Both statutes say improved
§42-3131.05 defines a vacant building as any real property improved by a building that is not lawfully occupied on a regular or habitual basis. The subject is a property with a building on it. The definition of occupied for a dwelling unit likewise speaks of a residence in improved real property. A lot with grass, a fence and nothing else has no building to be occupied or unoccupied, so it is outside the definition from the first clause.
The tax side matches. §47-813 says Class 3 property is comprised of all improved real property that appears as vacant on the list DOB compiles under §42-3131.16, and Class 4 is comprised of improved real property on the blighted list. Unimproved land is sent elsewhere in the same section: a lot in a residential zone with no building goes to Class 1A, and other unimproved land falls to Class 2. Neither of those is the $5.00 or $10.00 per $100 rate that this site is about. An empty lot can carry its own problems, from weeds and dumping complaints to a different rate than the house next door, but a Class 3 bill on a lot with no building is a classification error to be raised with OTR, not a designation to be appealed at DOB.
What the DOB form means by vacant lot
DOB's online request form for a vacant property inspection asks the requester whether the property is a vacant lot and, if so, for the closest address. That field exists so a neighbor can report an overgrown or trash strewn lot and have it routed to the right enforcement office. It does not put the lot on the vacant building register, because the statute DOB administers for that register needs a building. If you own a lot and a notice arrives that reads like a vacant building designation, answer inside the 15 day window with the plain fact that the property is unimproved, with a dated photograph and the OTR record showing no improvement value, and ask that the entry be withdrawn. The timeline article describes the window and the appeal article covers what happens if DOB does not withdraw it.
A teardown that is already on the register
Now the harder question. A rowhouse has been on the vacant list for two halves, the owner pulls a raze permit, and the building comes down in March. What happens to the designation? The building the designation attached to no longer exists, and after the raze the property is unimproved land, which §47-813 classes as 1A or 2 rather than 3. In our reading the register entry should close with the building and the class should follow at the next half. What does not happen on its own is any of that. DOB does not watch for raze permits, OTR does not reclassify until DOB's list changes, and a property that stays on the list after the building is gone keeps getting billed at Class 3 on an assessment that still includes an improvement value. Owners who raze and walk away find the bill a year later.
So the raze has its own paperwork. Send DOB the raze permit, the final inspection and dated photographs of the cleared lot, and ask that the registration be closed as of the raze date. Then check the next OTR bill for the class and the improvement value, and if either is wrong, raise it as a classification and assessment error. The refund article covers how an already paid Class 3 half comes back once OTR corrects the class. Keep in mind that the halves before the raze stay what they were: a teardown in March does not undo the Class 3 bill for the half that ended before it, and the only tools for those halves are the exemptions and the occupancy evidence the rest of this site covers.
Why razing is usually the wrong answer to a Class 3 bill
Owners float demolition as an exit because the arithmetic looks simple: no building, no Class 3. Four things cut against it.
- The halves already billed do not go away. A teardown ends the exposure going forward and does nothing for the periods behind it.
- A raze permit is its own DOB process, and in a historic district a contributing building is close to impossible to raze at all. The historic district article explains the review and the separate demolition by neglect track.
- The construction exemption already covers a building with a valid permit and visible work for up to 3 tax years, with a half year bridge for a pending application. A raze and rebuild uses the same permit path and the same exemption, so an owner who intends to build has no reason to leave the lot bare between the two.
- The land value does not fall when the house comes down, and the improvement value on a collapsing rowhouse is often small, so the Class 3 bill is mostly land already. A rate change from Class 3 to Class 1A on the same land value is the real saving, and the exemptions get an owner to Class 1 on the same land for far less than a demolition contract.
When a teardown is the right call
There are buildings that should come down: a structure DOB has found unsafe, one the District would otherwise board and lien under §42-3131.01, or one that a buyer will only take as a cleared lot. In those cases the order is to pull the raze permit first, register and claim the construction exemption while the permit is pending so the current half is covered, raze, then close the registration with the permit and photographs the same week, and finally watch the next OTR bill for the class and the improvement value. Done in that order, the property spends no half at Class 3 that the statute did not require.
If a lot of yours with no building has been billed at Class 3, or a building you razed is still on the list, send us the address and the raze date. We read the DOB record and the OTR account at no charge and tell you which halves can be corrected. Correction work is a flat $1,500 per tax period corrected, paid up front, and refunded in full for any period OTR does not correct.