What is a condo conversion survey in DC, and what does it cost?

What does the survey actually include?

Three documents, and owners usually only know about the first one. The boundary survey locates the lot lines of your square and lot and shows the building on it. The condominium plats take that survey and show the submitted land, the existing improvements, and any easements or encroachments, with every unit outlined. The unit plans are the floor-by-floor drawings that fix each unit’s vertical boundaries, which matters more than it sounds in a house where the basement unit’s ceiling is the upper unit’s floor.

The DC Condominium Act spells out what has to be on the page. Under DC Code §42-1902.14, the plats must show the location and dimensions of the land and improvements, a registered land surveyor must certify them as to accuracy and compliance, and a registered architect or engineer must certify the plans. Both certifications also state that the units shown are substantially complete. That last clause is the one that trips up schedules, and we cover it below.

How much does a condo conversion survey cost in DC?

Plan $3,000 to $6,000 for the private survey and plat work on a typical two-unit RF-1 rowhouse, plus the District’s recording fees, which are small. Three units or a lot with an odd shape push toward the top of that range or past it. Here is how the money splits:

The recording figures come from the Office of the Surveyor fee schedule published by the Department of Buildings. The private fees are what we have paid on our own projects and what owners we advise report, and they move with how clean the lot is. A rowhouse with a shared party wall that sits exactly on the line, a rear addition built square to the alley, and no bay window hanging over a neighbor is cheap to draw. A house that fails any of those is where the hourly extras start.

When should I order the survey?

Order the boundary survey the week you close, and engage the surveyor for the plats during framing, not after the punch list. The boundary survey has no dependency on construction and it is the document that finds the problems you want to know about early: a fence on the wrong side of the line, a rear addition that crosses it, or a neighbor’s stairs on your lot. The plats and plans are different. Because the surveyor and the architect both certify that the units are substantially complete, they can only sign once the walls that define each unit are in. The trick is to have the drawings fully prepared ahead of that date so the certification is a site visit and a signature, not a six week start-from-zero project after you are already paying interest on a finished building.

The sequence that keeps the survey off the critical path looks like this:

1. Boundary survey at closing. Read it for encroachments before you draw the floor plans.
2. Surveyor and architect retained during framing, with the condo documents attorney looped in so unit numbering and percentage interests match across every document.
3. Draft plats and plans prepared while drywall goes up, with each unit’s boundaries drawn from the approved permit set.
4. Substantial completion walk, certifications signed, package filed with the Office of the Surveyor alongside the declaration.
5. Recorded plats attached to the condo documents and the CASD registration. Units can now sell on their own deeds.

Done in that order, the survey line finishes the same month construction does. Done as an afterthought, it is often the single reason a finished building sits unsold for a quarter. The process guide shows where it lands against the TOPA and vacancy exemption tracks.

Is the survey the same thing as a subdivision?

No, and mixing them up costs weeks. A condominium does not divide the land. The lot stays one lot, the building becomes a regime of units plus common elements, and the plats record that regime over the existing lot. A subdivision through the Office of the Surveyor creates new lots, which is what you need for a fee simple split, like two side-by-side houses with their own ground. Some rowhouses sit on what the Office of Tax and Revenue calls 800 series lots, tax lots that were never recorded as record lots, and those need a subdivision filing first to create a record lot the condo plats can reference. If your tax bill shows a lot number in the 800s, ask the surveyor about this on the first call. It adds a filing, a round of signatures from every trustee on your deed of trust, and prepaid taxes through the next period before the condo plats can record.

What goes wrong, and what each problem costs

The survey is cheap. The things it finds are not, which is exactly why you want it early.

• Rear addition over the lot line. Common on alleys where somebody eyeballed the back wall in 1985. Fixes range from a recorded encroachment agreement with the neighbor to cutting the addition back. Budget legal fees in the low thousands, or construction in the tens.
• Party wall not on the line.Older squares have walls that wander a few inches. The plats simply show it and the condo documents address it. Cheap if drawn correctly the first time, expensive if a buyer’s title company finds it first.
• Units not substantially complete at the certification visit. The surveyor cannot sign. You reschedule, pay a second site visit, and lose the filing window. The answer is to book the walk only after the unit-defining walls, doors, and stairs are in.
• Unit boundaries drawn from an old plan. If the architect moved a wall during construction and the plans still show the permit-set location, you are recording amended plans at $195 plus $20 a sheet, and re-signing with the attorney. Match the plans to the as-built walls.
• Percentage interests that disagree with the declaration. The plats and the condo documents must describe the same units with the same numbers. A mismatch stalls at recording. One shared spreadsheet between surveyor and attorney prevents it.

Who can sign a condo survey in DC?

Only a land surveyor registered in the District can certify the plats, and only a registered architect or professional engineer can certify the plans. A contractor cannot, a title company cannot, and a surveyor licensed in Maryland or Virginia but not DC cannot. Ask for the DC registration number before you retain anyone, and ask how many condominium plats they have recorded with the Office of the Surveyor in the last two years. A surveyor who mostly stakes fences will learn the condo format on your dime. This is one of the few lines in the whole stack where paying a little more for someone who does it weekly saves real money.

If you want the rest of the budget around this line, the cost calculator itemizes the 5 percent conversion fee, the condo documents, the engineer letter, and the carrying tail against your own sale numbers. For a basement carve-off, the plans are simpler but the ceiling height question comes first; see the basement condo guide.

Next reads: the process guide for the full filing sequence, the cost calculator for the whole stack, and is your rowhouse a conversion candidate for the five checks to run before you spend on a survey.