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ContractorsRanked

Best Insulation Contractors in San Leandro, CA (2026)

123 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in San Leandro: Attic Pros, CR Score 94/100; 4.8★ from 1,938 Google reviews; open 24/7.

  2. 5

    Best for emergencies (open 24/7): Pro Attic Restoration, posts 24/7 hours; ranked #5 of 123.

  3. 12

    Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 123 ranked; ranked #12.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

123 San Leandro insulation contractors are ranked here by CR Score, from 8 published factors. 38 are open 24/7, 86 open Saturdays and 72 open Sundays, based on posted hours. The median Google rating is 4.9★ across 123 rated businesses.

Top 10 insulation contractors in San Leandro at a glance

Top 10 insulation contractors in San Leandro at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Attic Pros944.8★ (1,938)Oakland, 2 mi away24/7Overall
2American Attic895.0★ (219)Oakland, 1 mi awaySat · Sun—
3Atticare USA884.8★ (439)San LeandroSat · Sun · Evenings—
4Rywen Insulation Inc.885.0★ (151)San LeandroSat · Sun—
5Pro Attic Restoration884.9★ (48)Hayward, 5 mi away24/7Emergencies
6EcoGuard Pest Management874.9★ (279)Dublin, 5 mi awaySat · Sun · Evenings—
7Reactic Restoration864.7★ (31)Oakland, 6 mi away24/7—
8Alamo Attic Insulation Pro864.9★ (94)Alamo, 11 mi away24/7—
9Miller Attics865.0★ (46)Walnut Creek, 14 mi away24/7—
10Alley Cat - Rodent Exclusion Company854.9★ (413)San Francisco, 15 mi awaySat · Sun · Evenings—

The 123 best insulation contractors in San Leandro, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in San Leandro

    #1 Attic Pros

    Based in Oakland, 2 mi away

    94/100CR Score

    Ranked #1 because of its Google rating and availability: 4.8★ from 1,938 Google reviews, open 24/7.

    • 4.8★ from 1,938 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    718 Douglas Ave, Oakland, CA 94603
    View profile for Attic Pros(800) 543-0382

  2. #2 American Attic

    Based in Oakland, 1 mi away

    89/100CR Score

    Ranked #2 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
    View profile for American Attic(800) 461-2017

  3. #3 Atticare USA

    Based in San Leandro

    88/100CR Score

    Ranked #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
    View profile for Atticare USA(866) 647-2811

  4. #4 Rywen Insulation Inc.

    Based in San Leandro

    88/100CR Score

    Ranked #4 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
    View profile for Rywen Insulation Inc.(415) 770-0342

  9. #9 Miller Attics

    Based in Walnut Creek, 14 mi away

    86/100CR Score

    Ranked #9 because of its Google rating and availability: 5.0★ from 46 Google reviews, open 24/7.

    • 5.0★ from 46 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    161 N Civic Dr, Walnut Creek, CA 94596
    View profile for Miller Attics(510) 447-6507

  12. #12 Service Champions

    Based in Martinez, 20 mi away

    84/100CR Score

    Ranked #12 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews, the most Google reviews on this list (5,220).

    • 4.9★ from 5,220 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    261 Arthur Rd, Martinez, CA 94553
    View profile for Service Champions(925) 281-0532

  14. #14 Service Champions

    Based in Livermore, 20 mi away

    84/100CR Score

    Ranked #14 because of its Google rating and availability: 4.9★ from 4,721 Google reviews, open 24/7.

    • 4.9★ from 4,721 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    207 Boeing Ct, Livermore, CA 94551
    View profile for Service Champions(925) 966-1366

  15. #15 Service Champions

    Based in Pleasanton, 13 mi away

    84/100CR Score

    Ranked #15 because of its Google rating and availability: 4.8★ from 2,337 Google reviews, open 24/7.

    • 4.8★ from 2,337 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7020 Commerce Dr, Pleasanton, CA 94588
    View profile for Service Champions(925) 248-3458

  18. #18 Attic Star

    Based in Redwood City, 18 mi away

    83/100CR Score

    Ranked #18 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
    View profile for Attic Star(800) 444-8180

  22. #22 Service Champions

    Based in Livermore, 20 mi away

    82/100CR Score

    Ranked #22 because of its Google rating and availability: 4.9★ from 1,331 Google reviews, open 24/7.

