Off-Grid Living in Falls Church city, Virginia

I'll be upfront: Falls Church is about as far from "off-grid friendly" as it gets in Virginia, and it's worth understanding why before you get your hopes up about homesteading here. Falls Church is an independent city, meaning it's not part of any county and runs its own zoning, building, and utility codes rather than sharing them with a surrounding county. That matters because there's no unzoned or rural pocket to fall back on. Every parcel is inside a comprehensive Zoning Code administered by the City's Zoning Division, and the whole place is built out at fairly low-density single-family character. There's no raw-land, live-off-the-map option here.

On dwellings, the City defines a one-family dwelling as a detached building with one dwelling unit, and it treats manufactured homes differently from RVs. I didn't find anything in the code that lets you legally live in an RV or tiny house on wheels as a permanent residence. If you want a small footprint, the better path in Falls Church is an accessory dwelling unit: the City Council adopted a more permissive ADU ordinance in 2025 that dropped the special-use-permit requirement for most residential properties, capped ADU size relative to the primary home, and banned short-term rentals of them. Ask the Zoning Division for the current size and use limits before you plan anything.

Building work of any kind runs through the state's Uniform Statewide Building Code, administered locally at the City's Permits Counter alongside Zoning Division review, plus the City's own Property Maintenance Code for upkeep issues the state code doesn't cover.

Here's the big one for off-grid folks: Falls Church is essentially fully sewered and fully served by public water through Fairfax Water. The City Charter gives Falls Church explicit authority to compel sewer hookup on abutting properties and to regulate or prohibit private sewer/septic alternatives where public sewer is available. So septic and composting toilets aren't really live options within the city outside rare edge cases, and the same logic applies to private wells, since I found no city-specific well program, only the general state VDH framework that would apply if one somehow existed. Greywater reuse has no Falls Church-specific rule that I could locate, so the state Board of Health baseline would govern, and you should not assume you can just plumb it in. Rainwater harvesting looks fine using the state's Tier 4 permit and registration system, though be aware the City treats even gravel driveways as impervious surface for stormwater purposes, which could touch your site planning.

Bottom line: this is a city, not a homestead. If full off-grid independence is your goal, Falls Church isn't going to accommodate it, and you're better off calling the Zoning Division early to confirm anything before you buy or build.