57 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cortland: Renewal by Andersen, CR Score 59/100; 4.8★ from 727 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): JM Construction, posts 24/7 hours; ranked #7 of 57.
Most-reviewed: Glass Doctor of Syracuse, NY, 945 Google reviews at 4.9★, the most of 57 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
57 Cortland window installers are ranked here by CR Score, from ten published factors. 8 are open 24/7, 23 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.7★ across 57 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Renewal by Andersen | 59 | 4.8★ (727) | Syracuse, 31 mi away | Sat | Overall |
| 2 | Git -er- FixD Construction | 58 | 4.4★ (25) | Cortland | Sat · Sun · Evenings | — |
| 3 | Glass Doctor of Syracuse, NY | 57 | 4.9★ (945) | Syracuse, 36 mi away | — | Most reviews |
| 4 | GlassSmith Inc | 56 | 4.8★ (32) | Cortland | — | — |
| 5 | Window World of Binghamton | 56 | 4.8★ (473) | Johnson City, 35 mi away | — | — |
| 6 | Energy Savers Inc. | 56 | 4.9★ (272) | Syracuse, 32 mi away | — | — |
| 7 | JM Construction | 55 | 4.4★ (7) | New Milford, 23 mi away | 24/7 | Emergencies |
| 8 | Universal Windows Direct of Syracuse | 54 | 4.9★ (131) | Syracuse, 34 mi away | Evenings | — |
| 9 | JKS Home Improvement | 53 | 4.7★ (355) | Endwell, 35 mi away | 24/7 | — |
| 10 | Graves Brothers Home Improvement | 53 | 4.7★ (285) | Syracuse, 33 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 727 Google reviews, listed on Google as “Window installation service”.
Based in Cortland
Ranked #2 because of its Google rating and trade focus: 4.4★ from 25 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 36 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 945 Google reviews, the most in Cortland.
Based in Cortland
Ranked #4 because of its Google rating and trade focus: 4.8★ from 32 Google reviews, listed on Google as “Window installation service”.
Based in Johnson City, 35 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 473 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 32 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 272 Google reviews, listed on Google as “Window installation service”.
Based in New Milford, 23 mi away
Ranked #7 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 34 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Window installation service”.
Based in Endwell, 35 mi away
Ranked #9 because of its Google rating and review volume: 4.7★ from 355 Google reviews.
Based in Syracuse, 33 mi away
Ranked #10 because of its Google rating and review volume: 4.7★ from 285 Google reviews.
Based in Syracuse, 36 mi away
Ranked #11 because of its Google rating and review volume: 4.6★ from 796 Google reviews.
Based in Mattydale, 34 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Window installation service”.
Based in Endicott, 36 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 34 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 379 Google reviews.
Based in Syracuse, 35 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 66 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 35 mi away
Ranked #16 because of its Google rating and review volume: 4.7★ from 597 Google reviews.
Based in Binghamton, 37 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “Window installation service”.
Based in North Syracuse, 36 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “Window installation service”.
Based in Binghamton, 37 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 28 Google reviews, listed on Google as “Window installation service”.
Based in Binghamton, 35 mi away
Ranked #20 because of its Google rating and trade focus: 4.2★ from 73 Google reviews, listed on Google as “Window installation service”.
Based in Syracuse, 31 mi away
Ranked #21 because of its Google rating and review volume: 4.6★ from 35 Google reviews.
Based in Syracuse, 31 mi away
Ranked #22 because of its Google rating and review volume: 4.8★ from 409 Google reviews.
Based in Ithaca, 19 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Window installation service”.
Based in Elmira, 37 mi away
Ranked #24 because of its Google rating and trade focus: 4.0★ from 14 Google reviews, listed on Google as “Window installation service”.
Based in Binghamton, 37 mi away
Ranked #25 because of its Google rating and trade focus: 4.5★ from 33 Google reviews, listed on Google as “Window installation service”.
#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 57 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 |
|---|---|---|
| 123 Heating & Cooling Pros | 5.0★ (1) | In Cortland |
| A1 ConstrACTION LLC | 5.0★ (1) | 23 mi |
| Cedar Bay Contractors Ltd | 5.0★ (2) | 31 mi |
| Comfort Windows | 5.0★ (1) | 20 mi |
| Custom Cleaning Property Solutions LLC | 5.0★ (5) | In Cortland |
| E & V Energy | 4.3★ (104) | In Cortland |
| Forker's Carpet and Vent Cleaning | 4.9★ (61) | In Cortland |
| FSS - Genovese Home Improvement - Syracuse | 3.0★ (2) | 33 mi |
| Gallagher Construction | In Cortland | |
| Hamilton Building Services | 3.9★ (7) | In Cortland |
| Ithaca Cortland Painters | In Cortland | |
| JBK Builders Inc | 5.0★ (1) | In Cortland |
| JM Window Designs | 5.0★ (1) | 23 mi |
| JMS Plumbing | 4.9★ (741) | In Cortland |
| Lukim Construction, LLC | 4.9★ (86) | In Cortland |
| M.R. Fix It | 5.0★ (15) | In Cortland |
| Overhead Door Company of Cortland, Inc. | 5.0★ (471) | In Cortland |
| R. J. Aley Building Contractor | 5.0★ (1) | 23 mi |
| Surface Painting Company LLC | 4.2★ (10) | In Cortland |
| Wood the Door Guy Installs Windows and Doors | In Cortland |
Typical prices in USD, adjusted for New York with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,730 | $7,980 | $12,860 | Per project (several windows): typical range of customer-reported projects. US national range × 1.09 Middle Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
We scored 57 Cortland 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 Cortland 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 |