    • 4.9★ from 1,331 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    96 Rickenbacker Cir, Livermore, CA 94551
    View profile for Service Champions(925) 397-4867

  24. #24 Attic Elite

    Based in Newark, 15 mi away

    82/100CR Score

    Ranked #24 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
    View profile for Attic Elite(888) 805-8848

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 123 ranked insulation contractors here; the rest are on their profiles.

insulation contractors in San Leandro, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Reactic Restoration825.0★ (11)19 mi
27NorCal Roofing & Construction825.0★ (24)In San Leandro
28Regal Insulation Services825.0★ (31)14 mi
29Attic Solutions - Rodent Proofing & Insulation Services814.8★ (39)13 mi
30Attic Insulation Patrol813.4★ (5)12 mi
31Alley Cat814.9★ (1,071)10 mi
32EcoGuard Pest Management814.8★ (1,198)19 mi
33Next Edge Insulation815.0★ (3)16 mi
34Freschi Service Experts814.8★ (1,046)21 mi
35Insulation Labs815.0★ (6)7 mi
36Attic Perfect814.1★ (78)In San Leandro
37Daly City Restoration804.0★ (4)17 mi
38Trap Guard805.0★ (13)22 mi
39American Attics805.0★ (89)15 mi
40Eagle Air804.9★ (549)24 mi
41Patriots Restoration805.0★ (6)11 mi
42The Bay Area Insulation805.0★ (9)13 mi
43Spotlight Roofing Inc805.0★ (66)15 mi
44Attic Repair Guys805.0★ (23)20 mi
45Reactic Restoration794.9★ (63)13 mi
46Johnson's Insulation794.8★ (38)8 mi
47Delta Spray Foam Insulation795.0★ (34)23 mi
48Attic Cali - Rodent Proofing & Insulation Pros794.7★ (23)18 mi
49INSULATION ALLIANCE795.0★ (33)12 mi
50911 Attic795.0★ (3)18 mi

Also serving San Leandro

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.

Unranked insulation contractors serving San Leandro
BusinessGoogle ratingDistance
Adams Field Services LLC.3.0★ (2)24 mi
Airseal Inc3.0★ (2)20 mi
American Building Services IncIn San Leandro
Attic Solutions3.0★ (2)16 mi
Attic Wise Cleaning5.0★ (2)23 mi
Bear Insulation and Services5.0★ (2)23 mi
Brandon's Attic Control5.0★ (2)5 mi
Brick & Hammer5.0★ (2)14 mi
Eagle Systems International IncIn San Leandro
Emerald Insulation & Acoustical Inc.5.0★ (2)15 mi
Insulation & Air Duct Crew5.0★ (2)6 mi
My Steam Rug & Sofa Cleaning5.0★ (2)21 mi
Panda Heating & Cooling3.5★ (2)2 mi
Peak Core Insulation5.0★ (2)9 mi
PRO ATTIC RESTORATION5.0★ (2)5 mi
Quality Pro Guard1.0★ (2)20 mi
San Leanrdo Roofing5.0★ (5)In San Leandro
Soundproofing Remodelers San Francisco Bay Area5.0★ (2)19 mi
United Acoustics5.0★ (2)In San Leandro
West Coast Sound Solutions3.0★ (2)In San Leandro

How much do insulation contractors cost in San Leandro?

National price ranges in USD, not adjusted for San Leandro. Each row names its basis and the month we checked it.

How much do insulation contractors cost in San Leandro?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked San Leandro insulation contractors

We scored 123 San Leandro insulation contractors 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn San Leandro data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in San Leandro: frequently asked questions

Who is the best insulation contractor in San Leandro?

By CR Score, the highest-ranked insulation contractor in San Leandro, CA is Attic Pros with a CR Score of 94/100. It has 4.8★ from 1,938 Google reviews. It is open 24/7. American Attic (#2) and Atticare USA (#3) follow. We ranked 123 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in San Leandro?

ContractorsRanked ranks 123 insulation contractors serving San Leandro, CA. 4 of them are based in San Leandro; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in San Leandro are open 24/7?

38 ranked insulation contractors in San Leandro post 24/7 hours. The highest-ranked are Attic Pros (#1), Pro Attic Restoration (#5) and Reactic Restoration (#7). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in San Leandro work on weekends?

86 of 123 ranked insulation contractors post Saturday hours and 72 post Sunday hours. The highest-ranked open Saturdays are Attic Pros (#1), American Attic (#2) and Atticare USA (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in San Leandro?

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 San Leandro. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do San Leandro insulation contractors have?

The median Google rating among 123 rated insulation contractors in San Leandro is 4.9★, with a median of 23 reviews. Service Champions has the most, 5,220 reviews, and ranks #12. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside San Leandro count in this ranking?

Yes, if they are within 25 mi of the San Leandro 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 San Leandro

  1. October 2026: CR Scores recalculated for 123 insulation contractors serving San Leandro.
  2. October 2026: 1 duplicate listing merged.

More insulation contractors and San Leandro pages

Other trades in San Leandro