261 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South Pasadena: HomeShield Pest Control, CR Score 62/100; 5.0★ from 2,945 Google reviews; open Saturdays until 5 PM.
Best for emergencies (open 24/7): UltraSpan Insulation, posts 24/7 hours; ranked #2 of 261.
Most-reviewed: All City Animal Trapping, 732 Google reviews at 4.9★, the most of 261 ranked after HomeShield Pest Control; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
261 South Pasadena insulation contractors are ranked here by CR Score, from ten published factors. 40 are open 24/7, 187 open Saturdays and 165 open Sundays, based on posted hours. The median Google rating is 5.0★ across 261 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | HomeShield Pest Control | 62 | 5.0★ (2,945) | Los Angeles, 14 mi away | Sat · Evenings | Overall |
| 2 | UltraSpan Insulation | 60 | 4.9★ (20) | Pasadena, 2 mi away | 24/7 | Emergencies |
| 3 | Los Angeles Insulation Masters | 59 | 4.8★ (48) | Los Angeles, 9 mi away | 24/7 | — |
| 4 | Prime Climate Insulation Contractor | 59 | 4.9★ (15) | Los Angeles, 4 mi away | 24/7 | — |
| 5 | Insulation Masters LA | 59 | 4.8★ (97) | Los Angeles, 8 mi away | Sat · Sun | — |
| 6 | All City Animal Trapping | 59 | 4.9★ (732) | Carson, 23 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | Insulation Labs | 59 | 4.9★ (413) | Van Nuys, 20 mi away | Sat · Sun · Evenings | — |
| 8 | Beverly Hills Services | 58 | 4.8★ (61) | Beverly Hills, 14 mi away | 24/7 | — |
| 9 | Attic Projects | 58 | 5.0★ (46) | Glendale, 9 mi away | Sat · Sun | — |
| 10 | Pacific Shield Insulation | 58 | 4.9★ (13) | Los Angeles, 7 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 review volume: 5.0★ from 2,945 Google reviews, the most in South Pasadena.
Based in Pasadena, 2 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 9 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 48 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 4 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 97 Google reviews, listed on Google as “Insulation contractor”.
Based in Carson, 23 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 732 Google reviews, listed on Google as “Insulation contractor”.
Based in Van Nuys, 20 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 413 Google reviews, listed on Google as “Insulation contractor”.
Based in Beverly Hills, 14 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 61 Google reviews, listed on Google as “Insulation contractor”.
Based in Glendale, 9 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 7 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Alhambra, 2 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Alhambra, 2 mi away
Ranked #12 because of its Google rating and trade focus: 4.6★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based in Silver Lake, 2 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Rosemead, 6 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 17 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 136 Google reviews, listed on Google as “Insulation contractor”.
Based in Beverly Hills, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 64 Google reviews, listed on Google as “Insulation contractor”.
Based in Castaic, 19 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Insulation contractor”.
Based in Burbank, 10 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 60 Google reviews, listed on Google as “Insulation contractor”.
Based in Azusa, 14 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Insulation contractor”.
Based in Bell, 13 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Angeles, 10 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based in Montebello, 8 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based in Arcadia, 8 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based in Hollywood, 11 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based in Fullerton, 20 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 135 Google reviews, listed on Google as “Insulation contractor”.
#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 261 ranked insulation contractors here; the rest are on their profiles.
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 |
|---|---|---|
| AAA Roofing and Insulation Services | 5.0★ (2) | 16 mi |
| Bob Mezzo Plastering | 5.0★ (2) | 22 mi |
| Contractor Monrovia Redzone | 5.0★ (2) | 9 mi |
| Control | 5.0★ (2) | 18 mi |
| ED Remodeling Contractors | 5.0★ (1) | In South Pasadena |
| Kiko's insulation corporation | 5.0★ (2) | 21 mi |
| LA Insulate | In South Pasadena | |
| Leos Insulation | 5.0★ (2) | 18 mi |
| Lone Star | 5.0★ (2) | 21 mi |
| Master Insulation & AC | 5.0★ (2) | 16 mi |
| NDM Insulation | 5.0★ (2) | 23 mi |
| Pure Eco Insulation | 5.0★ (2) | 22 mi |
| QUALITY FOAM | 5.0★ (2) | 12 mi |
| Smart Budget Insulation of Burbank | 3.0★ (2) | 10 mi |
| Smart Value Insulation | 5.0★ (2) | 9 mi |
| South Gate Insulation Pros | 5.0★ (2) | 12 mi |
| The Insulation Experts | 5.0★ (2) | 13 mi |
| Titan Insulation - Pasadena | 5.0★ (2) | 2 mi |
| Vasitos Construction | 5.0★ (2) | 13 mi |
| Western Industrial Ceramics | 5.0★ (2) | 13 mi |
National price ranges in USD, not adjusted for South Pasadena. 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 |
We scored 261 South Pasadena 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 Pasadena 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 |