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Make assumptions visible

Understanding the Math Behind a Cash Property Offer

Learn how value, repairs, transaction costs, holding time, uncertainty, and investor return can affect a direct purchase proposal.

12 minute study Advanced Reviewed 2026-07-16

Two-minute explanation

The idea in plain language

A responsible offer explanation should identify the value evidence and the assumptions being deducted. Owners should ask for ranges, comparable evidence, and a written explanation rather than relying on a proprietary score.

Learning objectives

What you should be able to do

  • Distinguish retail value evidence from an investor purchase price.
  • Identify repair, transaction, holding, and risk assumptions.
  • Challenge unsupported or duplicated deductions.
  • Compare a direct offer with a listing net sheet.

Action sequence

First responsible steps

  1. 01Ask what closed-sale evidence supports the value estimate.
  2. 02Request the repair scope and whether the estimate includes a contingency.
  3. 03Ask which closing costs, taxes, liens, or fees are allocated to each party.
  4. 04Compare the written proposal with at least one independent market opinion when possible.

Start with evidence quality

A nearby listing is not the same as a closed sale, and a closed sale of a renovated property is not automatically comparable to an unrenovated property. Property type, location, condition, size, date, and transaction circumstances all matter.

Cash Property Group’s system is designed to withhold automated pricing when verified comparable-sale evidence is inadequate. A model output should not be represented as a verified market fact.

Audit every deduction

Common investor assumptions can include repairs, buying and selling costs, utilities, insurance, taxes, financing, vacancy, resale time, and uncertainty. These assumptions should not be hidden behind a single unexplained discount.

Look for duplication. For example, a broad risk deduction and a second contingency for the same repair uncertainty may count the same risk twice.

A formula is not a fairness certificate

Two investors can use the same evidence and require different returns. The owner’s decision should be based on the actual written terms, alternatives, and priorities—not on whether the proposal uses a familiar formula.

Applied scenario

The unexplained $40,000 repair number

An owner asks for the scope, quantities, and contingency behind a repair deduction. The written explanation reveals that roof replacement was counted both as an individual line and inside a large general contingency.

Takeaway: Transparency improves the decision even when the parties do not agree on the final price.

Knowledge check

Make sure the distinction is clear

Is an active listing a verified closed comparable sale?+

No. It shows an asking price, not a completed transaction.

Why request a repair scope?+

It reveals what work is assumed, supports comparison, and helps identify duplication or unsupported allowances.

Primary and authoritative sources

Continue with the source itself

  1. 1. Property assessment informationCity of St. Louis Assessor
  2. 2. Consumer toolsConsumer Financial Protection Bureau

Learning checkpoint

Did the guide make the next decision clearer?