Where we work

84 Maryland and Virginia towns. One shop.

We are not a franchise with a call centre in another state. Every crew on this map runs out of one building in Bethesda, and the furthest town on it is a 41-mile drive. Pick your town for the permit office, the ZIPs we cover, and what roofs there are actually made of.

84Towns served
6Counties
4.9★139 Google reviews
650+Roofs completed
Get my free inspection → (240) 880-2108
Map of the 26 Maryland and Virginia towns United Developers servesEach town is plotted at its real coordinates. Rings mark 10, 20, 30 and 40 miles from our Bethesda office. Every town is also listed in text below the map, grouped by county, so the map is never the only way to reach any of them.10 mi20 mi30 mi40 miSilver SpringRockvilleBethesdaGaithersburgGermantownFrederickColumbiaBowiePotomacWheatonTakoma ParkOlneyClarksburgChevy ChaseKensingtonHyattsvilleCollege ParkLaurelGreenbeltUpper MarlboroEllicott CityElkridgeAnnapolisSeverna ParkGlen BurnieWestminsterOur shop · Bethesda
  • Montgomery 17
  • Frederick 2
  • Howard 5
  • Prince George's 14
  • Anne Arundel 10
  • Carroll 2
  • Our shop

This is a real map, not a picture of one and not an embed: every town is drawn at its own coordinates and every coordinate is one this site already publishes. Lutherville Timonium, Parkville, Pikesville, Owings Mills, Catonsville, Gwynn Oak, Baltimore, Fort Washington, Brandywine, District Heights, Clinton, Capitol Heights, Temple Hills, Pasadena, Severn, Millersville, Clarksville, Boyds, Poolesville, Mount Airy, Sykesville, Alexandria, Arlington, Fairfax, Sterling, Ashburn, Vienna, Herndon, Centreville, Springfield, Burke, McLean, Woodbridge, North Potomac, Waldorf, Burtonsville, Riva, Jessup, Prince Frederick, Edgewater, Odenton, Hanover, Beltsville, Lanham, Montgomery Village, White Plains, La Plata, Huntingtown, Mechanicsville, California, Reston, Falls Church, Annandale, Chantilly, Leesburg, Manassas, Gainesville, Haymarket are served but are not plotted, because no source we can cite gives a coordinate for them — a pin we guessed would look exactly as confident as the ones we did not. Rings are true miles from our office. Every town is also listed in text below.

Montgomery County

Montgomery County, Maryland

17 communities · Silver Spring · Rockville · Bethesda · Gaithersburg · Germantown · Potomac · Wheaton · Takoma Park · Olney · Clarksburg · Chevy Chase · Kensington · Boyds · Poolesville · North Potomac · Burtonsville · Montgomery Village

Who issues the roof permit here: Montgomery County Department of Permitting Services (DPS) · 240-777-0311. We pull it; you do not.

Permits, housing stock and storm history for Montgomery County →

BoydsServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Boyds, MD

Montgomery County

ZIPs we cover: 20841

Also serving Barnesville.

PoolesvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Poolesville, MD

Montgomery County · has a historic district — exterior work there needs its own review

ZIPs we cover: 20837

Also serving Barnesville, Dickerson, Darnestown, Beallsville.

North PotomacServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

North Potomac, MD

Montgomery County

ZIPs we cover: 20878 · 20850

Also serving Darnestown.

BurtonsvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Burtonsville, MD

Montgomery County

ZIPs we cover: 20866

Also serving Colesville, Ashton.

Montgomery VillageServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Montgomery Village, MD

Montgomery County

ZIPs we cover: 20886 · 20879

Frederick County

Frederick County, Maryland

2 communities · Frederick · Mount Airy

Who issues the roof permit here: the City of Frederick · 301-600-3808. We pull it; you do not.

Permits, housing stock and storm history for Frederick County →

Mount AiryServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Mount Airy, MD

Frederick County

ZIPs we cover: 21771

Also serving New Market, Damascus, Woodbine, Ridgeville.

Howard County

Howard County, Maryland

5 communities · Columbia · Ellicott City · Elkridge · Clarksville · Jessup

Who issues the roof permit here: the Howard County Department of Inspections, Licenses and Permits (DILP) · 410-313-2455. We pull it; you do not.

Permits, housing stock and storm history for Howard County →

ClarksvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Clarksville, MD

Howard County

ZIPs we cover: 21029

Also serving Fulton, Highland.

JessupServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Jessup, MD

Howard County

ZIPs we cover: 20794

Also serving Hanover, Savage.

Prince George's County

Prince George's County, Maryland

14 communities · Bowie · Hyattsville · College Park · Laurel · Greenbelt · Upper Marlboro · Fort Washington · Brandywine · District Heights · Clinton · Capitol Heights · Temple Hills · Beltsville · Lanham

Who issues the roof permit here: the Prince George's County Department of Permitting, Inspections and Enforcement (DPIE) · 301-636-2050. We pull it; you do not.

