The Offer You Don't Run Numbers On Is the Offer That Burns You
Every wholesaler has a version of this story. You get a motivated seller on the phone, the property sounds promising, and the pressure to move fast is real. So you throw out a number based on gut instinct or a quick Zillow check — and later you find out you overpaid, your buyers won't touch it, or your margin evaporated somewhere between your MAO and the actual rehab scope.
The fix isn't complicated. It's discipline: run your numbers on every warm lead before you make an offer. Not after. Not during the call. Before.
But running ARV and MAO correctly takes more than a spreadsheet formula. You need reliable comparable sales, a realistic repair buffer, and a margin threshold your buyers will actually move on. This post walks you through the right workflow — and shows you how PropWheel's ARV/MAO Calculator and Deal Score make it repeatable.
What ARV and MAO Actually Mean (And Why Wholesalers Get Them Wrong)
ARV (After Repair Value) is the price the property will sell for once it's fully renovated and listed on the open market. This is not the current as-is value. It's not what Zillow says today. It's what a retail buyer will pay when the work is done.
MAO (Maximum Allowable Offer) is the ceiling on what you can pay for the property and still make the deal work — for you and for your buyer.
The classic formula:
MAO = (ARV × Repair Factor) − Estimated Repairs
For most wholesale deals, the repair factor sits between 65% and 75% of ARV, depending on your market, your buyer pool, and the rehab intensity of the property. A light cosmetic flip in a hot market might support 75%. A full gut renovation in a slower market might need to come in at 60% or lower to attract buyers.
The mistake most wholesalers make is using a single fixed percentage — say, 70% — on every deal regardless of market conditions. That works until it doesn't. Markets shift. Buyer demand fluctuates. Comp confidence varies by neighborhood. A static formula doesn't account for any of that.
For a deeper dive on the formula itself, see how to calculate MAO in wholesaling.
Why Comp Quality Is the Biggest Variable in Your ARV
Your MAO is only as good as your ARV. And your ARV is only as good as your comps.
The most common ARV errors wholesalers make:
- Using comps that are too old (more than 6 months in a shifting market)
- Pulling comps from a different neighborhood or ZIP code
- Including properties with significantly different square footage or bedroom count
- Using active listings instead of closed sales
Good comps are recent, nearby, and comparable in size, condition, and style. In practice, that means you want 3–5 closed sales within 0.5 miles and 90 days, within 20% of the subject property's square footage.
If you can't find clean comps, your ARV confidence drops — and your offer should reflect that uncertainty with a more conservative number.
How PropWheel's ARV/MAO Calculator Works
PropWheel's ARV/MAO Calculator pulls comparable sales data through RentCast, which aggregates MLS and public records data to surface recent closed transactions near your subject property. You're not eyeballing Zillow estimates — you're working from actual sales.
Here's the workflow:
- Enter the property address. The calculator pulls comps automatically from RentCast's database.
- Review the comps. You can see what sold nearby, when, and at what price. Adjust your ARV based on what you see.
- Set your MAO percentage. The calculator is user-adjustable — you're not locked into a fixed 70%. If your buyers in that market want deals at 65%, set it to 65%. If the rehab is light and demand is strong, push to 75%.
- Enter your estimated repair cost. The calculator applies your number to the formula and outputs your MAO.
The result is a defensible, data-backed offer ceiling — not a guess.
One important note on usage: PropWheel's ARV/MAO Calculator includes a monthly lookup allowance. Use it on warm leads you're ready to make offers on — sellers who have responded, qualified, and are genuinely considering selling. Don't burn lookups on cold list scrubbing. Save the calculator for deals that are moving.
If you need help estimating what repairs might cost before you run your ARV, this guide on estimating rehab costs for wholesale deals is a solid starting point.
Where Deal Score Comes In
Running ARV and MAO gives you the margin picture. But margin alone doesn't tell you if the deal will close.
PropWheel's Deal Score gives every deal a 100-point read across four dimensions:
| Component | Points | What It Measures | |---|---|---| | Margin | 50 | Spread between your offer and ARV | | Buyer Demand | 25 | How much activity exists in that zip for your buyer type | | Comp Confidence | 15 | Quality and recency of available comparables | | Rehab Certainty | 10 | How well-defined the repair scope is |
This is where the workflow gets powerful. You can have a deal with a strong margin — say, a $40,000 spread — but if Comp Confidence is low (thin sales history in the area) and Rehab Certainty is low (unknown foundation issues), your Deal Score will reflect the real risk. A deal scoring 78 is very different from one scoring 91, even if both show similar margin on paper.
For a full breakdown of how to interpret these scores and act on them, see how to read a wholesale deal score and know exactly when to pull the trigger.
The Full Workflow: From Warm Lead to Confident Offer
Here's how the pieces connect inside PropWheel when you have a lead that's ready for underwriting:
Step 1: Lead arrives inbound
A seller texts in after receiving a Direct Mail postcard — each postcard has a unique offer code tied to a specific mail campaign, so you know exactly which mailer triggered the response. Alex, PropWheel's inbound AI SMS assistant, picks up the conversation, builds rapport, gathers basic property details, and qualifies the lead before escalating for a call. By the time the seller reaches you, you already have the address, a rough motivation read, and confirmation they're open to an offer.
Step 2: Lead enters Pipeline
The qualified lead moves into your Pipeline kanban board — from New Lead to Contacted, staged for underwriting. You're not working from a spreadsheet or a sticky note. The property, seller details, and conversation history are all in one place.
Step 3: Run the ARV/MAO Calculator
Now that you have a warm, qualified lead, pull up the ARV/MAO Calculator. Enter the address, review the RentCast comps, set your MAO percentage based on your buyer pool's expectations in that market, and enter your repair estimate. You have a data-backed offer ceiling in under two minutes.
Step 4: Check the Deal Score
Review the Deal Score before you get on the phone. If Comp Confidence is low, factor that into your offer — go more conservative. If Buyer Demand is high, you have more confidence you can move the deal quickly once you're under contract. Let the score guide your negotiation posture.
Step 5: Make the offer and generate the contract
If the numbers work, make your offer. When the seller agrees, PropWheel's Contract Generation module produces your PSA in seconds — no downloading templates, no copy-pasting addresses. Once you assign the deal, the Assignment agreement is generated the same way.
Pipeline moves the card from Under Contract → Assigned → Closed. Your Performance Dashboard updates automatically.
What This Workflow Replaces
Without a system like this, the typical wholesaler is juggling:
- A separate tool for comps
- A spreadsheet for MAO calculations
- A note or CRM entry for the lead
- A downloaded contract template
- Manual pipeline tracking
Each handoff between tools is a place where data gets lost, numbers get re-entered wrong, or a lead falls through the cracks. The wholesale real estate tech stack post covers this in more depth — but the short version is that fragmented tools cost you time and deals.
PropWheel's ARV/MAO Calculator and Deal Score aren't standalone features. They're part of a connected workflow that starts with lead scoring and ends with a signed contract — all in one place.
Run Your Numbers. Make Your Offer. Close the Deal.
The wholesalers who make consistent money aren't the ones who move the fastest. They're the ones who underwrite accurately and make offers they can actually close at.
PropWheel gives you the comps, the formula, the deal read, and the contract — so you show up to every seller conversation with a number you can defend and a deal you can move.
If you're ready to stop guessing and start closing, propwheel.com is where to start.