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Best Roofers in Simi Valley, CA (2026)

1,230 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Simi Valley: August Roofing & Solar, CR Score 95/100; 4.9★ from 250 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): LocalRoofs, posts 24/7 hours; ranked #2 of 1,230.

  3. 2

    Most-reviewed: LocalRoofs, 396 Google reviews at 4.9★, the most of 1,230 ranked; ranked #2.

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

1,230 Simi Valley roofers are ranked here by CR Score, from 8 published factors. 331 are open 24/7, 839 open Saturdays and 782 open Sundays, based on posted hours. The median Google rating is 5.0★ across 1,230 rated businesses.

Top 10 roofers in Simi Valley at a glance

Top 10 roofers in Simi Valley at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1August Roofing & Solar954.9★ (250)Simi Valley24/7Overall
2LocalRoofs954.9★ (396)Camarillo, 10 mi away24/7Emergencies, Most reviews
3Alpine Roofing Guys955.0★ (312)Chatsworth, 12 mi away24/7—
4Global Roofing Specialist955.0★ (287)Calabasas, 11 mi away24/7—
5My Way Roofing944.9★ (352)Calabasas, 15 mi away24/7—
6NEMA Roofing Solutions935.0★ (248)Calabasas, 16 mi away24/7—
7NEMA Roofing Repair - Woodland Hills935.0★ (164)Agoura Hills, 12 mi away24/7—
8EcoSmart Development & Construction934.9★ (211)Los Angeles, 12 mi away24/7—
9First Roofing Contractor Inc.925.0★ (140)Calabasas, 16 mi away24/7—
10Preferred Roofing Inc924.9★ (144)Northridge, 13 mi away24/7—

The 1,230 best roofers in Simi Valley, 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.

  2. #2 LocalRoofs

    Based in Camarillo, 10 mi away

    95/100CR Score

    Ranked #2 because of its Google rating and review volume: 4.9★ from 396 Google reviews, the most Google reviews on this list (396).

    • 4.9★ from 396 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2550 Azurite Cir, Newbury Park, CA 91320
    View profile for LocalRoofs(805) 262-7460

  5. #5 My Way Roofing

    Based in Calabasas, 15 mi away

    94/100CR Score

    Ranked #5 because of its Google rating and availability: 4.9★ from 352 Google reviews, open 24/7.

    • 4.9★ from 352 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6717 Wynne Ave, Reseda, CA 91335
    View profile for My Way Roofing(866) 220-0314

  13. #13 NEMA Roofing

    Based in Oxnard, 23 mi away

    91/100CR Score

    Ranked #13 because of its Google rating and availability: 5.0★ from 143 Google reviews, open 24/7.

    • 5.0★ from 143 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    300 E Esplanade Dr, Oxnard, CA 93036
    View profile for NEMA Roofing(805) 977-5949

  16. #16 Claunch Roofing

    Based in Thousand Oaks, 7 mi away

    91/100CR Score

    Ranked #16 because of its Google rating and availability: 4.8★ from 73 Google reviews, open 24/7.

    • 4.8★ from 73 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1063 Valley High Ave, Thousand Oaks, CA 91362
    View profile for Claunch Roofing(805) 600-8810

  18. #18 Vekra Nom Roofers

    Based in Woodland Hills, 9 mi away

    90/100CR Score

    Ranked #18 because of its Google rating and availability: 4.9★ from 56 Google reviews, open 24/7.

    • 4.9★ from 56 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5962 Woodland View Dr, Woodland Hills, CA 91367
    View profile for Vekra Nom Roofers(424) 337-1110

  21. #21 Smart Roofing Inc

    Based in Woodland Hills, 12 mi away

    90/100CR Score

    Ranked #21 because of its Google rating and availability: 4.9★ from 60 Google reviews, open 24/7.

    • 4.9★ from 60 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    22120 Clarendon St #140, Woodland Hills, CA 91367
    View profile for Smart Roofing Inc(818) 805-0628

  25. #25 Atlas Roofing

    Based in West Hills, 11 mi away

    90/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.9★ from 192 Google reviews, listed on Google as “Roofing contractor”.

    • 4.9★ from 192 Google reviews
    Hours
    Mon–Thu 8 AM–8 PM · Fri–Sat 8 AM–6 PM · Sun 8 AM–8 PM
    Address
    6700 Fallbrook Ave STE. 100C, West Hills, CA 91307
    View profile for Atlas Roofing(866) 343-0686

Roofers 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 1,230 ranked roofers here; the rest are on their profiles.

