How a Cash Offer on Your Wisconsin House Is Actually Calculated

Almost every seller asks some version of this question, usually a little apologetically, as though it were rude. It is not rude. You are being handed a number by somebody who profits from that number, and you should want to know exactly how it was reached.

This article walks through the entire calculation on a Wisconsin house — every line, in order, with the parts that are genuinely uncertain flagged as uncertain. By the end you should be able to take any cash offer, from us or from anybody else, and work out whether it was built from real arithmetic or picked out of the air.

Line one: after-repair value

This is the number everything else is subtracted from, so if it is wrong, the whole offer is wrong.

After-repair value, or ARV, is not what your house is worth today. It is what it would sell for on the open market, on your street, once it has been repaired and updated to the standard buyers in your neighbourhood actually expect. It is established the same way an appraiser would do it: recent sales of genuinely comparable houses nearby.

What makes a comparable sale genuinely comparable

• Proximity. Same neighbourhood, ideally within a few streets. In a city like Milwaukee, values can change materially in half a mile.
• Recency. Sales from the last few months carry far more weight than last year's.
• Similar size and layout. A three-bedroom with one bathroom does not compare cleanly to a three-bedroom with two.
• Similar era and construction. A 1915 Foursquare and a 1998 colonial are not the same product even at the same square footage.
• Condition after work. The comparable should be a house in the condition yours would be in after renovation, not before.

Where this line goes wrong

Two ways, and they pull in opposite directions.

An out-of-area buyer running an automated model frequently gets ARV wrong because the model cannot see that your side of the street backs onto a rail line, or that the two "comparable" sales it used were both gut renovations. That produces a number that looks confident and is not.

Meanwhile sellers sometimes anchor on the highest sale in the neighbourhood regardless of whether it resembles their house. Both are the same mistake in different directions: using a comparable that is not comparable.

Line two: the cost of the work

Roof, mechanicals, water damage, kitchen, bathrooms, flooring, paint, windows, and whatever the house is actually hiding behind the plaster. In Wisconsin's older stock this number is almost always larger than a homeowner expects, because homeowners price what they can see and buyers have to price what an inspector will find.

What we actually find in Wisconsin houses

From buying here since 2010, the recurring items:

Why this line separates honest buyers from optimistic ones

A buyer who intends to do the work has to price it accurately, because they are the one writing the cheques. A buyer who intends to assign your contract to somebody else does not — they can be vague, win your agreement with a high number, and then renegotiate weeks later once the person actually paying for the roof finally looks at it.

This is the single most common way Wisconsin sellers get burned by cash buyers, and it is entirely avoidable by asking one question. We cover it in detail in how to tell a real cash buyer from a bad one.

Line three: holding and resale costs

The part sellers almost never think about, because as an owner-occupier you never paid these separately — they were just life.

While we own it

• Property taxes, which keep running regardless of whether anyone lives there.
• Insurance, frequently at a higher vacant-property rate.
• Utilities, including heat kept on through winter so the pipes do not burst. In central and northern Wisconsin this is not optional.
• The cost of the money tied up in the property while the work happens.
• Maintenance — lawn, snow clearance, and securing an empty building.

When we resell

• Agent commission on the resale.
• Wisconsin's real estate transfer fee, $3 per $1,000 of value, customarily the seller's cost.
• Property tax proration to the closing date.
• Closing costs at the title company.
• Concessions the eventual buyer negotiates.

Add several months of carrying a house through a Wisconsin winter and this line is meaningful. It is also the line most likely to be underestimated by a buyer who does not operate locally and has never actually paid to heat an empty house in Wausau in January.

Line four: the margin

We are a business and we intend to make money. Anybody who tells you otherwise is managing you rather than informing you.

What is fair to ask is whether the margin is proportionate to the risk being taken. A house needing a roof, a furnace and a foundation opinion carries genuinely more risk than a tidy ranch needing paint — more can go wrong once walls are open, and more of the budget is guesswork. A margin that reflects that is reasonable. A flat percentage applied identically to every property regardless of risk is a sign nobody has thought about your house specifically.

