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ContractorsRanked

Best Insulation Contractors in Oakland, CA (2026)

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

The short answer

  1. 1

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

  2. 3

    Best for emergencies (open 24/7): Reactic Restoration, posts 24/7 hours; ranked #3 of 106.

  3. 13

    Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 106 ranked; ranked #13.

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

106 Oakland insulation contractors are ranked here by CR Score, from 8 published factors. 30 are open 24/7, 72 open Saturdays and 57 open Sundays, based on posted hours. The median Google rating is 5.0★ across 106 rated businesses.

Most of this list also appears on the Insulation contractors in San Francisco ranking. See Insulation contractors in San Francisco

Top 10 insulation contractors in Oakland at a glance

Top 10 insulation contractors in Oakland at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Attic Pros944.8★ (1,938)Oakland24/7Overall
2American Attic895.0★ (219)OaklandSat · Sun—
3Reactic Restoration884.7★ (31)Oakland24/7Emergencies
4Attic Cleaning Services LLC874.9★ (76)Alameda, 10 mi away24/7—
5Alley Cat - Rodent Exclusion Company874.9★ (413)San Francisco, 8 mi awaySat · Sun · Evenings—
6Reactic Restoration865.0★ (57)Richmond, 13 mi away24/7—
7Rywen Insulation Inc.865.0★ (151)San Leandro, 7 mi awaySat · Sun—
8Atticare USA864.8★ (439)San Leandro, 8 mi awaySat · Sun · Evenings—
9Miller Attics865.0★ (46)Walnut Creek, 14 mi away24/7—
10EcoGuard Pest Management854.9★ (279)Dublin, 12 mi awaySat · Sun · Evenings—

The 106 best insulation contractors in Oakland, 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 Oakland

    #1 Attic Pros

    Based in Oakland

    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

    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

  7. #7 Rywen Insulation Inc.

    Based in San Leandro, 7 mi away

    86/100CR Score

    Ranked #7 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

  8. #8 Atticare USA

    Based in San Leandro, 8 mi away

    86/100CR Score

    Ranked #8 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

  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

  13. #13 Service Champions

    Based in Martinez, 17 mi away

    85/100CR Score

    Ranked #13 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

  18. #18 Alley Cat

    Based in Berkeley, 4 mi away

    83/100CR Score

    Ranked #18 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
    View profile for Alley Cat(510) 277-3303

  21. #21 Service Champions

    Based in Pleasanton, 21 mi away

    82/100CR Score

    Ranked #21 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

  23. #23 Johnson's Insulation

    Based in Oakland

    82/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “Insulation contractor”.

    • 4.8★ from 38 Google reviews
    Hours
    Mon–Sat 8 AM–6 PM · Sun closed
    Address
    1721 Broadway suit #201, Oakland, CA 94612
    View profile for Johnson's Insulation(510) 660-0455

  24. #24 Attic Star

    Based in Redwood City, 23 mi away

    81/100CR Score

    Ranked #24 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

  25. #25 EcoGuard Pest Management

    Based in Concord, 17 mi away

    81/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.8★ from 1,198 Google reviews, listed on Google as “Insulation contractor”.

    • 4.8★ from 1,198 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
    Address
    420 N Buchanan Cir STE 3, Pacheco, CA 94553
    View profile for EcoGuard Pest Management(925) 886-0535

How much do insulation contractors cost in Oakland?

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

How much do insulation contractors cost in Oakland?
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 Oakland insulation contractors

We scored 106 Oakland 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 Oakland 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 Oakland: frequently asked questions

Who is the best insulation contractor in Oakland?

By CR Score, the highest-ranked insulation contractor in Oakland, 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 Reactic Restoration (#3) follow. We ranked 106 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Oakland?

ContractorsRanked ranks 106 insulation contractors serving Oakland, CA. 4 of them are based in Oakland; the rest serve it from nearby towns. Counts are as of October 2026.

Which insulation contractors in Oakland are open 24/7?

30 ranked insulation contractors in Oakland post 24/7 hours. The highest-ranked are Attic Pros (#1), Reactic Restoration (#3) and Attic Cleaning Services LLC (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Oakland work on weekends?

72 of 106 ranked insulation contractors post Saturday hours and 57 post Sunday hours. The highest-ranked open Saturdays are Attic Pros (#1), American Attic (#2) and Reactic Restoration (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Oakland?

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

What Google rating do Oakland insulation contractors have?

The median Google rating among 106 rated insulation contractors in Oakland is 5.0★, with a median of 24 reviews. Service Champions has the most, 5,220 reviews, and ranks #13. 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 Oakland count in this ranking?

Yes, if they are within 25 mi of the Oakland 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 Oakland

  1. October 2026: CR Scores recalculated for 106 insulation contractors serving Oakland.

More insulation contractors and Oakland pages

Other trades in Oakland