Travis Bunn

Founder, AppealDesk · Published March 27, 2026 · Updated August 19, 2026

Every Virginia Locality Sets Its Own Reassessment Clock. Your Mortgage Servicer Uses Only One.

Updated August 2026

Ask a Fairfax County homeowner when their assessment changes and they will tell you: every January, like clockwork. Ask someone forty minutes west in a small rural county and they might not be able to tell you at all, because the last reassessment was years ago and the next one has not been scheduled yet. Both of them are right, and both of them are looking at the same state law. Virginia does not run one property tax calendar. It runs whatever calendar each city or county chooses, subject to a handful of statutory outer limits.

Your mortgage servicer, meanwhile, does not know or care which kind of locality you live in. Every escrow account in the country is analyzed on the same federal clock, set by Regulation X under RESPA, once per computation year. That mismatch plays out very differently depending on where in Virginia you own a home. This guide walks through both versions of the story and what to do in each one.

A State Law With No Single Answer

Virginia Code Section 58.1-3250 requires cities to run a general reassessment every two years. A city with 30,000 residents or fewer can vote to stretch that to four years. Section 58.1-3252 sets the baseline for counties at every four years, but a county board can vote for a three-year cycle, and any county with 50,000 residents or fewer (plus Augusta and Bedford by name) can vote for a five- or six-year cycle instead. On top of that, Section 58.1-3253 lets any county or city adopt annual or biennial assessment by ordinance regardless of population, and a cluster of fast-growing Northern Virginia jurisdictions with full-time assessor offices have done exactly that. Fairfax County reassesses every property every year, effective January 1, with notices mailed each February. Loudoun County does the same under its own Ordinance 860.09.

Nothing in Virginia law sets a single statewide notice date either. Section 58.1-3330 only requires a notice when your assessed value actually changes, and that notice has to go out at least 15 days before your Board of Equalization hearing, whenever the locality schedules it. And the tax year itself is not fixed: Section 58.1-3281 defaults to a January 1 start, but Section 58.1-3011 lets a locality adopt a July 1 fiscal year by ordinance instead. Add it up and two Virginia homeowners with identical houses in identical school districts can be on completely different clocks for value, notice, and even what counts as the start of their tax year, purely because of which side of a county line they live on.

A worked example: two clocks, one federal analysis (hypothetical)

Take Virginia's statewide figures as a starting point: a $339,000 median home value and a 0.80% effective rate, which works out to about $2,712 in annual tax, or $226 a month in escrow. (Actual rates and assessed values vary a great deal by locality, so treat what follows as illustration, not a quote.) Now put that same home in two different Virginia counties.

In an annual-cycle NoVA county, suppose the assessed value drifts up by a modest 3% this year. Tax rises from $2,712 to roughly $2,793, an $81 annual increase, about $7 more a month. It shows up at the next RESPA analysis, gets folded into the payment, and the homeowner barely notices. The same thing happens again next year, and the year after that: small, frequent, predictable.

In a five-year-cycle rural county, that same home might sit at the same assessed value for four straight years while the servicer keeps escrowing the same $226 a month, because nothing has changed to analyze. Then the reassessment lands and the value jumps 15% in one notice, the amount it might have drifted gradually if reassessed annually. Tax jumps from $2,712 to roughly $3,119, a $407 annual increase packed into a single year. Under 12 CFR 1024.17(f)(3), the servicer cannot just raise the payment overnight; the resulting shortage has to be spread over at least 12 months. Still, that is a real, visible payment jump landing all at once, not the slow drift the NoVA homeowner experiences.

What RESPA Does the Same Way Regardless

However uneven the Virginia side gets, three federal rules in 12 CFR 1024.17 govern your escrow account identically, whether you are in Fairfax or the smallest county on a six-year cycle.

• The annual analysis. Your servicer must analyze your escrow account once every computation year (Section 1024.17(c)(3)). That computation year is set by your loan, not by your locality's reassessment calendar, so it can land at any point relative to your assessment notice.
• The surplus rule. If an analysis turns up a surplus of $50 or more, the servicer must refund it within 30 days (Section 1024.17(f)(2)(i)), as long as you are current on your payments (Section 1024.17(f)(2)(ii)). A locality that just reassessed downward, or a homeowner who just won an appeal, is the classic surplus case.
• The cushion cap. Servicers can hold a reserve cushion, but never more than one-sixth of estimated annual disbursements (Section 1024.17(c)(5)). When a lower tax bill shrinks the projected annual disbursement, the maximum allowed cushion shrinks with it, which is one reason a post-appeal refund is often larger than the tax savings alone.

The rule that matters most depends entirely on which kind of locality you are in: the annual analysis handles the NoVA drift fine on its own; the rural jump is exactly the case the off-cycle option and the shortage rule exist for.

If You Live in an Annual or Biennial Locality

In Fairfax, Loudoun, Prince William, and the other jurisdictions that reassess every year or two under Section 58.1-3253, the appeal window comes around often enough that it is easy to let a year slide by without checking. That is a mistake, because each annual notice is a fresh, independent shot at your value, and each one flows into escrow faster than in a slow-cycle county simply because there is less time between checkpoints for an error to compound. Treat the February notice like a bill you review every year, not a formality: compare it to recent sales near you, and file with the assessor's informal review or the Board of Equalization if it is out of line. Because your escrow analysis is also roughly annual, a corrected value this cycle tends to reach your payment within one analysis, not several years of drift.

If You Live in a Four-, Five-, or Six-Year-Cycle Locality

If your county reassesses on a longer cycle, like Botetourt County's recently extended five-year schedule, the strategy is different. Your escrow account can run flat for years, quietly building whatever cushion the (c)(5) cap allows on your unchanging bill, and then the reassessment year hits all at once. That is precisely the moment to be proactive rather than wait for the next annual analysis to catch up on its own. Once your locality mails the new assessed value and, later, the county issues a bill reflecting it, send your servicer's escrow department both documents and ask in writing for an off-cycle analysis under Section 1024.17(f)(1)(ii). Servicers are permitted, not required, to run one early, but a documented request the same month the new bill lands is your best shot at spreading a large jump over more than one cycle of surprise, and at catching a shortage estimate before it gets built into 12 months of higher payments you were not expecting.

This is also where an over-assessment costs the most in relative terms. A $25,000 overassessment on a six-year cycle is not corrected again until the next scheduled reassessment unless you appeal it, so an error that would only cost a NoVA homeowner one or two years of extra escrow can cost a rural homeowner five or six.

The Appeal Path, Wherever Your Clock Runs

Whatever cycle your locality is on, the appeal structure itself is the same three levels statewide. Start with the assessor's informal review, where many disputes settle without a formal hearing. If that does not resolve it, file with the Board of Equalization, the panel created under state law to hear these disputes; you get at least 15 days notice of your hearing date once it is scheduled (Section 58.1-3330). If the Board's decision still leaves you disagreeing, Virginia allows an Application to Correct Erroneous Assessment in circuit court under Section 58.1-3984, generally within three years of the tax year or one year of the assessment or Board determination, whichever is later. None of these three steps involves your lender at any point. Your servicer only sees the result once your locality issues a corrected bill.

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