Permits, housing stock and storm history for Prince George's County →

College ParkTakoma ParkHyattsville

Hyattsville, MD

8 mi from our office

Prince George's County · has a historic district — exterior work there needs its own review

ZIPs we cover: 20781 · 20782 · 20783

Also serving Riverdale Park, Mount Rainier.

College ParkGreenbelt

Greenbelt, MD

11 mi from our office

Prince George's County · has a historic district — exterior work there needs its own review

ZIPs we cover: 20770

Also serving Berwyn Heights, Lanham, Beltsville.

Fort WashingtonServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Fort Washington, MD

Prince George's County

ZIPs we cover: 20744

Also serving Oxon Hill, Accokeek, Temple Hills, National Harbor.

BrandywineServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Brandywine, MD

Prince George's County

ZIPs we cover: 20613

Also serving Clinton, Accokeek, Waldorf.

District HeightsServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

District Heights, MD

Prince George's County

ZIPs we cover: 20747

Also serving Forestville, Suitland, Capitol Heights, Hillcrest Heights.

ClintonServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Clinton, MD

Prince George's County

ZIPs we cover: 20735

Also serving Brandywine, Temple Hills, Camp Springs.

Capitol HeightsServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Capitol Heights, MD

Prince George's County

ZIPs we cover: 20743

Also serving District Heights, Seat Pleasant, Landover, Forestville.

Temple HillsServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Temple Hills, MD

Prince George's County

ZIPs we cover: 20748

Also serving Camp Springs, Hillcrest Heights, Oxon Hill, Suitland.

BeltsvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Beltsville, MD

Prince George's County

ZIPs we cover: 20705

Also serving Calverton, Adelphi.

LanhamServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Lanham, MD

Prince George's County

ZIPs we cover: 20706

Also serving Seabrook, Glenn Dale, New Carrollton.

Anne Arundel County

Anne Arundel County, Maryland

10 communities · Annapolis · Severna Park · Glen Burnie · Pasadena · Severn · Millersville · Riva · Edgewater · Odenton · Hanover

Who issues the roof permit here: the City of Annapolis · 410-263-7961. We pull it; you do not.

Permits, housing stock and storm history for Anne Arundel County →

PasadenaServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Pasadena, MD

Anne Arundel County

ZIPs we cover: 21122

Also serving Riviera Beach, Lake Shore.

SevernServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Severn, MD

Anne Arundel County

ZIPs we cover: 21144

Also serving Odenton, Millersville, Hanover.

MillersvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Millersville, MD

Anne Arundel County

ZIPs we cover: 21108

Also serving Crownsville, Severn, Gambrills.

RivaServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Riva, MD

Anne Arundel County

ZIPs we cover: 21140

Also serving Edgewater, Davidsonville, Crofton, Mayo.

EdgewaterServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Edgewater, MD

Anne Arundel County

ZIPs we cover: 21037

Also serving Riva, Mayo, Davidsonville, Shady Side.

OdentonServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Odenton, MD

Anne Arundel County

ZIPs we cover: 21113

Also serving Crofton, Severn, Gambrills, Hanover, Millersville.

HanoverServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Hanover, MD

Anne Arundel County

ZIPs we cover: 21076

Also serving Jessup, Odenton, Severn, Arundel Mills.

Carroll County

Carroll County, Maryland

2 communities · Westminster · Sykesville

Who issues the roof permit here: the Carroll County Bureau of Permits and Inspections · 410-386-2400. We pull it; you do not.

Permits, housing stock and storm history for Carroll County →

Westminster

Westminster, MD

41 mi from our office

Carroll County · has a historic district — exterior work there needs its own review

ZIPs we cover: 21157 · 21158

Also serving Eldersburg, Finksburg, Hampstead, New Windsor.

SykesvilleServed — not plotted on the map above, because no coordinate for it is published in a source we can cite. The town is covered; the pin would be a guess.

Sykesville, MD

Carroll County · has a historic district — exterior work there needs its own review

ZIPs we cover: 21784

Also serving Eldersburg, Marriottsville, Woodbine.

The work itself

Two jobs, photographed properly

The same specification in every town on this map. GAF limited lifetime material warranty, MHIC #111971.

BeforeA brick colonial with an aged asphalt roof: dark algae streaking across both slopes, green moss along the shaded valley, and shingles curled or missing above the garage
Algae streaking on both slopes, moss holding in the shaded valley, and shingles curled or gone above the garage. This roof was not leaking yet.
AfterThe same brick colonial photographed from the same place on the street with a new architectural asphalt shingle roof, uniform in colour across every slope
The same house, same spot on the street, same flat light. New architectural shingles, one colour across every plane, ridge line straight from gable to gable.

Two frames, one address, the same flat overcast light — you can check that yourself from the trees, the neighbour’s siding and the wet driveway, which is the point.

Standing seam

And the same standard in metal

One job, three stages. Membrane down first, then panels, then the seams closed.

