborhood sales, the $68,693 rehab with the scope, and the offer with the calculator. The number did not fall out of the sky.

Evidence makes a low offer understandable. It does not require the seller to accept it.

Check the Neighborhood Before You Trust the House

A good-looking property in the wrong neighborhood can still be a bad flip.

I compare three levels:

  1. The United States
  2. The county
  3. The neighborhood

The cleanest setup is a county performing better than the country and a neighborhood performing better than the county. That gives the project more wind at its back.

I usually want a neighborhood median value below the county median. Those B-class and C-class areas often leave more room for a flip. I like houses at least twenty years old because newer owners tend to have less spread and fewer repair-driven opportunities.

Owner occupancy matters too. A healthy share of owner occupants shows that people want to live there, not only rent there. But 90% or more can point to an A-class neighborhood where discounts are harder to find.

No one measure makes the decision. I want the direction, age, value, owner mix, and price distribution to tell a believable story together.

Deal Killers I Screen From the Computer

Some risks are dead on arrival for me, or close to it.

Flood-zone outliers

A flood zone does not mean the same thing in every market. If the whole coastal area expects flood insurance, buyers price it in. If one house is the flood outlier in an otherwise normal neighborhood, the added monthly cost and fear can cut its value.

Easements, zoning, and setbacks

Some investors make money solving these. I usually do not want a long administrative fight with an outcome I cannot control. County maps can reveal an easement, a house built into a setback, or a use that does not fit the zoning.

Big hills and drainage

Steep sites can create access, water, foundation, and resale problems. A hill is not an automatic no everywhere, but it should trigger more work before an offer becomes firm.

Pro-DIY houses

Weird additions, amateur wiring, removed walls, and pieced-together systems can turn a $50,000 rehab into a $100,000 rehab after you open the walls.

Bad neighbors and low ceilings

You can renovate your property. You cannot renovate the neighbor’s yard. A house with lower ceilings than the rest of the neighborhood is also worth less.

No comps

If I cannot find at least three useful comparable sales, the value is not supported. Rural deals can make money, but they do not fit a fast, repeatable system built on statistical resale confidence.

Outliers Break Easy Math
A house can match the neighborhood on a map and still differ in flood risk, size, street, ceiling height, or access. Find the outlier before it becomes your inventory.

What the Computer Cannot Tell You

The three-step screen is for speed. It does not turn the first estimate into a final answer.

After a deal passes the first screen:

  • Confirm the ARV with the actual sold comps.
  • Check the construction comps against the finish you plan to build.
  • Verify easements, zoning, setbacks, and other site-map risks.
  • Recheck the repair allowances that were only ballparks.

The calculator gives you a ballpark and a management goal. Back the number with evidence before you treat it as final.

FAQ

Can I analyze a flip without visiting it?

Yes. The source describes making offers sight unseen with neighborhood data, photos, a rehab budget, and financing assumptions. Confirm the numbers as the deal moves past the first screen.

What is the first number I should calculate?

Start with a conservative ARV supported by the neighborhood. Rehab and maximum offer depend on the exit value. If the ARV is weak, the whole analysis is weak.

Why use price per square foot?

It normalizes neighborhood sales into a fast value estimate. Avoid square-footage outliers because the same price per foot may stop making sense far above or below the normal house.

How accurate does the first rehab estimate need to be?

Accurate enough to reject obvious bad deals and identify the large risks. It is still a ballpark and a project-management goal.

What if the seller wants more than my maximum offer?

Show the math, make the offer you can support, and let the seller decide. Do not erase your profit or contingency to bridge a gap the project cannot carry.