Free rent evidence worksheet
Free rental valuation and market-rent comparables workbook
Turn a small set of dated rental comparables into an inspectable rent range. Record observed rent, size, dollar adjustments, and evidence strength instead of letting one rent-per-square-foot ratio become an unsupported market conclusion.
The short answer
Last updated: July 2026
How do I estimate rental value from comparables?
A free online rental valuation should be treated as a documented rent estimate, not an appraisal. Record several recent, genuinely similar rentals; normalize concessions; adjust material differences; explain each adjustment; and weight stronger evidence more heavily. This workbook calculates adjusted rents, a weighted indication, median, and range without claiming a guaranteed achievable rent.
After the estimate:
Join the waitlistComparable-rent evidence
Adjust the comps without hiding the judgment.
Positive adjustments raise a comparable toward the subject; negative adjustments lower it. Weight zero excludes a row. Retain the date, source, evidence state, and reason outside this browser worksheet.
Comparable 1
Observed rent
$
Square feet
sq ft
Signed adjustment
$
Evidence weight
0-3
Comparable 2
Observed rent
$
Square feet
sq ft
Signed adjustment
$
Evidence weight
0-3
Comparable 3
Observed rent
$
Square feet
sq ft
Signed adjustment
$
Evidence weight
0-3
Comparable 4
Observed rent
$
Square feet
sq ft
Signed adjustment
$
Evidence weight
0-3
Input-driven result
Your inputs
Formula
Result below
Weighted indication
$2,000
3 included comparables
Median adjusted rent
$2,000
Adjusted range
$1,975 - $2,025
$50 wide
Comparable 1, weight 3
$2,000
Comparable 2, weight 2
$2,025
Comparable 3, weight 2
$1,975
Your calculation
3 included adjusted rents with total weight 7 produce $2,000; median is $2,000
The arithmetic does not verify a source, adjustment, weight, asking-versus-signed status, concession, or fair-housing compliance.
Estimate based on your inputs. Not a promise of results.
How it works
How this tool works.
Market rent is not a single listing scraped without context. A useful comparable set records the observation date, source, location, property type, bedrooms, bathrooms, size, condition, utilities, parking, lease term, concessions, and whether the figure is asking, signed, or renewed rent. Differences should remain visible.
The calculator performs only the arithmetic layer. Enter each observed monthly rent and a signed dollar adjustment: positive when the subject property merits more rent than the comparable, negative when it merits less. Apply a weight from one to three based on evidence quality and similarity, then keep written support outside the calculator.
Make the result useful
Make the evidence trail as important as the rent result
Comparable quality begins with the subject definition. Property type, micro-location, bedroom and bathroom count, usable area, condition, included utilities, parking, furnishings, lease length, and effective date can all change relevance. A nearby observation is not automatically comparable, and a visually similar listing can conceal a concession or different utility burden.
Dollar adjustments are judgment inputs, not facts produced by the calculator. Estimate one material difference at a time, keep the sign convention consistent, and record the source or paired evidence that supports it. Avoid precision that the market evidence cannot sustain; a narrow final number does not become reliable merely because the spreadsheet has decimals.
The weighted indication gives more influence to comparables with higher user-entered weights. The median and range provide independent context. If the adjusted range is wide, the set may represent different submarkets or conditions, the adjustments may be weak, or the market may be moving. The correct response can be more research rather than a forced average.
Calculation lens
Adjusted rent = observed rent + signed dollar adjustment. Weighted indicated rent = sum of adjusted rent x evidence weight / sum of weights. Median and range use all included adjusted rents without weighting.
The output is an evidence-organizing rent indication, median, and range. It is not an appraisal, guaranteed achievable rent, tenant-specific pricing decision, legal conclusion, or substitute for current local evidence.
The workbook does not discover listings, verify sources, identify concessions, choose adjustments, forecast demand, assess legality, or determine an appraisal. It uses a small comparable set and user-selected weights. Current local evidence, consistent pricing policy, and fair-housing review remain necessary.
Questions landlords ask
Questions about this tool and its limits.
Built by a landlord who's done every one of these jobs by hand.
Aptoria was built by an owner-operator managing a Brooklyn portfolio — the 11pm calls, the awkward rent texts, the April receipt-pile — not by a software team guessing at the problem.
Keep exploring
More tools for rent & lease.
Market-rent evidence path
Move from a market-rent definition to an auditable comp range
A defensible estimate starts with a frozen subject profile, documented inclusion rules, normalized concessions, supported adjustments, and an explicit uncertainty range.
Definition
Market rent
The estimated rent a comparable unit could command under current market conditions.
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Definition
Rental comparables
How nearby, recent, and sufficiently similar rental evidence supports an estimate.
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Guide
Estimate market rent with comparables
A unit-level inclusion, normalization, range, and review workflow for small landlords.
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Guide
Build a rental comp adjustment grid
Record why each comp differs and express adjustments as supported ranges.
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