Putting it together on a real house

Take a hypothetical but typical property: a 1920s two-storey in an older Fox Valley neighbourhood, one bathroom, original kitchen, knob-and-tube remnants, a roof at the end of its life, and a basement that takes water in spring.

1. Start with ARV. What do renovated 1920s two-storeys on those streets actually sell for?
2. Subtract the work. Roof, electrical, a second bathroom if the neighbourhood expects one, kitchen, flooring, paint, drainage and a sump system, plus a contingency for what opens up.
3. Subtract holding and resale. Several months of taxes, insurance, utilities, then commission and closing on the way out.
4. Subtract margin proportionate to the fact that a wet basement and hundred-year-old wiring can both surprise you.

What remains is the offer. There is no fifth secret line, and nothing in it that we will not walk you through on your specific property if you ask.

A worked example, with illustrative numbers

The numbers below are illustrative arithmetic, not a market claim — they are round figures chosen to show how the four lines interact. Your property's actual figures will differ. The point is the shape of the calculation, not the amounts.

Take a 1920s two-storey in an older Fox Valley neighbourhood: one bathroom, original kitchen, knob-and-tube remnants, a roof at the end of its life, and a basement that takes water each spring.

Two things fall out of laying it out this way.

First, the work is the swing factor. Two houses on the same street with identical after-repair values can justify very different offers, because one needs a roof and drainage and the other needs paint. Any buyer quoting you a flat percentage of market value has skipped the only line that actually varies.

Second, the contingency line is where experience shows. On a 1920s house, a buyer who has opened a lot of Wisconsin walls carries a larger contingency than one who has not — and the one carrying too small a contingency is the one who comes back later asking to renegotiate.

What we cannot see, and how that affects the number

Honesty about uncertainty is part of a fair offer. There are things no buyer knows at the point of making one:

• What is behind the plaster. Wiring, insulation, and whether previous work was done properly.
• Whether the basement water is drainage or something structural. These have very different costs.
• What the roof deck looks like under the shingles.
• Whether an addition was permitted, and whether it was built to anything.
• What the sewer lateral is doing between the house and the street — a genuine unknown on older Wisconsin property.

A buyer handles that uncertainty one of two ways. They can price a contingency for it up front and hold their number, or they can price optimistically and renegotiate when reality arrives. The first is what we do; the second is the source of most of the complaints Wisconsin sellers have about cash buyers.

Why the number is lower than a retail sale — and when it is not

A cash offer is lower than a perfect retail sale. It is not always lower than a realistic one, and that distinction is where most of the confusion lives.

From a listing price, subtract: the agent's commission, the pre-sale work an agent asks for, the repairs an inspector turns up, the concessions a buyer negotiates, the mortgage payments you make while it sits, and the real possibility that the first deal collapses and you start again several weeks older with a property that now looks stale.

We work that comparison through properly in cash offer vs. listing with an agent.

Sometimes listing still wins comfortably, and when we can see that we say so. In faster markets — much of Dane County, parts of Waukesha and Ozaukee — a well-kept house rewards a proper listing and we will tell you to go and get one.

What legitimately changes an offer after it is made

Very little should, and you are entitled to know in advance what would.

For us: only something genuinely material that nobody could have known — the classic being significant structural or water damage concealed behind finishes. If that happens we come and talk to you about it directly rather than issuing an amendment through a portal, and you are free to walk away.

What should never change it: a routine inspection finding something we should have priced ourselves, a slow market, or the buyer "checking with a partner". Those are renegotiation tactics rather than discoveries.

Five questions to ask any cash buyer in Wisconsin

1. Are you buying this yourself, or assigning the contract? The most useful question there is.
2. Have you seen the property? A number produced without anyone visiting is an opening position, not an offer.
3. Can I see the arithmetic? If the answer is vague, the number is soft.
4. What specifically would change this number after I accept? The answer should be short and specific.
5. Where does the earnest money sit, and what happens if you miss the closing date? Ours sits with a Wisconsin title company — see the On-Time Guarantee.

Ask us all five. Then ask the next buyer the same five and compare the answers, not just the numbers.

Frequently asked questions