Loudoun County · VA

Home Additions in Leesburg

An addition is the one project where zoning can stop you before design starts. We are a licensed contractor in Virginia (Class A #2705183185) — we pull the permits through the Loudoun County Department of Building and Development, coordinate the licensed trades, and hand you a written line-item scope before demolition starts.

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Permits & inspections in Loudoun County

The paperwork is the part most contractors gloss over.

An addition starts with zoning, not construction: setbacks, lot coverage and height limits get reviewed before a building permit is issued, and in some neighborhoods there is a stormwater or historic review on top. Then come the footing and foundation inspections, which have to pass before backfill. This is the longest-lead permit of any project we do, and it is why we start the paperwork while the design is still being drawn.

Your Leesburg permit goes through the Loudoun County Department of Building and Development. We pull it under our license and we hold the inspection schedule — you do not chase inspectors and you do not sign the application.

Local to Leesburg

The Town of Leesburg issues its own permits inside town limits, separate from Loudoun County, and the Old and Historic District adds design review for exterior work downtown. Outside town, it is a county permit.

What we find in Leesburg homes

The house decides half the scope.

Leesburg pairs a genuinely historic downtown with large newer subdivisions on the edges. Those are two different projects under one town name: in the historic core, assume nothing about the structure until it is open; in the newer neighborhoods, expect HOA review instead.

What's included
  • Zoning, setback and lot-coverage review before design is finalized
  • Footings placed below the regional frost line
  • Footing and foundation inspections passed before backfill
  • Roofline, siding and HVAC tied into the existing house so it does not read as an add-on
Planning range — Loudoun County
$180 – $340 / sq ft

A planning range, not a quote. Your written line-item price comes after a free on-site walkthrough. HVAC, electrical and plumbing are performed by licensed trade partners.

2017520176AshburnLansdownePurcellvilleBrambleton

Free Leesburg walkthrough

A written, line-item scope for your home additions project. No design fee, no obligation.

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Also in Leesburg

One contractor for the rest of the house

Our Leesburg crews cover Ashburn, Lansdowne, Purcellville, Brambleton and every ZIP in the area — 20175, 20176.

Leesburg home additions questions

Straight answers

Do you handle home additions in Leesburg, VA?

Yes. United Developers is a licensed contractor in Virginia (Class A #2705183185) and works throughout Leesburg and Loudoun County, including 20175, 20176 and nearby Ashburn, Lansdowne, Purcellville.

Who pulls the permit for a Leesburg home additions project?

We do, under our license, through the Loudoun County Department of Building and Development. An addition starts with zoning, not construction: setbacks, lot coverage and height limits get reviewed before a building permit is issued, and in some neighborhoods there is a stormwater or historic review on top. Then come the footing and foundation inspections, which have to pass before backfill. This is the longest-lead permit of any project we do, and it is why we start the paperwork while the design is still being drawn.

Is there anything specific to Leesburg I should know?

The Town of Leesburg issues its own permits inside town limits, separate from Loudoun County, and the Old and Historic District adds design review for exterior work downtown. Outside town, it is a county permit.

What does home additions cost in Leesburg?

Most Leesburg projects land in the $180 – $340 / sq ft range. That is a planning range for Loudoun County, not a quote — your written price comes after a free on-site walkthrough.

Is the Leesburg walkthrough and estimate free?

Yes. The walkthrough and the written scope are free and yours to keep whether or not you hire us. There is no design fee and no consultation invoice.

How long does an addition actually take?

The build is rarely the long part — permitting and zoning review are. Expect the approval phase to run in parallel with final design, and expect us to give you a schedule that names the permit milestone rather than hiding it. We will tell you at the walkthrough if your lot has a setback or coverage problem, because that changes the whole conversation.

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