Updated: May 09, 2026
Location and Projects
Address
P O BOX 5107, Diamond Bar, CA, 91765
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Kertland Roofing Inc
Kertland Roofing Inc, Diamond, Po Box 5107, Diamond Bar, CA (Employees: Helen Marie Kertland, John Oliver Kertland, and R L Bombardier) holds a Roofing, General Building license and 1 other license according to the California license board.
Their BuildZoom score of 112 ranks in the top 3% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Kertland Roofing Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Kertland Roofing Inc Contact Information
Phone Number: (909) 622-6927
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Address: P O BOX 5107, Diamond Bar, CA 91765
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Kertland Roofing Inc Diamond Bar
Quality
112
97th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Kertland Roofing Inc has a BuildZoom score of 112, which places them above 97% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
7 projects
|
2024 |
|
7 projects
|
2023 |
Our building permit records indicate that Kertland Roofing Inc has worked on at least
19.0 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
|
6 projects
|
Commercial Renovations |
|
19 projects
|
Roofing projects |
Analyzing permits over the last 4 years shows that Kertland Roofing Inc mostly works on
roofing project
and commercial renovation
projects.
Pricing
|
8 projects
|
< $5k |
|
11 projects
|
$5k-$20k |
The typical size of their permits is approximately $6,100. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
900sf reroof to remove existing and replace with comparable shingles new materials crrc# 0676-0138. garage not included
Valuation:
$6,100
Permit #:
B202501189
Status:
issued
Fee:
$165
Permit Type:
N/A
Building Type:
N/A
900sf reroof to remove existing and replace with comparable shingles new materials crrc# 0676-0138. garage not included
Valuation:
$6,100
Permit #:
B202501188
Status:
issued
Fee:
$165
Permit Type:
N/A
Building Type:
N/A
Tear off and re-roof with comparable shingles. house (1 350sf) and detached garage (450sf). gaf timberline hdz rs crrc#0676-0153 stone gray
Valuation:
$8,100
Permit #:
B202407139
Status:
final
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Remove existing roofing material replace wood and/or resheath as needed. reroof living units 1138 & 1140 w. philadelphia only (2600 sf) using crrc # 0676-0138 - gaf - hickory
Valuation:
$11,700
Permit #:
B202303567
Status:
final
Fee:
$235
Permit Type:
N/A
Building Type:
N/A
Remove existing roofing material replace wood and/or resheath as needed. reroof residential units 1170 & 1172 w. philadelphia (2800 sf total) first floor only using crrc #0676-0148 - gaf - timberline hdz - aged chestnut plus
Valuation:
$12,600
Permit #:
B202206296
Status:
final
Fee:
$249
Permit Type:
N/A
Building Type:
N/A
Remove existing roofing material. replace wood and/or resheath as needed. reroof units 2127 & 2129 s magnolia (1800 sf) using crrc # 0676-0138 - gaf - hickory
Valuation:
$8,100
Permit #:
B202303570
Status:
final
Fee:
$193
Permit Type:
N/A
Building Type:
N/A
Reroof town homes tear off old roof and apply timberline hdz crrc# 0676-0149
Valuation:
$10,500
Permit #:
B202500090
Status:
issued
Fee:
$221
Permit Type:
N/A
Building Type:
N/A
(building 1118 & 1120) tear off existing shingles down to deck and install new shingles using crrc#0676-0138 (2500 sq ft)
Valuation:
$12,000
Permit #:
B202508485
Status:
issued
Fee:
$257
Permit Type:
N/A
Building Type:
N/A
Remove existing roofing material at house 1250(sf) re-sheath as needed and install comparable. shingles crrc#0607-0138. shares roof with address 1108 w. philadelphia
Valuation:
$2,750
Permit #:
B202205294
Status:
final
Fee:
$108
Permit Type:
N/A
Building Type:
N/A
Partial (400 sq ft) apartment complex reroof-tear off comparable shingles install new shingles using crrc#0676-0149
Valuation:
$16,500
Permit #:
B202405411
Status:
final
Fee:
$306
Permit Type:
N/A
Building Type:
N/A
Remove existing material at house 1250(sf) re-sheath as needed and install shingles crrc# 0607-0138. shares roof with 1106 w. philadelphia b202205294
Valuation:
$1,250
Permit #:
B202205295
Status:
final
Fee:
$73
Permit Type:
N/A
Building Type:
N/A
Tear off and reroof house with attached garage gaf timberline hdz rs crrc #0676-0130a. (1600 sq ft)
Valuation:
$8,000
Permit #:
B202303391
Status:
issued
Fee:
$179
Permit Type:
N/A
Building Type:
N/A
Tear off and reroof 2 story (800 sq ft) section of roof with gaf timberline hdz-rs crrc #0676-0138
Valuation:
$2,500
Permit #:
B202303390
Status:
issued
Fee:
$108
Permit Type:
N/A
Building Type:
N/A
Partial (400 sq ft) apartment complex reroof-tear off comparable shingles install new shingles using crrc#0676-0149
Valuation:
$3,300
Permit #:
B202405410
Status:
final
Fee:
$122
Permit Type:
N/A
Building Type:
N/A
Remove existing roof material at apartment building (2500 sf) 2143 2147 s. magnolia st install comparable shingles crrc #0676-0147
Valuation:
$11,250
Permit #:
B202205549
Status:
final
Fee:
$235
Permit Type:
N/A
Building Type:
N/A
Reroof 2nd layer comp: house only
Valuation:
$4,800
Permit #:
B25-0350
Status:
final
Fee:
$148
Permit Type:
Reroof house only
Building Type:
N/A
Remove existing roofing material at four (4) unit apartment building 3400 sf and install comparable shingles crrc #0676-0149
Valuation:
$9,500
Permit #:
B202201259
Status:
final
Fee:
$213
Permit Type:
N/A
Building Type:
N/A
(800 sq ft) apartment complex reroof-tear off comparable shingles install new shingles using crrc#0676-0149
Valuation:
$3,600
Permit #:
B202405413
Status:
final
Fee:
$122
Permit Type:
N/A
Building Type:
N/A
(800 sq ft) apartment complex reroof-tear off comparable shingles install new shingles using crrc#0676-0149
Valuation:
$3,600
Permit #:
B202405412
Status:
final
Fee:
$122
Permit Type:
N/A
Building Type:
N/A
Tear off rock roof and install gaf comparable shingle (stone gray crrc 0676-0152a)
Valuation:
$9,500
Permit #:
B00-033-179
Status:
issued
Fee:
$306
Permit Type:
Roof
Building Type:
N/A
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Kertland Roofing Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Kertland Roofing Inc License info
Verified License
| License # | 510174 |
| Status | Active |
| State | California |
| Type | Roofing, General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Kertland Roofing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 415581 |
| Status | Inactive |
| State | California |
| Type | Roofing |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Kertland Roofing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
112
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
179
Permits
- Building permit records show that Kertland Roofing Inc has worked on 179 permitted projects.
Kertland Roofing Inc Employees
HK
Helen Marie Kertland
Officer
JK
John Oliver Kertland
Rmo/Ceo/Pres
RB
R L Bombardier
Rmo