83 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sanford: Portland Glass of Springvale & Sanford, CR Score 60/100; 4.9★ from 115 Google reviews; open Saturdays until 12 PM.
Best for emergencies (open 24/7): B's Roofing & Construction LLC, posts 24/7 hours; ranked #7 of 83.
Most-reviewed: Renewal by Andersen Window Replacement, 1,057 Google reviews at 4.8★, the most of 83 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 Sanford window installers are ranked here by CR Score, from ten published factors. 6 are open 24/7, 42 open Saturdays and 16 open Sundays, based on posted hours. The median Google rating is 4.8★ across 83 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Portland Glass of Springvale & Sanford | 60 | 4.9★ (115) | Sanford | Sat | Overall |
| 2 | Renewal by Andersen Window Replacement | 60 | 4.8★ (1,057) | Saco, 18 mi away | — | Most reviews |
| 3 | Portland Glass of Biddeford | 59 | 4.9★ (181) | Biddeford, 16 mi away | Sat | — |
| 4 | Portland Glass of Dover | 58 | 4.8★ (147) | Dover, 16 mi away | Sat | — |
| 5 | Portland Glass of Portland | 57 | 4.7★ (341) | Portland, 29 mi away | Sat | — |
| 6 | Glass Routes Co | 57 | 4.9★ (85) | Barrington, 19 mi away | Sat | — |
| 7 | B's Roofing & Construction LLC | 56 | 5.0★ (46) | Sanford | 24/7 | Emergencies |
| 8 | Portland Glass of Portsmouth | 56 | 4.7★ (159) | Portsmouth, 28 mi away | Sat | — |
| 9 | Regal Replacement Windows | 56 | 4.9★ (40) | Portland, 30 mi away | Sat · Sun · Evenings | — |
| 10 | The Window Doctor | 55 | 4.9★ (27) | Eliot, 23 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 115 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saco, 18 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 1,057 Google reviews, the most in Sanford.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Biddeford, 16 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 181 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dover, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 147 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portland, 29 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 341 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrington, 19 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 85 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sanford
Ranked #7 because of its Google rating and review volume: 5.0★ from 46 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth, 28 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 159 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portland, 30 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eliot, 23 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Westbrook, 25 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 123 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portland, 29 mi away
Ranked #12 because of its Google rating and trade focus: 3.9★ from 25 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carney, 17 mi away
Ranked #13 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kennebunk, 14 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 53 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gorham, 35 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 145 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth, 28 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 28 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Portland, 28 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 91 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Biddeford, 12 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Franklin, 36 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Gutter cleaning service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Buxton, 19 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eliot, 13 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 20 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rochester, 11 mi away
Ranked #22 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Biddeford, 15 mi away
Ranked #23 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sanford
Ranked #24 because of its Google rating and review volume: 4.4★ from 77 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 40 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 141 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 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 83 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 |
|---|---|---|
| All Time Builders, LLC | 5.0★ (1) | 24 mi |
| AM Builders | 5.0★ (2) | 36 mi |
| Beaver Building Inc | 1.0★ (1) | 26 mi |
| Cazco Home Improvement, LLC | 5.0★ (1) | 10 mi |
| CC Carpentry & Woodwork | 15 mi | |
| Charlant Builders llc | In Sanford | |
| FIRST LIGHT CUSTOM HOMES LLC | 5.0★ (2) | 10 mi |
| Four Seasons Sunrooms | 12 mi | |
| Little Harbor Window | 11 mi | |
| Local painters D.A.D.S. Painting & Siding | 3.0★ (2) | 32 mi |
| Pro-United, Inc | 5.0★ (2) | 28 mi |
| Quality Roofing of New Hampshire | 5.0★ (1) | 38 mi |
| Replacement Windows And Doors In Portsmouth NH | 14 mi | |
| Seacoast Climate Control | 5.0★ (3) | In Sanford |
| SeaviewBuilders | 5.0★ (1) | 28 mi |
| Solarize Window Insulators | 5.0★ (1) | 13 mi |
| Spagna Remodeling Co., LLC | 5.0★ (1) | 28 mi |
| Wild Woods Carpentry & Building | 5.0★ (1) | 33 mi |
| Yelinko Carpentry, LLC | 15 mi | |
| Zhumas Construction | 5.0★ (2) | 33 mi |
Typical prices in USD, adjusted for Maine with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,410 | $7,300 | $11,760 | Per project (several windows): typical range of customer-reported projects. US national range × 0.99 New England factor (2025 Cost vs. Value Report) | October 2026 |
We scored 83 Sanford window installers on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Sanford data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |