How to pull comparable sales for a tax deed parcel

Pulling comparable sales for a tax deed parcel is ordinary flip underwriting with one hard difference: you will probably never get inside the house. So you build an after-repair value out of recent, arm's-length sales of similar nearby properties, state the condition you are assuming because you cannot verify it, and carry that uncertainty forward as a confidence level instead of a single confident number.

Start with the parcel facts, not the neighborhood story

Comps are only as good as the subject description you compare against. Before you look at a single sale, write down what the public record says about the parcel: property type, heated square footage, bedroom and bath count, year built, lot size, and whether there is a basement.

Then read the county's official tax-sale notice for that parcel and treat it as the controlling document. It identifies the property and the debt behind the sale, and it is the version you are bidding against, not a third-party listing page. If the notice and a property record disagree, the notice wins and the difference is a question for a Georgia real-estate attorney before the sale, not after it.

Our column-by-column walkthrough of how to read a Georgia tax sale list covers what each field on a published list does and does not promise.

Set the box: radius, recency, and sale type

A comp set is a deliberately drawn box. Three dimensions define it.

• Radius. Start tight and widen only when the tight set is empty. In a dense metro-Atlanta neighborhood a radius well under a mile is a reasonable starting point, and you widen street by street rather than doubling the circle. School attendance lines, a railroad, a highway, or a sharp change in housing stock can make a property four streets away a different market entirely.
• Recency. Use the most recent closed sales you can get, and prefer a shorter window with fewer comps over a longer window with more. An older sale is evidence about an older market, and in underwriting it is a liability dressed up as data.
• Sale type. You want arm's-length retail resales between unrelated parties. Transfers between relatives, deed-in-lieu transfers, estate conveyances, and resales out of a distressed sale all price something other than retail value.

That last point matters more here than in a normal flip. A property resold shortly after a tax sale often prices the risk of the sale, not the finished house. Such a sale is useful evidence about what investors pay, and it belongs in a separate pile from your retail comps. Keep the piles separate and label them.

Match the property, not just the address

Proximity is the cheapest adjustment and the one people over-trust. A sale is a comp when it matches the subject on the things a retail buyer prices.

| Factor | A usable comp | A weak comp | Not a comp | |---|---|---|---| | Property type | Same type and style | Same type, different style | Townhome for a detached house | | Heated area | Within roughly a tenth of the subject | Within roughly a quarter | Twice or half the size | | Year built | Same build era | A decade or two apart | Pre-war against new construction | | Location | Same subdivision or submarket | Adjacent submarket, same stock | Across a major barrier | | Sale type | Arm's-length retail resale | Investor resale, labelled | Family transfer or distressed conveyance |

Three comps that match closely beat ten that merely sit nearby. If you cannot find three close matches, that is a finding about the parcel, and the honest response is a wider value band, not a borrowed comp from a better street.

Adjust for the condition you cannot see

This is where tax deed comps stop resembling retail comps. Your comp set sold in a known condition. Your subject sold in a condition you are inferring from the street.

Plan for that gap explicitly:

• Treat every comp as having sold in retail condition unless you know otherwise, and price the subject as needing work.
• Gather what the exterior will give you: roofline and roof age, siding, windows, foundation and grading, visible utility connections, the yard, and whether the house looks occupied or long empty.
• Use the year built and the square footage as your rehab anchors, which is exactly how our guide to estimating rehab costs brackets a budget by property age and condition.
• Underwrite two cases, not one: a light cosmetic case and a full gut. If the deal only works in the light case, it is a bet on an interior you have not seen.

An interior walk is usually not available to you before the sale, and it does not become available the moment you win. During the 12-month redemption period the tax deed purchaser generally does not have the right to take possession; possession stays with the owner or occupant. Treat "generally" as a real caveat and ask counsel about your specific parcel.

Turn the comps into an after-repair value and a confidence level

Once the box is drawn and the piles are labelled, the arithmetic is deliberately boring.

