Water heater replacement in Reston and Herndon, VA
Reston and Herndon sit in western Fairfax County. Fairfax Water Heaters covers both communities on one page because they share a county permit office, a lot of the same housing types, and the same regional water and rebate picture — with a few local wrinkles worth calling out.
Permits
Both communities use Fairfax County PLUS for the county building permit. Gas replacements need a permit (Household Appliance when there is no new gas pipe; Residential Plumbing when there is). Fuel-burning jobs need a chimney vent certification. Official: Fairfax County HAPL. See also the permits guide.
Fairfax County’s published extra-approval rule for PLUS names the Towns of Vienna and Clifton. It does not list Herndon on that same line, and we will not invent a town-permit step that the county page does not state. Association or landlord approval, though, is a separate question — especially in Reston.
Reston: planned community and associations
Reston is a planned community with a large share of townhomes, condos, and mid-century modern or contemporary single-family houses. Water heaters are often in a closet or a tight utility room rather than a wide basement. Reston Association (and many cluster or condo associations) may have rules about work hours, access, and where a sidewall vent can terminate. Those rules are not a substitute for the county permit, and the county permit is not a substitute for association approval. Share what you have when you request a quote.
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Herndon: older town lots and newer infill
Herndon has a mix of older single-family lots closer to the town center and later townhome and condo development toward the Dulles corridor. Basement tanks still show up on the older lots; closet installs are common in the newer ones. The Town of Herndon is a town, but the water-heater building permit path we are describing is the county path unless a specific town page says otherwise for your job — we will check rather than guess.
Water, tankless, and rebates
Most addresses here are on Fairfax Water (typically 5–10 grains per gallon). That is directly relevant if you want tankless. Washington Gas and Dominion rebate paths are the same regional programs described on the gas and electric / heat pump pages; verify current rules before you count on them.
Nearby areas
- Fairfax, VA
City and Fairfax County neighborhoods - Arlington
Homes, townhouses, and condos - Alexandria
City of Alexandria and county addresses - Woodbridge
Prince William County - Springfield
Franconia and Kingstowne
FAQ
Do you cover both Reston and Herndon?
Yes. This page is for both.
Do I need Reston Association approval in addition to a county permit?
Often you will need to follow association rules even when the county permit is the legal building permit. Check your cluster or condo documents and tell us what they require.