Updated: Apr 20, 2026
Location and Projects
Address
1445 ISABELLE AVE, Mountain View, CA, 94040
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Wei Jaw Jeng Construction
Wei Jaw Jeng, 1445 Isabelle Ave, Mountain View, CA (Employees: Max Jay Jeng and Michael Tsu Wei Jeng) holds a General Building license and 2 other licenses according to the California license board.
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Wei Jaw Jeng, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Wei Jaw Jeng Services
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Wei Jaw Jeng Contact Information
Phone Number: (408) 529-2011
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Address: 1445 ISABELLE AVE, Mountain View, CA 94040
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Scope of work: - addition of (247 sq ft) sq. ft. to addition living room and dining room. - remodeling and expanding the kitchen remodel two bathrooms and addition new laundry room. -convert (e) garage to habitable area (420 sq ft) to addition entry bedroom and two bathrooms. -addition of (n) attached garage (379 sq ft)
Valuation:
$86,083
Permit #:
2017 044391 RS
Status:
issued
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
Scope of work includes: - addition of 699 sq. ft. to the rear of the house to expand the kitchen family room addition of a half bathroom and a master suite. - demolish the existing front porch and addition of a 154 sq. ft. covered front porch
Valuation:
$71,228
Permit #:
2017 039273 RS
Status:
final
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
422 sf addition to include master bedroom relocation/cap off of existing bathroom to create master bathroom and walk-in closet. raise the service pole per pge
Valuation:
N/A
Permit #:
BLD2019-03146
Status:
complete
Fee:
$2,618
Permit Type:
N/A
Building Type:
N/A
Wang residence: addition of 1 168sf of living space
Valuation:
N/A
Permit #:
B-BP18-0494
Status:
final
Fee:
$5,802
Permit Type:
Raa-addition/remodel
Building Type:
N/A
Wang residence:removal of (253sqft) tool shed
Valuation:
$1,500
Permit #:
B-DM21-0027
Status:
final
Fee:
$573
Permit Type:
Misc. Demolish
Building Type:
N/A
(n) guest house 896 sf
Valuation:
$125,000
Permit #:
B16-0776
Status:
final
Fee:
$9,813
Permit Type:
N/A
Building Type:
N/A
Addition of 130 sf to create a new home office with a closet
Valuation:
N/A
Permit #:
BLD2020-01997
Status:
complete
Fee:
$943
Permit Type:
N/A
Building Type:
N/A
Master: 201701370. change hvac from wall-mount furnace toheat pump mini split system
Valuation:
N/A
Permit #:
201803970
Status:
issued
Fee:
$326
Permit Type:
Revision permit
Building Type:
N/A
Master: 201701370. change hvac from wall-mount furnace toheat pump mini split system
Valuation:
N/A
Permit #:
201803970
Status:
issued
Fee:
$326
Permit Type:
Revision permit
Building Type:
N/A
New detached adu
Valuation:
N/A
Permit #:
BLD2018-00524
Status:
issued
Fee:
$6,662
Permit Type:
N/A
Building Type:
N/A
New single family dwelling w attached 2-car garage - 2 story 4 bed 4 full bathroom 3196 liv sf 420 sf garage resubmittal # 1 - jpb - 06/14/2016 - in response to plan check comments from all departments resubmittal #2 azs 07-18-16 - response to plan check comments from all depts resubmittal # 3 - jpb - 07/29/2016 - location and details on the soldier beam wall at the rear of the proper... see more
Valuation:
N/A
Permit #:
BLD2016-00555
Status:
final
Fee:
$27,443
Permit Type:
N/A
Building Type:
N/A
Scope of work addition 221 sq/ft onto existing first floor of single family residence. addition 1070.8 sq/ft to second story. new second story. addition of 51 sq/ft first floor in form of covered porch
Valuation:
$131,655
Permit #:
2016 139500 RS
Status:
issued
Fee:
N/A
Permit Type:
Single family
Building Type:
N/A
Addition 619 sf for new adu to include 2 bedrooms kitchen/living area and bathroom
Valuation:
N/A
Permit #:
BLD2020-01964
Status:
complete
Fee:
$3,597
Permit Type:
N/A
Building Type:
N/A
Demolish portion of (e) dwelling demolish 144 sf storage unit demolish (e) swimming pool with engineered fill
Valuation:
N/A
Permit #:
BLD2018-00933
Status:
final
Fee:
$323
Permit Type:
N/A
Building Type:
N/A
Addition of 460 sq ft at the front of the home that includes two bedrooms and a bathroom
Valuation:
N/A
Permit #:
BLD2018-05585
Status:
complete
Fee:
$2,733
Permit Type:
N/A
Building Type:
N/A
Building - interior tenant improvement. for a coffee and tea restaurant. adding a kitchen and dining area. (e) air conditioning unit to remain. (e) ceiling to remain. (e) restrooms to remain. (rada) ****wui area****
Valuation:
N/A
Permit #:
BLD2015-04358
Status:
final
Fee:
$3,425
Permit Type:
N/A
Building Type:
N/A
New one story single family residence 2706sf and attached 211sf garage
Valuation:
N/A
Permit #:
18000-02840
Status:
final
Fee:
$15,871
Permit Type:
N/A
Building Type:
N/A
Amy skin care: installation of partition walls water heater
Valuation:
$10,000
Permit #:
B-BP19-0534
Status:
final
Fee:
$1,738
Permit Type:
Code enfr
Building Type:
N/A
Scope of work to include: fire repair of roof structure of 2nd floor fire originated in unit #6: replace associated mechanical. rewiring for unit 6
Valuation:
$38,902
Permit #:
2012 030605 MF
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
No Description Available
Valuation:
$300
Permit #:
65120014
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Wei Jaw Jeng License info
Verified License
| License # | 999487 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Wei Jaw Jeng at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1085686 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | 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 Wei Jaw Jeng at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 539169 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | 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 Wei Jaw Jeng at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
19
Permits
- Building permit records show that Wei Jaw Jeng has worked on 19 permitted projects.
Wei Jaw Jeng Employees
MJ
Max Jay Jeng
Sole Owner
MJ
Michael Tsu Wei Jeng
Sole Owner
WJ
Wei Jaw Jeng
Owner