What Are Comps? A Guide to Comparable Properties

A comparable property is a recently sold residence that closely resembles the property you are evaluating — the subject property. Analysts use comps to infer market value: if three similar homes within a half-mile sold between $245,000 and $258,000 in the last four months, a subject home with matching characteristics likely falls in that range, adjusted for any meaningful differences.

Comps are not active listings. List price reflects seller ambition; closed sale price reflects what a buyer and seller agreed the property was worth under current market conditions. That distinction matters at every stage of a deal, from initial screening through final appraisal.

In practice, operators maintain a short list of three to five strong comps per subject property. Lenders and appraisers often request the same set when underwriting acquisition loans, construction draws, or disposition refinances. The goal is consistency: the comps you used to justify purchase should still support your projected sale price when you exit.

Comparable analysis is not a one-time exercise. The same property may be evaluated against comps at several distinct points:

• Acquisition screening — Before you make an offer, comps help determine whether the asking price aligns with recent market activity. This is where many investors establish maximum allowable offer (MAO) and projected margin.
• Financing and underwriting — Hard-money lenders, private lenders, and conventional brokers all review comps when sizing loans. On flip projects especially, the lender wants evidence that your after-repair value (ARV) is supported by nearby sales, not by optimistic projections alone.
• Appraisal — When an appraiser visits the subject property, they independently select comps using many of the same criteria you would. Your pre-prepared comp set can inform conversation, but the appraiser’s licensed opinion carries legal weight for loan-to-value calculations.
• Disposition and pricing — At listing time, updated comps confirm whether your original ARV still holds. Market shifts, new inventory, or longer hold periods may require a pricing adjustment before the property goes live.

Treating comps as a living reference — refreshed when you buy, when you draw, and when you sell — reduces surprises at closing and keeps your team aligned on realistic exit numbers.

Not every nearby sale qualifies. Appraisers and experienced operators apply a consistent filter so that each comp genuinely reflects the subject property’s market segment. The most important criteria:

• Same area — Preferably the same neighborhood or subdivision. Cross a major road, school district, or commercial corridor and buyer behavior often changes enough to weaken the comparison.
• Same property type — Compare single-family to single-family, townhouse to townhouse. Mixing property types introduces variables that are difficult to adjust accurately.
• Similar square footage — A meaningful size gap changes both buyer pool and price per square foot. Most analysts stay within roughly 10–15% of the subject’s living area.
• Matching bed and bath count — A three-bed, two-bath comp supports a three-bed, two-bath subject far better than a four-bed home with an in-law suite, even if total square footage is close.
• Recent sale date — Sales within the last six months carry the most weight in stable markets. In rapidly shifting markets, even 90-day-old sales may need adjustment; beyond six months, comps should be used cautiously or replaced.

Secondary factors — lot size, garage, pool, condition at sale, and whether the transaction was arm’s-length — can support or disqualify a comp. Distressed sales, estate settlements, and off-market transfers are typically excluded because they do not reflect open-market demand.

Rarely will a comp match the subject property exactly. Analysts apply adjustments to account for differences: a comp with an extra half-bath may warrant a downward adjustment to the subject; a comp that sold before a kitchen renovation may need an upward adjustment to reflect the subject’s improved condition.

At a high level, the process looks like this:

• Start with each comp’s closed sale price
• Add or subtract value for material differences (condition, features, lot)
• Weight the adjusted values — closer, more recent, and more similar comps carry more influence
• Arrive at a supported value range, not a single precise number

Common mistakes undermine otherwise solid analysis:

• Cherry-picking high sales — Selecting only the top of the market while ignoring lower closed sales produces an ARV lenders will not support.
• Ignoring distance — A comp two miles away in a different price tier can skew results even if bed and bath counts match.
• Using stale data — A six-month-old sale in a rising market understates value; in a cooling market, it overstates it.
• Mixing renovated and as-is sales — On flip projects, compare your finished product to other updated homes, not to distressed sales that required full rehabilitation.

Presenting a defensible comp analysis means showing your work: the raw sales, the adjustments, and the conclusion. That transparency builds credibility with capital partners and reduces rework when the appraiser’s report arrives.

Comp research often lives in browser bookmarks, printed MLS sheets, and email threads — disconnected from the deal record itself. On Tenantivo’s Rehab Detail page, Comparable Properties keeps your comp set with the project from acquisition through sale.

For each rehab, you can maintain up to three comparable property records side by side. Each entry captures the fields lenders and internal reviewers expect:

• Full address and distance from the subject property
• Sold price and date sold
• Bedrooms, bathrooms, and square footage
• Reference URL link to the listing or public record source
• Active status, so outdated comps can be flagged without losing history

Because comps sit on the same record as Figures (planned and actual ARV), Appraisal, and Documents, your team does not rebuild the analysis in a separate spreadsheet every time someone asks for an updated valuation. The subject property, its projected exit, and the sales that support that exit stay in one workspace.

That integration is especially useful when scope changes mid-project. If renovation costs push your timeline or finish level changes, you can refresh comps on the record and immediately see how the new evidence aligns with your Figures tab assumptions.

Comparable properties are more than a box to check on a lender’s term sheet. They are the empirical anchor for every major financial decision on a flip or rehab: what to pay, how much to borrow, what to spend on renovation, and where to list at exit. When that evidence is scattered, teams revert to gut feel — and gut feel is difficult to defend when a draw inspection, appraisal, or buyer negotiation does not go as planned.

Tenantivo was built around the idea that acquisition economics, renovation scope, and disposition strategy are interconnected. Comps belong in that same picture, not in a folder that nobody opens until closing week. Keeping credible, well-documented comparable properties on each Rehab Detail record gives operators, lenders, and partners a shared reference point from the first offer through the final sale.