64/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 1,938 Google reviews, the most in South San Francisco.
- 4.8★ from 1,938 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 718 Douglas Ave, Oakland, CA 94603
Best Insulation Contractors in South San Francisco, CA (2026)
83 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in South San Francisco: Attic Pros, CR Score 64/100; 4.8★ from 1,938 Google reviews; open 24/7.
- 6
Best for emergencies (open 24/7): Attic Cleaning Services LLC, posts 24/7 hours; ranked #6 of 83.
- 9
Most-reviewed: Alley Cat, 1,071 Google reviews at 4.9★, the most of 83 ranked after Attic Pros; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 South San Francisco insulation contractors are ranked here by CR Score, from ten published factors. 25 are open 24/7, 62 open Saturdays and 47 open Sundays, based on posted hours. The median Google rating is 5.0★ across 83 rated businesses.
Top 10 insulation contractors in South San Francisco at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 64 | 4.8★ (1,938) | Oakland, 14 mi away | 24/7 | Overall |
| 2 | Alley Cat - Rodent Exclusion Company | 62 | 4.9★ (413) | San Francisco, 9 mi away | Sat · Sun · Evenings | — |
| 3 | Atticare USA | 60 | 4.8★ (439) | San Leandro, 15 mi away | Sat · Sun · Evenings | — |
| 4 | American Attic | 60 | 5.0★ (219) | Oakland, 15 mi away | Sat · Sun | — |
| 5 | Rywen Insulation Inc. | 60 | 5.0★ (151) | San Leandro, 13 mi away | Sat · Sun | — |
| 6 | Attic Cleaning Services LLC | 59 | 4.9★ (76) | Alameda, 16 mi away | 24/7 | Emergencies |
| 7 | EcoGuard Pest Management | 59 | 4.9★ (279) | Dublin, 20 mi away | Sat · Sun · Evenings | — |
| 8 | Attic Star | 58 | 4.9★ (156) | Redwood City, 17 mi away | Sat · Sun · Evenings | — |
| 9 | Alley Cat | 58 | 4.9★ (1,071) | Berkeley, 17 mi away | Evenings | Most reviews |
| 10 | Pro Attic Restoration | 57 | 4.9★ (48) | Hayward, 18 mi away | 24/7 | — |
The 83 best insulation contractors in South San Francisco, ranked
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.
Based in San Francisco, 9 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 413 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 413 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 9 AM–7 PM · Sun 9 AM–6 PM
- Address
- 1390 Market St #200, San Francisco, CA 94102
#3 Atticare USA
Based in San Leandro, 15 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 439 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 439 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat–Sun 9 AM–6 PM
- Address
- 303 W Joaquin Ave Unit #103, San Leandro, CA 94577
Based in Oakland, 15 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 219 Google reviews
- Hours
- Mon–Sun 7 AM–6 PM
- Address
- 2721 106th Ave, Oakland, CA 94605
Based in San Leandro, 13 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 151 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun 9 AM–4 PM
- Address
- 456 Hester St, San Leandro, CA 94577
Based in Alameda, 16 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 76 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Dublin, 20 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 279 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 279 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
#8 Attic Star
Based in Redwood City, 17 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 156 Google reviews
- Hours
- Mon–Thu 7 AM–7:30 PM · Fri 7 AM–6 PM · Sat–Sun 7 AM–7:30 PM
- Address
- 2847 Middlefield Rd, Redwood City, CA 94063
#9 Alley Cat
Based in Berkeley, 17 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 1,071 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 1,071 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat–Sun closed
- Address
- 3030 Ashby Ave #103b, Berkeley, CA 94705
Based in Hayward, 18 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1340 A St, Hayward, CA 94541
Based in Oakland, 13 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 31 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2632 International Blvd #155b, Oakland, CA 94601
Based in San Mateo, 10 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1900 S Norfolk St, San Mateo, CA 94403
Based in Daly City, 3 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 4.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 King Dr #418, Daly City, CA 94015
#14 Attic Elite
Based in Newark, 23 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 474 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 474 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat closed · Sun 8 AM–6 PM
- Address
- 37310 Cedar Blvd Suite H, Newark, CA 94560
Based in Alamo, 25 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 94 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 220 Alamo Plaza, Alamo, CA 94507
Based in San Carlos, 12 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 Glenn Way Suite #13, San Carlos, CA 94070
Based in Richmond, 23 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 57 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3049 Research Dr, Richmond, CA 94806
Based in Alameda, 8 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 33 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 8 AM–5 PM · Sun closed
Based in San Francisco, 12 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 54 Google reviews
- Hours
- Mon–Sat 6 AM–8 PM · Sun closed
- Address
- 800 Avenue H, San Francisco, CA 94130
Based in San Francisco, 9 mi away
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 32 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 1240 Bush St, San Francisco, CA 94109
Based in San Mateo, 7 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 119 Prague St, San Mateo, CA 94401
Based in Redwood Shores, 6 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Sun 8 AM–11 PM
Based in Berkeley, 17 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2113B Delaware St, Berkeley, CA 94709
Based in Palo Alto, 21 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 16 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 407 California Ave Unit 10, Palo Alto, CA 94306
#25 Attic Perfect
Based in San Leandro, 13 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.1★ from 78 Google reviews, listed on Google as “Insulation contractor”.
