The rule: up to 3 tax years, with a valid permit and visible work
The exemptions from vacant building registration and the vacant tax class sit in D.C. Code §42-3131.06a. The active construction or rehabilitation category allows up to 3 tax years for a building with a valid, active building permit and work actually in progress. Both halves of that sentence are tested. A permit with no work behind it is denied. Work with no permit is denied, and it is also a violation, which creates a second problem our article on denied exemptions covers. The exemption is claimed on the Vacant Building Response Form, the same filing our exemption form guide walks through, with the permit number attached.
Three tax years sounds like plenty. It is not, for two reasons. The DC tax year runs October 1 through September 30, and the exemption is counted in tax years and half tax years, not in months from when you started. And the 3 years sit inside a larger cap: a property gets at most 5 total tax years of exemption of any kind in any 12 year period. A building that spent two years on a probate exemption before the renovation began has three years left, total, for everything.
The half year bridge: permit application under review
Renovators in DC know that getting a permit issued can take longer than the demolition. The code has a category for that gap: a building permit application filed and pending with DOB qualifies for up to half a tax year of exemption. It is meant to cover the review period, and it is short on purpose. An owner who files the application, claims the pending permit exemption, and then lets the application sit unanswered for a year has used the half year and then some. The pending permit category is a bridge to the construction category, not a destination.
There is a second bridge for larger projects. Where the project needs approval from the Board of Zoning Adjustment, the Zoning Commission, the Historic Preservation Review Board, or a similar body before a permit can issue, the pending development approval category allows up to 2 tax years. A historic district rowhouse waiting on HPRB for a rear addition is the common case. Claim the category that matches the stage the project is actually in, and refile when the stage changes.
What "work in progress" means to an inspector
DOB checks the exemption from the sidewalk the same way it checks vacancy. Our article on what the inspector looks for describes the visit. For a construction exemption, the inspector wants to see the permit posted, and evidence that the site is active: material deliveries, a dumpster that gets emptied, a crew on site during working hours, inspections being called in and passed on the permit record. A permit that was issued eighteen months ago with no inspections logged since the first rough in is a permit with no work behind it, whatever the owner says about supply delays. The permit record is public, and the inspector reads it before the visit.
Owners doing the work themselves on weekends are at the most risk here. The work may be real, but a building that is quiet on every weekday, with no inspections called in for months, does not look active from the outside or in the record. Call inspections as each phase completes, even if the next phase is a while off. The inspection log is the proof.
Five ways renovators lose the exemption
The permit expires. A DC building permit has a life, and it lapses if work stops or the term runs out. An expired permit ends the exemption on the day it expires, not on the day someone notices. Renew before the expiration, and attach the renewal to a fresh response form.
The registration lapses. The exemption rides on the vacant building registration, and the registration is annual. Our article on late registration renewals covers what a lapse costs. A renovation in its second year with an expired registration is a vacant building with no exemption on record, and it will be billed that way.
The work is finished but nobody moved in. When the certificate of occupancy issues, the construction is over and so is the construction exemption. If the building then sits empty while it is marketed, the exemption has to change category. Actively for sale on a single family house is half a tax year from the initial listing. Multifamily and commercial for sale or rent is up to 2 tax years. The transition from construction to marketing is where a large share of flips pick up a Class 3 half, because the owner thought the exemption was for the building and it was for the activity.
The building is blighted. Blighted buildings do not qualify for most exemptions. A gut renovation with the rear wall open, debris in the yard, and rough boarding can be designated blighted while the permit is active. Our vacant vs blighted article has an example of a fire damaged flip that had to cure the blight conditions before the permit exemption would hold. Keep the site secured and the exterior tidy, because the exemption depends on it.
The cap runs out.Owners who bought a building that had already been vacant under a prior owner inherit the prior owner's exemption history. The 5 years in 12 attach to the property. Ask DOB for the exemption history on the square and lot before you plan a three year renovation on the assumption that three exempt years are available.
The tax side: exemption granted does not mean class corrected
An approved construction exemption updates the DOB record. The Office of Tax and Revenue keeps its own record, and the classification under D.C. Code §47-813 does not always follow the DOB update on its own. Check the tax class on MyTax.DC.gov after the exemption is approved. If a half was already billed at the Class 3 rate, $5.00 per $100 of assessed value, the exemption with its effective date is the evidence that gets OTR to correct the period. Our article on how the tax is calculated shows what one corrected half is worth: on a $500,000 assessment, about $10,375.
A renovation calendar that keeps the exemption
Before the building is 90 days empty, file the response form claiming pending permit if the application is in, or pending development approval if the project is in front of a board. When the permit issues, refile under active construction with the permit number. Renew the registration on its anniversary and attach the current permit status. Call inspections as phases complete. When the certificate of occupancy issues, refile under for sale or for rent the same week the listing goes live, and note the half year limit on a single family house. At every step, check that the OTR class matches the DOB record. That sequence keeps a three year renovation off Class 3 for the whole run, and it fits on one page of a project binder.
If your renovation is already on Class 3, send us the address. We pull the DOB record, the permit record, and the OTR bill for free and tell you which periods can still be corrected. Our fee is a flat $1,500 per tax period corrected, paid up front, and if OTR does not correct a period, the $1,500 for that period is refunded in full.