roofers in Simi Valley, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26LA Roof Masters Calabasas905.0★ (39)11 mi
27EverGreen Roofing and Solar894.9★ (66)16 mi
28All In Roofing895.0★ (213)38 mi
29Generation894.9★ (41)11 mi
30Mega Roofing Inc.895.0★ (64)20 mi
31RL Remodeling894.7★ (68)12 mi
32Vision Roofing895.0★ (27)8 mi
33Specialists894.8★ (49)12 mi
34Gilbert Company894.9★ (37)12 mi
35Top Roofing Contractors894.9★ (65)11 mi
36Best Roof Repair894.8★ (62)16 mi
37LocalRoofs894.9★ (118)10 mi
38Echo Park Elite Roofing884.8★ (47)15 mi
39Superstar Roofing Inc - Simi Valley Roofers885.0★ (14)3 mi
40Hollywood Skyline Roofing884.8★ (58)18 mi
41All Things Roofing LA884.9★ (141)34 mi
42Bright Shield Roofing884.8★ (39)14 mi
43Clear Shield Roofers884.9★ (48)20 mi
44Glittering Lights Roofing884.8★ (61)20 mi
45Woody's Roofing884.9★ (176)38 mi
46CRD Construction884.9★ (52)In Simi Valley
47Green Advisor Inc.885.0★ (253)28 mi
48Top Home Remodeling Inc884.9★ (129)14 mi
49Best Roofing Specialists884.9★ (27)12 mi
50Top Roofing And Construction884.8★ (61)21 mi

Also serving Simi Valley

20 more roofers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked roofers serving Simi Valley
BusinessGoogle ratingDistance
Absolute Roofers & Construction5.0★ (1)In Simi Valley
All Roof & Window SystemsIn Simi Valley
American Roofer5.0★ (2)In Simi Valley
Brandt's Quality RoofingIn Simi Valley
Bumble Roofing of Los Angeles4.8★ (135)12 mi
Cal Roofing Inc5.0★ (1)In Simi Valley
Camacho Roofing Co5.0★ (1)In Simi Valley
DNA ROOFING Inc4.7★ (48)12 mi
Dunn Roofing Company4.0★ (1)In Simi Valley
ElitePitch Roofing Repair Service Simi ValleyIn Simi Valley
Erickson Roofing Co IncIn Simi Valley
Great Fox Roofers4.5★ (2)In Simi Valley
Martin's Roof Repair & Commercial Roofing5.0★ (2)In Simi Valley
PrimeCrest Roofing SolutionsIn Simi Valley
ProPeak Roofing WorksIn Simi Valley
Roof Land4.9★ (37)8 mi
SAMUEL ROOFING INC5.0★ (73)21 mi
SimiValley RoofProIn Simi Valley
The Crew Roofing5.0★ (1)In Simi Valley
VA Roofing4.0★ (1)In Simi Valley

How much do roofers cost in Simi Valley?

Typical prices in USD: adjusted for California where a published index exists, national otherwise. Each row names its basis.

How much do roofers cost in Simi Valley?
JobLowTypicalHighBasisChecked
Roof replacement$8,560$11,420$15,990Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range × 1.14 Pacific factor (2025 Cost vs. Value Report)October 2026
Roof repair$395$1,174$1,968Per repair: typical range of customer-reported jobs. US national rangeOctober 2026

How to check a roofer's license in California

In California, Contractors State License Board (CSLB) licenses C-39 Roofing contractor license.

Jobs of $1,000 or more in labor and materials (from January 1, 2025).

  1. Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

When to hire a roofer in California

Roofers are busiest from late spring to early fall, so booking in winter usually means shorter waits. After a big storm, get more than one quote and check the license or registration before signing.

How we ranked Simi Valley roofers

We scored 1,230 Simi Valley roofers 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 Simi Valley 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

Roofers in Simi Valley: frequently asked questions

Who is the best roofer in Simi Valley?

By CR Score, the highest-ranked roofer in Simi Valley, CA is August Roofing & Solar with a CR Score of 95/100. It has 4.9★ from 250 Google reviews. It is open 24/7. LocalRoofs (#2) and Alpine Roofing Guys (#3) follow. We ranked 1,230 roofers on 8 factors, last updated October 22, 2026.

How many roofers are there in Simi Valley?

ContractorsRanked ranks 1,230 roofers serving Simi Valley, CA. 6 of them are based in Simi Valley; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.

Which roofers in Simi Valley are open 24/7?

331 ranked roofers in Simi Valley post 24/7 hours. The highest-ranked are August Roofing & Solar (#1), LocalRoofs (#2) and Alpine Roofing Guys (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which roofers in Simi Valley work on weekends?

839 of 1,230 ranked roofers post Saturday hours and 782 post Sunday hours. The highest-ranked open Saturdays are August Roofing & Solar (#1), LocalRoofs (#2) and Alpine Roofing Guys (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a roofer's license in California?

In California, Contractors State License Board (CSLB) handles licensing and covers C-39 Roofing contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).

How much does roof replacement cost in Simi Valley?

Roof replacement typically costs $8,560 to $15,990, with $11,420 typical (Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range × 1.14 Pacific factor (2025 Cost vs. Value Report)). The range is adjusted for California. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Simi Valley roofers have?

The median Google rating among 1,230 rated roofers in Simi Valley is 5.0★, with a median of 15 reviews. LocalRoofs has the most, 396 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire a roofer in Simi Valley?

Roofers are busiest from late spring to early fall, so booking in winter usually means shorter waits. After a big storm, get more than one quote and check the license or registration before signing.

Update log for Simi Valley

  1. October 2026: CR Scores recalculated for 1,230 roofers serving Simi Valley.
  2. October 2026: 5 duplicate listings merged.

More roofers and Simi Valley pages

Other trades in Simi Valley