83 siding contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Los Altos: The Moulding Company, CR Score 88/100; 4.9★ from 290 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): OCA Builders, posts 24/7 hours; ranked #3 of 83.
Most-reviewed: Custom Exteriors, Inc, 208 Google reviews at 4.9★, the most of 83 ranked after The Moulding Company; ranked #23.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 Los Altos siding contractors are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 47 open Saturdays and 28 open Sundays, based on posted hours. The median Google rating is 5.0★ across 83 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | The Moulding Company | 88 | 4.9★ (290) | Santa Clara, 9 mi away | Sat | Overall |
| 2 | First Tier Exterior | 83 | 4.9★ (41) | Santa Clara, 7 mi away | Sat | — |
| 3 | OCA Builders | 83 | 5.0★ (49) | Los Gatos, 16 mi away | 24/7 | Emergencies |
| 4 | Palm Construction | 83 | 4.6★ (190) | San Lorenzo, 20 mi away | Sun · Evenings | — |
| 5 | South Bay Wood Restoration: Exterior Wood Staining Pros | 82 | 4.9★ (50) | San Jose, 16 mi away | Sat | — |
| 6 | BetterBuilt Builders | 82 | 5.0★ (25) | Milpitas, 12 mi away | Sun | — |
| 7 | Guacamaya Painting, Inc. | 81 | 4.8★ (25) | Campbell, 13 mi away | Sat · Evenings | — |
| 8 | Exclusively Roofing Inc. | 81 | 4.8★ (25) | San Jose, 11 mi away | Sat | — |
| 9 | GVD Renovations & Remodeling | 81 | 5.0★ (19) | San Jose, 13 mi away | Sat | — |
| 10 | KITA Roofing | 81 | 5.0★ (18) | San Jose, 12 mi away | Sat | — |
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.
Ranked #1 because of its Google rating and review volume: 4.9★ from 290 Google reviews, the most Google reviews on this list (290).
Based in Santa Clara, 7 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “Siding contractor”.
Based in Los Gatos, 16 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 49 Google reviews, open 24/7.
Based in San Lorenzo, 20 mi away
Ranked #4 because of its Google rating and trade focus: 4.6★ from 190 Google reviews, listed on Google as “Siding contractor”.
Based in San Jose, 16 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “Siding contractor”.
Based in Milpitas, 12 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Siding contractor”.
Based in Campbell, 13 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Siding contractor”.
Based in San Jose, 11 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Siding contractor”.
Based in San Jose, 13 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Siding contractor”.
Based in San Jose, 12 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Siding contractor”.
Based in San Francisco, 29 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Siding contractor”.
Based in Oakland, 30 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 14 Google reviews, listed on Google as “Siding contractor”.
Based in Santa Cruz, 30 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 36 Google reviews, open 24/7.
Based in Alameda, 25 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 105 Google reviews, 105 Google reviews.
Based in Pacifica, 27 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 134 Google reviews, listed on Google as “Siding contractor”.
Based in San Mateo, 17 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Siding contractor”.
Based in Campbell, 11 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 7 days a week.
Based in South San Francisco, 24 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 17 Google reviews, listed on Google as “Siding contractor”.
Based in Scotts Valley, 24 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Siding contractor”.
Based in Antioch, 20 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 44 Google reviews, open 7 days a week.
Based in Fremont, 11 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Siding contractor”.
Based in San Mateo, 17 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Siding contractor”.
Based in Pleasanton, 25 mi away
Ranked #23 because of its Google rating and review volume: 4.9★ from 208 Google reviews, 208 Google reviews.
Based in San Francisco, 33 mi away
Ranked #24 because of its Google rating and availability: 4.7★ from 19 Google reviews, open 24/7.
Based in Campbell, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Siding contractor”.
Typical prices in USD, adjusted for California with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Siding replacement | $5,730 | $11,950 | $18,280 | Per house: typical range of customer-reported projects. US national range × 1.03 Pacific factor (2025 Cost vs. Value Report) | October 2026 |
We scored 83 Los Altos siding 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.
| Factor | Weight | Computed from | In Los Altos data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |