Updated: May 15, 2026
Location and Projects
Address
23575 CABOT BLVD 207, Hayward, CA, 94545
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RJ Construction Photos
RJ Construction
Founded in Aug. 2006, R.J. Construction is a family owned and operated business. Specializing in Alumawood Patio Covers, Patio Enclosures, Sun-rooms & Garden Rooms.
With over 20 years of experience, at R.J. Construction we dedicate ourselves to quality workmanship. We will work with your distinct features customizing your structure to fit your needs.
Therefore building a patio you will love for years to come. Your structure will be superior among the rest, for we take pride in the design, beauty, and craftsmanship: with us, it’s in the detail.
From BuildZoom: RJ Construction, 23575 Cabot Blvd, Hayward, CA (Employees: Jiajun Ruan, Jiajun Ruan, and Robert Allen Hooper) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 107 ranks in the top 6% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring RJ Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
RJ Construction Services
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RJ Construction Contact Information
Phone Number: (650) 333-0068
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Address: 23575 CABOT BLVD 207, Hayward, CA 94545
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RJ Construction Hayward
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
RJ Construction has a BuildZoom score of 107, which places them above 94% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that RJ Construction has worked on at least
3.0 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.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
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.
Interior remodel to existing kitchen master bathroom. bathroom # 2 bathroom #3. no exterior changes
Valuation:
$24,680
Permit #:
21CP03820
Status:
final
Fee:
$1,362
Permit Type:
N/A
Building Type:
N/A
Interior 109 sq. ft. master bedroom and bathroom remodel and replace window
Valuation:
$3,364
Permit #:
21CP00792
Status:
final
Fee:
$902
Permit Type:
N/A
Building Type:
N/A
Addition of conventional non-bearing interior walls relocating existing grills light fixtures and adding new interior doors to new partitions
Valuation:
$13,000
Permit #:
16CP02369
Status:
final
Fee:
$4,164
Permit Type:
N/A
Building Type:
N/A
Construction of attached aluminum solid roof patio cover (147 sf)
Valuation:
$6,000
Permit #:
RESB-04-23-59912
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construction of a 251 sq ft master bedroom closet office and master bathroom addition and 13 sq. ft. mechanical closet addition to existing single-family dwelling. no grading
Valuation:
$35,344
Permit #:
18CP00608
Status:
final
Fee:
$3,954
Permit Type:
N/A
Building Type:
N/A
To clear 18ce00104: relocate existing furnace to the exterior of the house and install new bryant air conditioning unit over new 5 6 x 1'2 concrete slab. no new ducting proposed
Valuation:
$5,000
Permit #:
18CP01409
Status:
final
Fee:
$282
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel and replace four (4) windows same size single to double pane
Valuation:
$84,000
Permit #:
19CP00958
Status:
final
Fee:
$772
Permit Type:
N/A
Building Type:
N/A
To partially clear code enforcement case 18ce00111; remove 100 sq ft rotten deck and replace it with 17 sq ft balcony. repair the leak on the roof
Valuation:
$3,000
Permit #:
18CP01871
Status:
final
Fee:
$783
Permit Type:
N/A
Building Type:
N/A
Interior remodel: expand master bedroom addition 1/2 bathroom, relocate furnace & water heater no new sqaure footage
Valuation:
$50,000
Permit #:
201900812
Status:
complete
Fee:
$2,036
Permit Type:
Residential remodel
Building Type:
N/A
Interior remodel: expand master bedroom addition 1/2 bathroom, relocate furnace & water heater no new sqaure footage
Valuation:
$50,000
Permit #:
201900812
Status:
issued
Fee:
$2,036
Permit Type:
Residential remodel
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2019-02-25
Plumbing related to bathroom remodel at existing condo. unit #836
Valuation:
N/A
Permit #:
P1900342
Status:
expired
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2019-03-26
Electrical related to bathroom remodel at existing condo. unit #836
Valuation:
N/A
Permit #:
E1900565
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Stop work- repair dry rot damage to deck. remove and replace 140 sf
Valuation:
$35,000
Permit #:
B18-0612
Status:
final
Fee:
$1,968
Permit Type:
N/A
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2021-02-24
Bathroom remodel at existing condo. unit #836
Valuation:
$8,000
Permit #:
B1900850
Status:
expired
Fee:
$630
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
18CP00608-REV1
Status:
final
Fee:
$97
Permit Type:
N/A
Building Type:
N/A
New 696sf attached adu with dedicated water gas and electrical meters; 357sf bedroom w full bathroom and w/i closet; delete 1 bedroom; kitchen remodel; remove unpermitted kitchen in garage to bring garage to original garage use; install washer/dryer sink and 2 wh in garage
Valuation:
$150,000
Permit #:
B18-1972
Status:
final
Fee:
$20,611
Permit Type:
N/A
Building Type:
N/A
Remodel 252 square foot kitchen laundry and dining room. remove fireplace and non bearing walls addition new structural supports. no change in water fixture count and no exterior changes
Valuation:
$75,000
Permit #:
20CP00351
Status:
final
Fee:
$324
Permit Type:
N/A
Building Type:
N/A
Residential remodel: bathroom and kitchen remodel replace plumbing electrical and mechanical. 450 s.ft siding replace water heater new washer
Valuation:
$10,000
Permit #:
BLD2017-02476
Status:
final
Fee:
N/A
Permit Type:
Residential remodel
Building Type:
N/A
43 sf addition & 789 sf int.remodel; addition to enlarge kitchen & family room create bedroom #3 create (n) mstr bathroom and add'l full bathroom
Valuation:
$100,000
Permit #:
1702150047
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace roof structure over garage/patio (trusses); bathroom remodel (72 sq ft; install (3) skylights; reroof residence composition (2342 sq ft) revision #1 truss calcs w revision to install 2x6@ 24"o.c @ patio- issd 7/23/2013 file/plans in boxes in flea room for february 2014
Valuation:
$20,000
Permit #:
13050070
Status:
Closed
Fee:
$1,919
Permit Type:
Single family dwe...
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
RJ Construction License info
Verified License
| License # | 1016237 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Partnership, Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for RJ Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 492563 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Partnership, Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for RJ Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 315088 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Partnership, Sole Ownership |
- 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 RJ Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
96
Permits
- Building permit records show that RJ Construction has worked on 96 permitted projects.
RJ Construction Employees
JR
Jiajun Ruan
Sole Owner
JR
Jiajun Ruan
Sole Owner
RH
Robert Allen Hooper
Sole Owner
RM
Robert Jay Merslich
Sole Owner