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A new house nobody has lived in yet: how DC treats new construction and an unsold spec home under the vacant building statute

The framing went up in the spring, the certificate of occupancy came in the fall, and the house has sat on the market since, staged and spotless, with nobody sleeping in it. Builders are surprised to learn that this house is a vacant building in the District, and that the paperwork that protected it during the build stopped working the day the inspector signed off. This article explains why a brand new house counts as vacant, how the construction exemption carries the build, why the certificate of occupancy is the moment it ends, what the for sale exemption does after that, and the order a builder or a buyer of an unfinished house should follow so no half of a tax year ends up billed at Class 3.

Why a house that was never lived in is still vacant

§42-3131.05 defines a vacant building as real property improved by a building that is not lawfully occupied on a regular or habitual basis by the owner, a tenant, or another person with the owner's permission. Nothing in the definition asks how old the building is or whether anyone ever lived there. A finished house with no resident is improved real property with no lawful occupant, which is the whole test. The eight factors DOB reads from the sidewalk cut the same way: no furnishings beyond staging, a utility account with almost no usage, a lockbox on the door and a for sale sign in the yard. An inspector who walks past a new build in a neighborhood with an active ANC can write it up as easily as a boarded rowhouse.

The consequence is the same too. Under §47-813 a building on the vacant list is Class 3 at $5.00 per $100 of assessed value instead of Class 1 at $0.85. On a new house the assessment is usually the highest number on the block, so the gap is wide. The calculation article works a $500,000 example: about $12,500 for a half year at Class 3 against about $2,125 at Class 1.

The construction exemption during the build

While the house is being built it is a vacant building under construction, and §42-3131.06a exempts it from the Class 3 rate for up to 3 tax years as long as there is a valid building permit and visible work. The construction exemption article covers the application, the half year bridge for a permit that is still pending, and the ways renovators lose the exemption. The exemption is not automatic. The building still has to be registered, the $350 initial registration fee and the $500 renewal still apply, and the exemption has to be claimed on the DOB form and renewed. Builders who never register because the house is obviously a construction site are the ones who get a notice after the fact for halves the exemption would have covered.

Every exempt year also counts against the 5 in 12 cap, which follows the property, not the owner. A lot that spent two years under a previous owner's stalled permit carries those years into your build.

The certificate of occupancy ends the construction exemption

The construction exemption rests on construction. When the final inspection passes and the certificate of occupancy issues, there is no active work and no open permit, so the exemption has nothing to rest on. From that point the house is a finished vacant building, and the only question is which other category of §42-3131.06a covers it. Builders often assume the construction exemption runs to the end of the tax year or the end of the approved period. It does not. The construction article lists the certificate of occupancy first among the five ways the exemption is lost for a reason: it is the one that catches the most owners.

The for sale exemption after the certificate

A finished house that is listed for sale is actively being marketed, which is its own category in §42-3131.06a. For a single family house the listing exemption covers half a tax year from the initial listing. For a multifamily building it can run up to 2 tax years. The listing has to be real: a listing agreement, an MLS record, a sign and showings. A house that is finished but held back from the market while the builder waits for a better season has no listing and no exemption, and a house listed at a price far above the market invites the argument that it is not actually being offered.

The timing trap is the gap between the two exemptions. If the certificate issues in February and the listing starts in June, the four months in between fall under no category, and the half that contains them can be billed at Class 3. The fix is simple to state and hard for a busy builder to do: list the house the week the certificate issues, or file the listing exemption the same week with the agreement attached, and send DOB the change of status inside the 15 day window the timeline article describes.

Renting it instead

A builder who decides to rent the house while the market recovers has a second route. A rental that is actively marketed and properly licensed is also exempt under §42-3131.06a, but the word licensed does the work. A single family house does not need a certificate of occupancy to be rented, but it does need a basic business license with the right endorsement, and the license article explains why an unpaid Class 3 half can block that license through Clean Hands. The clean way through is to apply for the license the day the certificate of occupancy issues, before any Class 3 half is billed, so there is nothing to clear.

Once a tenant moves in the building is occupied, the register entry closes, and no exemption is needed.

Buying an unfinished house from a builder

Buyers who take over a half built house inherit its DOB record. Before closing, ask for the vacant building registration, the exemption approvals and the permit history, and check the register yourself with the vacant list article. Then ask the seller for the OTR account statement, because a Class 3 half already billed is a lien that travels with the lot. The buying article covers the settlement side. After closing, the construction exemption continues only if the permit stays valid and work stays visible, so a buyer who pauses the project to redesign should expect the exemption to pause with it.

The order that keeps every half at Class 1

  1. Register the building with DOB when the permit issues, claim the construction exemption and calendar the renewal.
  2. The week the certificate of occupancy issues, sign a listing agreement or a property management agreement and send DOB the change of status with the paperwork attached.
  3. If renting, file the basic business license application the same week.
  4. When the house sells or a tenant moves in, send DOB the deed or the lease and ask that the registration be closed, then confirm the OTR class on the next bill.

If a new house of yours has already been billed at $5.00 per $100 for a half that the construction or listing exemption should have covered, send us the address and the dates of the permit, the certificate and the listing. 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.

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Send the address and we'll pull your DOB record: current tax class, open violations, registration history, and which exemption you actually qualify for. No fee for the review, and our fee if you engage us is a flat $1,500 per tax period corrected, paid up front and refunded in full if OTR does not correct the period.

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