- 4.1★ from 78 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8:30 AM–5:30 PM
- Address
- 442 Hester St, San Leandro, CA 94577
Insulation contractors ranked #26 to #50
#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 insulation contractors here; the rest are on their profiles.
Also serving South San Francisco
20 more insulation contractors 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 |
|---|---|---|
| A & M Lath & Plastering Inc. | 1.0★ (1) | 13 mi |
| Brandon's Attic Control | 5.0★ (2) | 14 mi |
| Emerald Insulation & Acoustical Inc. | 5.0★ (2) | 7 mi |
| Fire Damage Patrol | 5.0★ (1) | 8 mi |
| Gold attic insulation san Francisco | 5.0★ (1) | 9 mi |
| Golden Restore inc Berkeley | 1.0★ (1) | 17 mi |
| Insulation & Air Duct Crew | 5.0★ (2) | 17 mi |
| Mr. Roofing, Inc. | 4.7★ (103) | In South San Francisco |
| My Steam Rug & Sofa Cleaning | 5.0★ (2) | 19 mi |
| O'Connor Insulation & Energy, Inc | 5.0★ (1) | 19 mi |
| Panda Heating & Cooling | 3.5★ (2) | 14 mi |
| Peak Core Insulation | 5.0★ (2) | 13 mi |
| PRO ATTIC RESTORATION | 5.0★ (2) | 18 mi |
| Quality Conservation Services | 4.6★ (36) | In South San Francisco |
| SF Bay Attic Cleaning | 5.0★ (1) | 14 mi |
| Soundproofing Remodelers San Francisco Bay Area | 5.0★ (2) | 10 mi |
| South San Roofing Pro | 4.9★ (80) | In South San Francisco |
| Tigre Firestop & Insulation | 5.0★ (1) | 18 mi |
| Vermont Solutions, Headquarters | 5.0★ (9) | In South San Francisco |
| Zitro Acoustics | 5.0★ (1) | 18 mi |
How much do insulation contractors cost in South San Francisco?
National price ranges in USD, not adjusted for South San Francisco. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
How we ranked South San Francisco insulation contractors
We scored 83 South San Francisco insulation contractors 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 South San Francisco 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 |
Insulation contractors in South San Francisco: frequently asked questions
Who is the best insulation contractor in South San Francisco?
By CR Score, the highest-ranked insulation contractor in South San Francisco, CA is Attic Pros with a CR Score of 64/100. It has 4.8★ from 1,938 Google reviews. It is open 24/7. Alley Cat - Rodent Exclusion Company (#2) and Atticare USA (#3) follow. We ranked 83 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in South San Francisco?
ContractorsRanked ranks 83 insulation contractors serving South San Francisco, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in South San Francisco are open 24/7?
25 ranked insulation contractors in South San Francisco post 24/7 hours. The highest-ranked are Attic Pros (#1), Attic Cleaning Services LLC (#6) and Pro Attic Restoration (#10). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in South San Francisco work on weekends?
62 of 83 ranked insulation contractors post Saturday hours and 47 post Sunday hours. The highest-ranked open Saturdays are Attic Pros (#1), Alley Cat - Rodent Exclusion Company (#2) and Atticare USA (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in South San Francisco?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for South San Francisco. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do South San Francisco insulation contractors have?
The median Google rating among 83 rated insulation contractors in South San Francisco is 5.0★, with a median of 24 reviews. Attic Pros has the most, 1,938 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside South San Francisco count in this ranking?
Yes, if they are within 25 mi of the South San Francisco city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for South San Francisco
- October 2026: CR Scores recalculated for 83 insulation contractors serving South San Francisco.
More insulation contractors and South San Francisco pages
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