Updated: Apr 06, 2026
Location and Projects
Address
7844 CREST AVE, Oakland, CA, 94605
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Mnj Roofing Inc
Mnj Roofing Inc, 7844 Crest Ave, Oakland, CA (Employees: Chul Jun Song, Myung Jun Song, and Sang Mee Song) holds a Electrical, Roofing license and 2 other licenses according to the California license board.
Their BuildZoom score of 108 ranks in the top 5% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mnj Roofing Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mnj Roofing Inc Contact Information
Phone Number: (510) 635-0257
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Address: 7844 CREST AVE, Oakland, CA 94605
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Mnj Roofing Inc Oakland
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mnj Roofing Inc has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.
Activity
|
10 projects
|
2025 |
|
15 projects
|
2024 |
|
17 projects
|
2023 |
Our building permit records indicate that Mnj Roofing Inc has worked on at least
42.0 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
|
42 projects
|
Roofing projects |
Analyzing permits over the last 4 years shows that Mnj Roofing Inc mostly works on
roofing project
projects.
Pricing
|
26 projects
|
$5k-$20k |
|
10 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
The typical size of their permits is approximately $16,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
1. the new roof shall be laid in a composition shingle roof method in accordance with manufacturer’s specification.roof shall be installed in a neat and ordinary fashion 2. remove existing main old roof completely and rottten wood appear on roof surface shall be replaced ( on a time $85 hr + material basis) 3. any loose or standing nails would be removed or renailed to provide as sm... see more
Valuation:
$20,400
Permit #:
RW23-0070
Status:
final
Fee:
$473
Permit Type:
N/A
Building Type:
N/A
Remove existing old shingle roof install new lifetime shingle roof class a **this project is residential not commercial**
Valuation:
$22,000
Permit #:
RW25-0184
Status:
issued
Fee:
$393
Permit Type:
N/A
Building Type:
N/A
Remove existing old roofs. install 1/2inch plywood. install composition shingle
Valuation:
$26,000
Permit #:
RW25-0204
Status:
issued
Fee:
$636
Permit Type:
N/A
Building Type:
N/A
The shaded portion of the roof near chestnut street in the attached picture will be installed with a new pvc roof system. approx.2 000 sq.ft remove existing roof first and install den's deck and pvc roof
Valuation:
$25,000
Permit #:
RW23-0194
Status:
issued
Fee:
$336
Permit Type:
N/A
Building Type:
N/A
Remove old shingles and install new class a lifetime shingles 18 squares
Valuation:
$13,500
Permit #:
BL-ROOF-2025-00214
Status:
complete
Fee:
$558
Permit Type:
N/A
Building Type:
N/A
Tearing off and reroof w shingles. 15sqs. georgetown grey color
Valuation:
$13,500
Permit #:
BL-ROOF-2025-00218
Status:
issued
Fee:
$558
Permit Type:
N/A
Building Type:
N/A
Remove (e) old roof install new waterproofing materials and composition shingles. no hot work
Valuation:
$36,000
Permit #:
202506309777
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
08 - club
Remove existing old shingle new underlayment
Valuation:
$21,000
Permit #:
B25-00893
Status:
final
Fee:
$583
Permit Type:
Reroof
Building Type:
N/A
Re-roofing. no hot torch work about 48 squares
Valuation:
$84,000
Permit #:
202412036007
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remove existing old roof install new shingle
Valuation:
$14,000
Permit #:
RW25-0069
Status:
final
Fee:
$349
Permit Type:
N/A
Building Type:
N/A
Overlay shingle roof remove existing roof sheet metals. and install new metals existing composition shingle remain
Valuation:
$16,000
Permit #:
B2024-04477
Status:
issued
Fee:
$633
Permit Type:
N/A
Building Type:
N/A
Tear off existing roof; install new composition shingle color: burnt sienna “it is the permittee’s obligation and responsibility to ensure that all work associated with this permit complies with all current orders of the health officer of the county of san mateo related to the novel coronavirus disease 2019 (covid-19). the county of san mateo assumes no responsibility for work perform... see more
Valuation:
$12,000
Permit #:
BLD2020-01518
Status:
final
Fee:
$215
Permit Type:
N/A
Building Type:
N/A
Minor permit for reroof hvac water heater seismic gas shut-off valve. (r-3 occupancies only)
2022-06-24
Remove existing old roof. install 1/2 inch plywood install lifetime shingle solaris energy saving material class “a” 1700 sq
Valuation:
$12,000
Permit #:
B2022-02893
Status:
issued
Fee:
$463
Permit Type:
N/A
Building Type:
N/A
Remove existing old roofs install new single ply modified bitumen roof install rain gutters
Valuation:
$14,500
Permit #:
RW23-0082
Status:
issued
Fee:
$278
Permit Type:
N/A
Building Type:
N/A
Remove existing old shingle roof install new 40 years composition shingle 18sq, ft. class ‘a” roof
Valuation:
$16,000
Permit #:
RW24-0132
Status:
final
Fee:
$286
Permit Type:
N/A
Building Type:
N/A
Remove existing old roof. install 1/2 inch plywood. install composition shingle
Valuation:
$30,000
Permit #:
RW23-0172
Status:
final
Fee:
$523
Permit Type:
N/A
Building Type:
N/A
Remove existing old roofs install1/2 inch plywood install shingle roof
Valuation:
$20,000
Permit #:
RW25-0408
Status:
issued
Fee:
$617
Permit Type:
N/A
Building Type:
N/A
Refer to ble2025-00109 tear off and reroof with class a comparable shingles 18 sq
Valuation:
$7,578
Permit #:
BLD2025-01767
Status:
final
Fee:
N/A
Permit Type:
Simple permit
Building Type:
N/A
Remove existing old shingle. instal new class”a” composition shingles. **30 squares** **cool roof or cool roof exempt required at final inspectin**
Valuation:
N/A
Permit #:
BIRR21-008102
Status:
final
Fee:
$264
Permit Type:
N/A
Building Type:
N/A
Remove existing tile roof. install class"a presidential tl shingle roof
Valuation:
$58,000
Permit #:
BLD2025-01126
Status:
complete
Fee:
$308
Permit Type:
N/A
Building Type:
N/A
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Projects
Mnj Roofing Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Mnj Roofing Inc License info
Verified License
| License # | 831633 |
| Status | Active |
| State | California |
| Type | Electrical, Roofing |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Mnj Roofing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 621857 |
| Status | Active |
| City | South San Francisco |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of January, 2018. Check the current license status of Mnj Roofing Inc with the The City of South San Francisco, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 621857 |
| Status | Inactive |
| State | California |
| Type | Electrical, Roofing |
- 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 Mnj Roofing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
432
Permits
- Building permit records show that Mnj Roofing Inc has worked on 432 permitted projects.
Mnj Roofing Inc Employees
CS
Chul Jun Song
Officer
MS
Myung Jun Song
Rmo / Ceo / Pres
SS
Sang Mee Song
Officer