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Thos C Johnson IncRoofer in Darnestown, MD

Thos C Johnson Inc is a roofer at 17509 Park Mill Dr, Derwood, MD 20855, rated 4.7 from 9 Google reviews.

Darnestown, MD0 paid placements in any rankingHow we rank

Call (240) 731-2176

Key facts

Key facts about Thos C Johnson Inc
Address17509 Park Mill Dr, Derwood, MD 20855, Darnestown, MDGet directions
Phone(240) 731-2176
Google rating4.7 from 9 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • Roofingmain tradeadditional Google category
  • Solaradditional Google category

Service area

Serves Darnestown and 12 towns within 40 miles: Redland, Gaithersburg, Montgomery Village, Rockville, Olney, Rossmoor, Leisure World, Aspen Hill, Layhill, Germantown, North Bethesda and North Potomac.

Based in Darnestown, MDView on map

Typical roofing prices

Typical roofing prices
JobLowTypicalHigh
Roof replacementPer project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range × 1.01 South Atlantic factor (2025 Cost vs. Value Report)$7,590$10,120$14,170
Roof repairPer repair: typical range of customer-reported jobs. US national range$395$1,174$1,968

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

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Google

4.7from 9 Google reviews

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Questions about Thos C Johnson Inc

What areas does Thos C Johnson Inc serve?

Serves Darnestown and 12 towns within 40 miles: Redland, Gaithersburg, Montgomery Village, Rockville, Olney, Rossmoor, Leisure World, Aspen Hill, Layhill, Germantown, North Bethesda and North Potomac. The list is based on the business's location and the usual service radius for roofing. Confirm your address is covered when you call.

What do Google reviews say about Thos C Johnson Inc?

Thos C Johnson Inc has a rating of 4.7 from 9 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Thos C Johnson Inc?

Call Thos C Johnson Inc on (240) 731-2176. The business is at 17509 Park Mill Dr, Derwood, MD 20855, Darnestown, MD. Ask for a written estimate before any work starts.

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