Updated: Nov 02, 2025
Location and Projects
Address
6275 ROCKROSE DR, Newark, CA, 94560
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RG Roofing & General Building
RG Roofing & General Building, 6275 Rockrose Dr, Newark, CA (Owned by: Raymond Thomas Guillen) holds a Roofing license and 1 other license according to the California license board.
Their BuildZoom score of 111 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring RG Roofing & General Building, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
RG Roofing & General Building Contact Information
Phone Number: (559) 785-8121
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Address: 6275 ROCKROSE DR, Newark, CA 94560
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RG Roofing & General Building Newark
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
RG Roofing & General Building has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
9 projects
|
2025 |
|
10 projects
|
2024 |
|
9 projects
|
2023 |
|
15 projects
|
2022 |
Our building permit records indicate that RG Roofing & General Building has worked on at least
43.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
36 projects
|
Roofing projects |
Analyzing permits over the last 4 years shows that RG Roofing & General Building mostly works on
roofing project
projects.
Pricing
|
10 projects
|
$5k-$20k |
|
7 projects
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $20,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
RG Roofing & General Building Reviews
5 out of 5 stars, based on
3
reviews
-
By John R.November 19, 2020Kitchen remodel$26,000
-
By AlanJuly 9, 2012
Ray and his team have done multiple home improvements for our family over the last several years. While the results are always amazing, it's Ray's integrity and complete honesty that make him a trusted person in our home. We've always felt that Ray has been extremely fair in his pricing yet delivers premium results. It's an annual joke at our house, when our annual bonus check comes in my wife will have Ray at our house working on the next improvement before I get home. We're already planning our next project for Ray and his team.
-
By Cathy T.June 2, 2011
R G Roofing and General Building did a remodel for me. They took an old out dated kitchen and made it beautiful with all new cabinets, tile and appliances. Enlarged the opening from the kitchen into the family room and put in a custom entertainment unit that fills the entire wall. They also remodeled the bathroom with new cabinets and tile floor plus repaired walls, did crown molding and painted. When they were done it was a new house. They even repaired the roof where the air conditioner guy damaged it putting in a new unit. Everything they did turned out wonderful. Ray and his crew were great to work with, very knowledgable and had wonderful ideas on how to handle everything, they made it all very easy. I would recommend them to anyone.
Building Permits by RG Roofing & General Building
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove (e) roof and replacing with (n) comparable as of july 1 2024 roofing requirements for structures located within fire hazard severity zones or in a wildland-urban interface (wui) area shall also comply with section r337.5
Valuation:
N/A
Permit #:
DEV25-1318
Status:
final
Fee:
$1,310
Permit Type:
N/A
Building Type:
N/A
Multi-residential reroof to tear off existing roof down to the wood sheathing. install 1/2 cdx plywood. install certianteed presidential tl composition shingles required inspections: tearoff and final
Valuation:
$24,000
Permit #:
RER2025-00939
Status:
final
Fee:
$304
Permit Type:
Single family res...
Building Type:
N/A
108 131 or 132 inspection required prior to covering any work; (sub-case to rerc2023-00128) - remove existing roof down to the wood sheathing and cart away. furnish and install composition shingles. and tpo roofing squares on the breezeway
Valuation:
$50,000
Permit #:
RERC2023-00143
Status:
complete
Fee:
$800
Permit Type:
N/A
Building Type:
N/A
Duplex: tear off existing composition shingle roof. install all new roof flashings and 40yr composition roof shingles
Valuation:
$30,000
Permit #:
BLD25-00190
Status:
final
Fee:
$798
Permit Type:
N/A
Building Type:
N/A
Commercial reroof: tear off existing roofing. install single ply tpo on flat section and certainteed 40yr composition shingles over pitched roof inspections needed: tear off in-progress and final
Valuation:
$120,000
Permit #:
RER2022-02001
Status:
complete
Fee:
$857
Permit Type:
Multi-family resi...
Building Type:
N/A
Tear off existing wood shingles. install new underlayment and install new class b wood cedar shingles. install all new roof flashings. required inspections include tear off in progress and final. required inspections include tear off in progress and final
Valuation:
$90,000
Permit #:
RER2022-00888
Status:
complete
Fee:
$699
Permit Type:
Single family res...