A standing-seam metal roof mid-installation: Carlisle WIP 300HT ice-and-water membrane covering the deck, a skylight curb flashed, a drill, snips and pipe boots laid out on the slope
Ice-and-water membrane over the whole deck before a single panel goes down. The skylight curb gets flashed, not caulked.
Standing-seam panels installed with the factory protective film still half-peeled off them, an underlayment roll on the adjacent slope
Panels in, factory film still coming off. It stays on until the last seam is closed so nothing gets scratched by our own boots.
The same metal roof further along: panels seamed, a repointed brick chimney behind them, and the membrane still visible on the courses not yet covered
The same roof, further along. The chimney was repointed while we had the roof open — cheaper now than as its own trip.

None of these five frames is captioned with a town, because we do not have a record of which town each one is in, and a photograph labelled with a place it might not be is not evidence of anything. If you want to see finished work near you specifically, ask on the call and we will bring addresses.

Every town, in text

The map above needs a screen and a mouse. This list does not, and it goes to the same pages.

Silver Spring, MD · MontgomeryRockville, MD · MontgomeryBethesda, MD · MontgomeryGaithersburg, MD · MontgomeryGermantown, MD · MontgomeryFrederick, MD · FrederickColumbia, MD · HowardBowie, MD · Prince George'sPotomac, MD · MontgomeryWheaton, MD · MontgomeryTakoma Park, MD · MontgomeryOlney, MD · MontgomeryClarksburg, MD · MontgomeryChevy Chase, MD · MontgomeryKensington, MD · MontgomeryHyattsville, MD · Prince George'sCollege Park, MD · Prince George'sLaurel, MD · Prince George'sGreenbelt, MD · Prince George'sUpper Marlboro, MD · Prince George'sEllicott City, MD · HowardElkridge, MD · HowardAnnapolis, MD · Anne ArundelSeverna Park, MD · Anne ArundelGlen Burnie, MD · Anne ArundelWestminster, MD · CarrollLutherville Timonium, MD · BaltimoreParkville, MD · BaltimorePikesville, MD · BaltimoreOwings Mills, MD · BaltimoreCatonsville, MD · BaltimoreGwynn Oak, MD · BaltimoreBaltimore, MD · Baltimore CityFort Washington, MD · Prince George'sBrandywine, MD · Prince George'sDistrict Heights, MD · Prince George'sClinton, MD · Prince George'sCapitol Heights, MD · Prince George'sTemple Hills, MD · Prince George'sPasadena, MD · Anne ArundelSevern, MD · Anne ArundelMillersville, MD · Anne ArundelClarksville, MD · HowardBoyds, MD · MontgomeryPoolesville, MD · MontgomeryMount Airy, MD · FrederickSykesville, MD · CarrollAlexandria, MD · City of AlexandriaArlington, MD · ArlingtonFairfax, MD · FairfaxSterling, MD · LoudounAshburn, MD · LoudounVienna, MD · FairfaxHerndon, MD · FairfaxCentreville, MD · FairfaxSpringfield, MD · FairfaxBurke, MD · FairfaxMcLean, MD · FairfaxWoodbridge, MD · Prince WilliamNorth Potomac, MD · MontgomeryWaldorf, MD · CharlesBurtonsville, MD · MontgomeryRiva, MD · Anne ArundelJessup, MD · HowardPrince Frederick, MD · CalvertEdgewater, MD · Anne ArundelOdenton, MD · Anne ArundelHanover, MD · Anne ArundelBeltsville, MD · Prince George'sLanham, MD · Prince George'sMontgomery Village, MD · MontgomeryWhite Plains, MD · CharlesLa Plata, MD · CharlesHuntingtown, MD · CalvertMechanicsville, MD · St. Mary'sCalifornia, MD · St. Mary'sReston, MD · FairfaxFalls Church, MD · FairfaxAnnandale, MD · FairfaxChantilly, MD · FairfaxLeesburg, MD · LoudounManassas, MD · Prince WilliamGainesville, MD · Prince WilliamHaymarket, MD · Prince William

Not sure where your roof stands?

A free 24-hour inspection with a photo report you keep. We photograph the whole roof, show you what we find, and put a replacement price in writing — Priced off your ZIP and a measured roof — in writing before we start.

  • Full roof replacements — not patches
  • Free 24-hour inspection with a photo report you keep
  • MHIC #111971 · A+ BBB Accredited · GAF limited lifetime material warranty
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4.9★ from 139 Google reviews

What homeowners say

★★★★★

“I can't speak highly enough of United Developers. They did an amazing job dealing with a difficult insurance company and fixing our home at very little cost to us. Our house looks beautiful.”

Maryam NozaryLocal Guide · Google
★★★★★

“Alex helped me with the estimate, paperwork, schedule, and insurance claim. We were very satisfied with the quality of the roofing replacement and the timeline. They were prompt throughout.”

Terence LewRoof replacement · Google
★★★★★

“If you're looking for a company you can truly trust, look no further. This team is the real deal — they deliver on every promise they make, and their professionalism shines through in every aspect of their work.”

Robert HenryGoogle review · Google

See all 139 reviews on Google →

MHIC #111971 A+ BBB Accredited Licensed & insured in Maryland Family-owned since 2005 650+ roofs completed GAF limited lifetime material warranty Financing available Se habla español