Why DOB denies exemption filings
The Department of Buildings doesn't deny filings at random. Nearly every denial we review traces back to one of four problems: the owner picked the wrong exemption category, the documentation was thinner than the statute requires, the property had open violations that undercut the claim, or the filing landed outside a deadline. The exemption categories and their documentation requirements come straight from D.C. Code §42-3131.06a, and DOB reads them literally. "I'm fixing the place up" is not the active construction exemption. A valid permit with visible work in progress is.
Read the denial letter before you do anything
The letter tells you which category DOB evaluated and, usually in one dry sentence, why it failed. That sentence is your roadmap. A denial for "insufficient documentation" is a very different problem from a denial because your for-sale window already expired, and the fix is different too. It also states your appeal rights and the clock attached to them. Appeal windows in this program are short (the designation petition window is 15 days, and appeals of a final determination run through the Real Property Tax Appeals Commission), so the date on the letter matters more than the date you read it.
Match the category to the evidence you actually have
The most common self-inflicted denial: claiming the category that sounds best instead of the one you can prove. Before refiling, line up your paperwork against what DOB expects.
- Active construction (up to 3 tax years). You need a valid, active building permit and real progress an inspector can see. An expired permit, or a permit with no work behind it, gets denied. Pull the permit status on dob.dc.gov before you refile, not after.
- Actively for sale (half a tax year for single-family).DOB wants a real listing: MLS sheet, listing agreement, marketing evidence. A yard sign and a Zillow draft don't count. And the half-year clock runs from the initial listing date, so a house listed eight months ago may have nothing left to claim.
- Probate or title litigation (up to 3 tax years).The filing needs a Superior Court case number and documentation connecting the filer to the estate. An estate that never opened probate has no case number to cite, which is why the exemption "fails" for families who were legally entitled to it.
- Economic or personal hardship (up to 2 tax years). This one is documentation heavy: bankruptcy filings, medical records, insurance claims after a fire. Vague hardship letters get denied. Specific paper gets approved.
Our DC vacant property exemption form guide has the full table of categories, time limits, and what DOB expects attached to each one.
Close the violations first
Open DOB violations quietly kill otherwise valid filings. If the building has an unabated notice of violation, a lapsed vacant building registration, or an unsafe structure order, fix that before refiling. Two things matter here. First, the cure has to show as closed in DOB's system, which means re-inspection, not just the repair itself. Second, even when an exemption is granted, unresolved violations can keep the tax classification punitive at the Office of Tax and Revenue. Winning the exemption on paper while the 5% rate stays on your bill is a real outcome, and it happens more than you'd think.
Check your remaining runway before you burn another year
Exemptions are capped at 5 total tax years in any 12-year period. If your property has cycled through categories for a while, the denial might be doing you a strange favor: forcing the question of whether another exemption year is worth claiming at all, or whether the durable fix is getting the building occupied and reclassified to Class 1. On a $500,000 building the gap between Class 3 and Class 1 is over $20,000 a year, so the answer has real money attached. The rate mechanics are in our Class 3 vs Class 4 guide.
Refile it once, correctly
A second denial costs you more than the first. The assessment calendar keeps moving, the Class 3 rate keeps accruing, and DOB now has a record of two failed claims on the property. So the refiling should be boringly complete: right category, every attachment the statute implies, violations closed and confirmed, submitted through the portal with a confirmation number saved.
If you'd rather not learn DOB's preferences by trial and error, send us the address. We'll pull the DOB record for free and tell you exactly why the first filing died: the open violation you didn't know about, the category that expired, or the attachment that was missing. If we take it on, our fee is 35% of first-year savings, and only if the new rate actually posts to your bill. No savings, no fee. The form below starts the review.