1. Take only the close matches and sort them by price per heated square foot.
2. Work from the middle of that range rather than the top. The top comp is the best house in the set, and the best house is not the one you are buying.
3. Multiply the rate you chose by the subject square footage to get a retail value in finished condition.
4. Sanity-check that number against the whole-price range of your comps. If it sits outside the range, the rate is wrong or the subject is not comparable.
5. Subtract your rehab bracket, then the legal, closing, carrying, and selling costs, to see what is actually left.

Then attach a confidence level and keep it attached. Confidence is a function of how many comps matched and how closely: several tight comps in one submarket is a narrow band, while three loose comps spread over two submarkets is a wide one. Carry the band into the bid, because a wide band is a smaller maximum bid, not a reason to hope.

BidWise runs that same sequence on every parcel on a covered county's published list and shows its work: after-repair value from comparable sales, minus estimated rehab from square footage and year built, minus legal, closing, carrying, and selling costs, giving a margin that maps to a score from 0 to 100. It is a formula you can audit, not a black box, and each parcel carries calculation notes and a confidence indicator reflecting how much comparable data stood behind the estimate. A score of 75 or higher is what the product calls a strong deal. How to read your BidWise deal score walks through the inputs one at a time.

Carry the number into the bid and into both outcomes

An after-repair value is not a bid. It is the top of a stack you work down from, and the discipline of setting your max bid is what keeps the comps honest on the courthouse steps.

Remember that a Georgia tax sale has two endings, and comps matter differently in each. If the property is redeemed, you receive what you paid at the sale plus a redemption premium of 20% of that amount for the first year or fraction of a year, and 10% for each additional year or fraction, plus certain allowed costs. That premium is flat, not an annual rate, and it does not care what the house is worth. If nobody redeems, you proceed to barment and usually quiet title, and you end up owning a property you have probably never been inside. That second ending is the one your comps are really underwriting.

Georgia has 159 counties, and BidWise analyzes the published tax-sale lists of four of them: DeKalb, Gwinnett, Cobb, and Clayton. The Georgia tax sales by county hub shows each covered county, its next statutory sale date, and how many parcels were analyzed, so you can see whether a parcel you are researching falls inside that coverage before you spend an afternoon pulling comps by hand.

Frequently asked questions

How do you pull comps for a tax deed property you cannot enter?

You build the comp set from the outside in. Describe the subject from the public record and the county's official notice, then pull recent arm's-length retail sales of similar nearby properties. Because the interior is unknown, you price the subject as needing work and underwrite both a light cosmetic case and a full gut, carrying the spread as a confidence band rather than resolving it.

How recent and how close should comps for a tax sale property be?

Prefer a tight box over a full one. Start with a radius well under a mile in a dense metro-Atlanta neighborhood and the most recent closed sales you can get, then widen street by street only when the tight set is empty. Older sales describe an older market, and a comp across a highway, a rail line, or a sharp change in housing stock is usually a different market.

Can you use tax sale or distressed resales as comps?

Keep them in a separate, labelled pile. A resale shortly after a distressed conveyance prices the risk of that sale rather than the finished house, so it is useful evidence about what investors pay and poor evidence of retail value. Your after-repair value should come from arm's-length retail resales between unrelated parties, with distressed sales used only as a reality check on the downside.

What does after-repair value mean on a Georgia tax deed parcel?

It is what the property would sell for at retail once the work is done, estimated from comparable sales rather than from an asking price. On a tax deed parcel it is always an estimate with a condition assumption inside it, so it belongs with a rehab bracket, a cost stack, and a confidence level attached. It sets the ceiling you work down from, never the bid itself.

Georgia tax sales convey a redeemable tax deed, not clear title. Every figure in BidWise is an estimate produced from public records and comparable sales — not an appraisal, and not investment, legal, or tax advice. Confirm every parcel against the county's official notice, and talk to a Georgia real-estate attorney before you bid.