588 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Londontowne: Window Nation, CR Score 92/100; 4.7★ from 4,186 Google reviews; open 24/7.
Best for emergencies (open 24/7): Kennedy Locksmith, posts 24/7 hours; ranked #2 of 588.
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 588 ranked after Window Nation; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
588 Londontowne window installers are ranked here by CR Score, from 8 published factors. 89 are open 24/7, 396 open Saturdays and 233 open Sundays, based on posted hours. The median Google rating is 4.8★ across 588 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Window Nation | 92 | 4.7★ (4,186) | Glen Burnie, 17 mi away | 24/7 | Overall |
| 2 | Kennedy Locksmith | 89 | 4.9★ (980) | Aspen Hill, 28 mi away | 24/7 | Emergencies |
| 3 | Kennedy Glass in DC | 88 | 4.9★ (382) | Washington, D.C., 26 mi away | 24/7 | — |
| 4 | Safety Glass Repair | 87 | 5.0★ (97) | Catonsville, 22 mi away | 24/7 | — |
| 5 | Prestine Glass Solutions – Window & Glass Replacement | 87 | 5.0★ (101) | Washington, D.C., 24 mi away | 24/7 | — |
| 6 | Zen Windows Washington DC | 87 | 5.0★ (119) | Washington, D.C., 27 mi away | 24/7 | — |
| 7 | Lumina Glass & Windows | 86 | 5.0★ (107) | Washington, D.C., 26 mi away | 24/7 | — |
| 8 | West Shore Home | 86 | 4.8★ (1,036) | Arbutus, 21 mi away | Sat · Sun · Evenings | — |
| 9 | Thompson Creek Window Company Lanham | 86 | 4.5★ (3,143) | Lanham, 16 mi away | Sat · Sun · Evenings | — |
| 10 | KELEMER BROTHERS REPLACEMENT WINDOWS | 86 | 5.0★ (416) | Silver Spring, 26 mi away | Sat · Sun · Evenings | — |
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 review volume: 4.7★ from 4,186 Google reviews, the most Google reviews on this list (4,186).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Aspen Hill, 28 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 980 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 26 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 382 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Catonsville, 22 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 97 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 24 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 101 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 27 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 119 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 26 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 107 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Arbutus, 21 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 1,036 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lanham, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 3,143 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Silver Spring, 26 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 416 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 25 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 3,700 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg, 37 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 165 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in North Bethesda, 31 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,041 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 24 mi away
Ranked #14 because of its Google rating and availability: 4.6★ from 262 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 26 mi away
Ranked #15 because of its Google rating and availability: 4.8★ from 116 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in College Park, 22 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 159 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hyattsville, 17 mi away
Ranked #17 because of its Google rating and availability: 4.7★ from 53 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 27 mi away
Ranked #18 because of its Google rating and availability: 4.9★ from 74 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Annapolis, 4 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 221 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Arlington, 29 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 80 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lorton, 37 mi away
Ranked #21 because of its Google rating and availability: 4.5★ from 1,235 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Alexandria, 32 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 372 Google reviews, listed on Google as “Window installation service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Odenton, 4 mi away
Ranked #23 because of its Google rating and availability: 4.8★ from 80 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 14 mi away
Ranked #24 because of its Google rating and availability: 4.8★ from 949 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Annapolis, 4 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 407 Google reviews, listed on Google as “Window installation service”.
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 588 ranked window installers here; the rest are on their profiles.
20 more window installers within 40 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 |
|---|---|---|
| 410 New Roof | 5.0★ (2) | 21 mi |
| Accents Pro Renovators LLC | 5.0★ (2) | 23 mi |
| Allied Auto Glass of D.C | 5.0★ (2) | 27 mi |
| C R Windows Inc. | 5.0★ (2) | 14 mi |
| Clear Choice of Maryland | 3.0★ (2) | 17 mi |
| Cobb & Sons Roofing & Exterior Co. | 5.0★ (2) | 26 mi |
| Even’s Exterior, LLC | 5.0★ (2) | 3 mi |
| Faro Improvements | 5.0★ (2) | 11 mi |
| Fox Creek Builders LLC | 5.0★ (2) | 15 mi |
| Glen Burnie Auto Glass | 5.0★ (2) | 16 mi |
| HiRISE WINDOWS | 3.0★ (2) | 30 mi |
| Home Services at The Home Depot | 3.0★ (2) | 19 mi |
| LUNA AUTO DETAIL | 3.0★ (2) | 21 mi |
| M & G Renovations, Inc | 5.0★ (2) | 21 mi |
| Oriental Living | 5.0★ (2) | 30 mi |
| Quality Auto Glass | 5.0★ (2) | 24 mi |
| Sears Heating and Air Conditioning | 3.0★ (2) | 1 mi |
| SG Windows and Doors LLC | 5.0★ (2) | 24 mi |
| TriState Glassworx | 5.0★ (2) | 25 mi |
| Tye's Handyman Services | 3.0★ (2) | 24 mi |
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 |
|---|---|---|---|---|---|
| Window replacement | $3,370 | $7,200 | $11,600 | Per project (several windows): typical range of customer-reported projects. US national range × 0.98 South Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
We scored 588 Londontowne window installers 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 Londontowne 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 |