Building Type:
N/A
Tear off existing roof down to the wood sheathing. install 1/2 cdx plywood. install one layer of gaf tiger paw roof underlayment. install 50 year composition shingles. furnish band install all new gutters and roof flashings
Valuation:
N/A
Permit #:
BLD2022-02434
Status:
final
Fee:
$461
Permit Type:
N/A
Building Type:
N/A
Tear off existing roof down to the wood sheathing. install new gutter and 40 year composition shingles. no plywood to be installed. 1900 sq ft
Valuation:
$17,000
Permit #:
BD-2023-289344
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing roof and install new certainteed landmark pro 4oyr composition roof
Valuation:
$60,000
Permit #:
BLD25-02321
Status:
final
Fee:
$3,314
Permit Type:
N/A
Building Type:
N/A
A single family residence reroof: shake to shingle
Valuation:
$20,000
Permit #:
RER2025-00902
Status:
final
Fee:
$281
Permit Type:
Single family res...
Building Type:
N/A
T/o; install 1/2 cdx pl cover w pres shingles
Valuation:
N/A
Permit #:
R2025-0041
Status:
final
Fee:
$666
Permit Type:
Roofing
Building Type:
N/A
Remove existing roof install 1/2"cdx plywood. go over with gaf tiger paw roof underlayment. install 50 certainteed composition shingles. required inspections include tear off roof nail in progress and final
Valuation:
$33,000
Permit #:
RER2021-01065
Status:
complete
Fee:
$361
Permit Type:
Single family res...
Building Type:
N/A
Tear off existing wood shake roof. install 1/2 cdx plywood. go over with certainteed presidential tl composition shingles
Valuation:
$24,000
Permit #:
RER2024-02291
Status:
final
Fee:
$304
Permit Type:
Single family res...
Building Type:
N/A
Replace existing windows; replace existing sliding patio door; install gutters; install fire door; repair water heater; replace laundry tub; install two handle laundry faucet replace outdoor laundry tub & garage laundry valves; install new bread board in kitchen; install new range hood exterior vented;
Valuation:
N/A
Permit #:
B21-02771
Status:
final
Fee:
$481
Permit Type:
N/A
Building Type:
N/A
Single family residence remove existing wood shake roof. install 1/2 cdx plywood and certainteed presidential tl composition shingles. inspection required: tear off and final
Valuation:
$20,500
Permit #:
RER2024-01909
Status:
final
Fee:
$284
Permit Type:
Single family res...
Building Type:
N/A
Re-roof
311 4th Ave, Half Moon Bay, CA, 94019
2024-07-08
Tear off existing composition shingle roof. install new certainteed presidential tl composition shingle roof
Valuation:
N/A
Permit #:
BLD2024-00885
Status:
final
Fee:
$350
Permit Type:
N/A
Building Type:
N/A
Remove existing roof down to the wood sheathing. install landmark 40yr composition shingles
Valuation:
$18,000
Permit #:
BLD24-02395
Status:
final
Fee:
$795
Permit Type:
N/A
Building Type:
N/A
Residential reroof of a home- remove existing composition roof. install new wood cedar shingles and new pipe column flashing and valley. required inspections: tear off in progress and final
Valuation:
$40,000
Permit #:
RER2020-00335
Status:
complete
Fee:
$403
Permit Type:
Single family res...
Building Type:
N/A
A residential reroof of a detached garage- remove existing composition roof install new wood cedar shingles and new pipe column flashing and valley. required inspections: tear off in progress and final
Valuation:
$10,000
Permit #:
RER2020-00337
Status:
complete
Fee:
$224
Permit Type:
Single family res...
Building Type:
N/A
New 30 x 18 wood patio attached to house w/torchdown roof cover & 4 can lights & one ceiling fan
Valuation:
$25,000
Permit #:
B226267
Status:
final
Fee:
$427
Permit Type:
N/A
Building Type:
N/A
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RG Roofing & General Building License info
Verified License
| License # | 770776 |
| Status | Active |
| State | California |
| Type | Roofing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for RG Roofing & General Building at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 671388 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2025.
Verify this license's status for RG Roofing & General Building at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | Accredited Surety & Casualty Company Inc |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
237
Permits
- Building permit records show that RG Roofing & General Building has worked on 237 permitted projects.
RG Roofing & General Building Employees
RG
Raymond Thomas Guillen
Owner
RG
Ricardo Maldonado Garcia
Sole Owner
I would definitely recommend Ray for any building or remodel projects. Him and his team did an amazing job on my kitchen remodel.