461 deck builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Gaithersburg: Deck Armor, LLC, CR Score 90/100; 4.9★ from 266 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): J&A Deck And Fence, posts 24/7 hours; ranked #3 of 461.
Most-reviewed: Knott's Lawn Service, 462 Google reviews at 5.0★, the most of 461 ranked; ranked #21.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
461 Gaithersburg deck builders are ranked here by CR Score, from 8 published factors. 44 are open 24/7, 279 open Saturdays and 123 open Sundays, based on posted hours. The median Google rating is 4.9★ across 461 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Deck Armor, LLC | 90 | 4.9★ (266) | Gaithersburg | Sat · Sun | Overall |
| 2 | Serrano Master Deck, LLC | 89 | 4.9★ (131) | Gaithersburg | Sat · Sun | — |
| 3 | J&A Deck And Fence | 87 | 4.8★ (26) | Germantown, 5 mi away | 24/7 | Emergencies |
| 4 | Montgomery Decks | 85 | 5.0★ (150) | Darnestown, 3 mi away | Sat | — |
| 5 | DeckMaxtor | 84 | 5.0★ (24) | Clarksburg, 6 mi away | Sat · Sun · Evenings | — |
| 6 | Mr Deck and Patio Contractor - Fairfax | 84 | 5.0★ (30) | Fairfax, 21 mi away | 24/7 | — |
| 7 | Gold Potomac Patios | 83 | 5.0★ (35) | Poolesville, 11 mi away | Sat · Sun | — |
| 8 | Capitol Improvements - Gaithersburg Roofing Company & Siding Contractors | 83 | 5.0★ (157) | Gaithersburg | Sat · Sun · Evenings | — |
| 9 | FA Outdoor Spaces | 83 | 5.0★ (104) | Fairfax, 21 mi away | Sat · Sun · Evenings | — |
| 10 | Archadeck of Northern Virginia West | 83 | 5.0★ (11) | Herndon, 16 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg
Ranked #2 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Germantown, 5 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 26 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Darnestown, 3 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 150 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clarksburg, 6 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fairfax, 21 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Poolesville, 11 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg
Ranked #8 because of its Google rating and availability: 5.0★ from 157 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fairfax, 21 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Herndon, 16 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ashburn, 19 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “Deck builder”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Gaithersburg
Ranked #12 because of its Google rating and availability: 4.9★ from 37 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg
Ranked #13 because of its Google rating and availability: 4.8★ from 45 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in North Potomac, 2 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 37 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockville, 3 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 50 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clarksburg, 5 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Laurel, 18 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 273 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg
Ranked #18 because of its Google rating and availability: 5.0★ from 85 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockville, 5 mi away
Ranked #19 because of its Google rating and availability: 4.6★ from 95 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg
Ranked #20 because of its Google rating and trade focus: 4.8★ from 29 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Dundalk, 16 mi away
Ranked #21 because of its Google rating and review volume: 5.0★ from 462 Google reviews, the most Google reviews on this list (462).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockville, 4 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 25 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Germantown, 9 mi away
Ranked #23 because of its Google rating and trade focus: 4.5★ from 15 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockville, 7 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 141 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ashburn, 17 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Deck builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 461 ranked deck builders here; the rest are on their profiles.
20 more deck builders within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Abode Construction | 4.9★ (9) | In Gaithersburg |
| Alexis Landscaping Group LLC | 4.3★ (4) | In Gaithersburg |
| Balchun Construction LLC | 5.0★ (3) | In Gaithersburg |
| Binder & Son Home Improvement | 5.0★ (34) | In Gaithersburg |
| Capital Custom Contractors | In Gaithersburg | |
| Chesapeake Home Restoration | 5.0★ (18) | In Gaithersburg |
| FK Solutions LLC | 3.0★ (2) | In Gaithersburg |
| GE Construction Group LLC | 5.0★ (1) | In Gaithersburg |
| H&w Remodeling LLC | In Gaithersburg | |
| Hambleton Handyman | In Gaithersburg | |
| Honest Repairs LLC | 4.7★ (3) | In Gaithersburg |
| J&A Home Improvement services LLC | 5.0★ (2) | In Gaithersburg |
| JW Home Improvement | 4.5★ (323) | In Gaithersburg |
| KMC HOME IMPROVEMENT LLC | 5.0★ (1) | In Gaithersburg |
| MGS Construction LLC | 4.8★ (29) | In Gaithersburg |
| Monticello Construction LLC | 5.0★ (25) | In Gaithersburg |
| My Bloom | 4.0★ (8) | In Gaithersburg |
| Portland Builder LLC | 5.0★ (12) | In Gaithersburg |
| Prime Construction Corp | 3.0★ (4) | In Gaithersburg |
| RemodelX Kitchen and Bath | 5.0★ (18) | In Gaithersburg |
Typical prices in USD, adjusted for Maryland with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Deck building | $4,370 | $8,380 | $12,750 | Per deck: typical range of customer-reported projects. US national range × 1.01 South Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
We scored 461 Gaithersburg deck builders on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Gaithersburg data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |