Montgomery County · MD

General Contractor in Gaithersburg

You are choosing who runs the job, not shopping a single trade. We are a licensed contractor in Maryland (MHIC #111971) — we pull the permits through the Montgomery County Department of Permitting Services, coordinate the licensed trades, and hand you a written line-item scope before demolition starts.

★★★★★ 139 Reviews · A+ BBB · MHIC #111971 · VA Class A #2705183185 · Licensed & Bonded in MD & VA

Start your Gaithersburg general contractor with a written scope

Tell us the two things we need to call you back — a project manager rings you to book the free walkthrough. We work Germantown, Montgomery Village, Washington Grove and every Gaithersburg ZIP: 20877, 20878, 20879, 20882, 20886.

  • A written, line-item scope for your Gaithersburg project before anyone swings a hammer
  • Permits pulled through the Montgomery County Department of Permitting Services under MHIC #111971
  • One project manager from demolition to final walkthrough
4.9from 139 Google reviewsRead them →
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Permits & inspections in Montgomery County

The paperwork is the part most contractors gloss over.

A whole-home renovation usually needs a building permit plus separate electrical, plumbing and mechanical permits — each with its own inspection, each on its own timeline. Pulling them is not the hard part; sequencing them so no trade is standing around waiting for an inspector is.

Your Gaithersburg permit goes through the Montgomery County Department of Permitting Services. 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 Gaithersburg

Gaithersburg runs its own permitting for properties inside the city limits — a separate submission and separate inspectors from Montgomery County DPS. A Gaithersburg mailing address does not always mean you are inside the city, and which side of that line you are on decides where the permit goes. We confirm it before filing.

What we find in Gaithersburg homes

The house decides half the scope.

Gaithersburg spans 1960s–1980s subdivisions in the older sections and heavy 1990s–2000s townhome and single-family development further out. In the earlier neighborhoods, expect original electrical service and kitchens that have never been opened up; in the newer ones, the constraint is usually the HOA architectural review rather than the house.

What's included
  • A written, line-item scope before demolition starts
  • Every permit pulled under our license, not yours
  • Licensed electrical, plumbing and HVAC partners we schedule and coordinate
  • One project manager from demo through the final inspection
Planning range — Montgomery County
Scoped per project

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.

Financing is available — most homeowners spread a project this size over monthly payments rather than paying cash up front.

2087720878208792088220886GermantownMontgomery VillageWashington GroveRockville

Free Gaithersburg walkthrough

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

By submitting you agree United Developers may call or text you about your request, including by autodialed/automated means and AI voice, at the number provided. Consent is not a condition of purchase. Msg/data rates may apply. Reply STOP to opt out.

★★★★★
Legitimately excellent. If your roof qualifies to be replaced due to storm damage, go with United Developers. Anthony was with me every step of the way — through the claims process and after the install.
Alex Gray · verified Google review

139 reviews at 4.9 stars across Google, and most of them are for our roofing and exterior work — that is the business we started in. The crew, the licences and the paperwork are the same ones now carrying general contractor projects. Read all our reviews →

Also in Gaithersburg

One contractor for the rest of the house

Our Gaithersburg crews cover Germantown, Montgomery Village, Washington Grove, Rockville and every ZIP in the area — 20877, 20878, 20879, 20882, 20886.

Gaithersburg general contractor questions

Straight answers

Do you handle general contractor in Gaithersburg, MD?

Yes. United Developers is a licensed contractor in Maryland (MHIC #111971) and works throughout Gaithersburg and Montgomery County, including 20877, 20878, 20879, 20882 and nearby Germantown, Montgomery Village, Washington Grove.

Who pulls the permit for a Gaithersburg general contractor project?

We do, under our license, through the Montgomery County Department of Permitting Services. A whole-home renovation usually needs a building permit plus separate electrical, plumbing and mechanical permits — each with its own inspection, each on its own timeline. Pulling them is not the hard part; sequencing them so no trade is standing around waiting for an inspector is.

What should I expect in a Gaithersburg home?

Gaithersburg spans 1960s–1980s subdivisions in the older sections and heavy 1990s–2000s townhome and single-family development further out. In the earlier neighborhoods, expect original electrical service and kitchens that have never been opened up; in the newer ones, the constraint is usually the HOA architectural review rather than the house.

What does general contractor cost in Gaithersburg?

It depends entirely on scope, so we do not publish a single number. You get a written, line-item price after a free on-site walkthrough — not a verbal ballpark over the phone.

Is the Gaithersburg 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.

Do I need a general contractor or can I hire trades directly?

You can hire trades directly, and for a single-trade job that is often cheaper. It stops being cheaper the moment two trades have to be sequenced around an inspection — someone has to own that schedule, and if it is not a contractor it is you. A licensed GC also carries the permit and the liability.

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