After Repair Value Calculator

Background.

After Repair Value Calculator is a checking tool for people trying to turn adjusted comparable sales into a documented post-renovation value estimate. After-repair value is an opinion of value supported by comparable properties in the condition the subject is expected to reach. That definition leads directly to the displayed relationship: “estimated ARV = average adjusted comparable price × (1 + documented market adjustment) + subject-property adjustment.”

The editable entries are average adjusted comparable sale price, net subject-property adjustment, documented market-condition adjustment. Use values from the document or measurement that governs this after repair value question; the defaults are only the worked fixture below. The main trap is specific to after repair value: do not use an unadjusted neighborhood average; comp selection, gross-living-area differences and appraisal date matter.

Fannie Mae Selling Guide B4-1.3-08, Comparable Sales; selection and adjustment of comparables documents the convention or governing rule used here. The after repair value output is a transparent scenario under those facts: it does not manufacture an unentered market price, professional determination, carrier quote, legal eligibility finding or locally adopted code value.

What is after repair value calculator?

After Repair Value is the relationship behind this decision: after-repair value is an opinion of value supported by comparable properties in the condition the subject is expected to reach. On this page it means estimated ARV = average adjusted comparable price × (1 + documented market adjustment) + subject-property adjustment. Do not use an unadjusted neighborhood average; comp selection, gross-living-area differences and appraisal date matter; that is the line between the reported quantity and a broader real estate analysis.

How to use this calculator.

1. 01Confirm that “estimated ARV = average adjusted comparable price × (1 + documented market adjustment) + subject-property adjustment” matches the after repair value convention you need.
2. 02Replace the fixture values for average adjusted comparable sale price, net subject-property adjustment, documented market-condition adjustment with dated values from the governing record.
3. 03Keep all currencies, measurement units and time periods on the same basis before calculating.
4. 04Read estimated after-repair value together with this boundary: Do not use an unadjusted neighborhood average; comp selection, gross-living-area differences and appraisal date matter.

The formula.

The calculation uses estimated ARV = average adjusted comparable price × (1 + documented market adjustment) + subject-property adjustment. In this after repair value model, the entered terms are average adjusted comparable sale price, net subject-property adjustment, documented market-condition adjustment. After-repair value is an opinion of value supported by comparable properties in the condition the subject is expected to reach, which is why the relationship is presented under this name rather than as a universal alternative. Do not use an unadjusted neighborhood average; comp selection, gross-living-area differences and appraisal date matter. Calculations keep full decimal precision through the relationship and round only the returned display values.

A worked example.

Frequently asked questions.

References& sources.

1. [1]Fannie Mae Selling Guide B4-1.3-08, Comparable Sales; selection and adjustment of comparables. Retrieved 2026-08-07. access: open unless marked otherwise.
2. [2]U.S. Federal Housing Finance Agency. House price index. Retrieved 2026-08-07. independence: secondary-check; access: open.
3. [3]National Association of Realtors. Research and statistics. Retrieved 2026-08-07. independence: secondary-check; access: open.
4. [4]U.S. Internal Revenue Service. Publication 551, Basis of Assets. Retrieved 2026-08-07. independence: primary; access: open.
5. [5]Fannie Mae. Single family selling guide. Retrieved 2026-08-07. independence: primary; access: open.