Updated: May 14, 2026
Location and Projects
Address
50 BONAVENTURA DR, San Jose, CA, 95134
Use our bidding system to
request a quote
M4 Builders Construction
M4 Builders, 50 Bonaventura Dr, San Jose, CA (Owned by: Mai Industries) holds a General Building license and 3 other licenses according to the California license board.
Their BuildZoom score of 109 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 M4 Builders, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
M4 Builders Services
Start a project today:
M4 Builders Contact Information
Phone Number: (408) 434-9880
Edit
Address: 50 BONAVENTURA DR, San Jose, CA 95134
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
M4 Builders San Jose
Quality
109
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
M4 Builders has a BuildZoom score of 109, which places them above 95% of 336,931 contractors in California.
Activity
|
4 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that M4 Builders has worked on at least
8.0 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 |
|
3 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
|
2 projects
|
$500k-$1mil |
|
1 project
|
$1mil+ |
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.
Tenant improvement - abbott adc lab and office improvements in an unoccupied market ready buliding that would include new customer investigation group bsl 2 lab product quality engineering lab & pqe electronics lab with a gown room & unpacking rooms. scope to include new roof top units and roof screen. existing offices to have cosmetic upgrades (bldg/mech/elec/plumbing)
Valuation:
$4,894,291
Permit #:
CB21-0511
Status:
final
Fee:
$86,879
Permit Type:
N/A
Building Type:
N/A
Tenant improvement - abbott diabetes care - project scope limits to sitework only - reconfiguring 8 existing standard parking stalls into 7 total ev charging parking stalls (including 1 van accessible and 1 standard accessible ev stall) (elec)
Valuation:
$125,000
Permit #:
E23-0012
Status:
final
Fee:
$4,207
Permit Type:
N/A
Building Type:
N/A
The fire code assembly update of the commercial tenant improvements to the existing first floor of the building will include providing new exit door/devices occupant load signs fire extinguisher exit signs and illuminated means of egress
Valuation:
$20,000
Permit #:
FCP2023-00069
Status:
final
Fee:
$492
Permit Type:
N/A
Building Type:
N/A
Pwd21-0011: exterior improvements - new uncovered parking lot in undeveloped lot with new landscape and exterior lights for abbott adc (bldg/mech/elec/plumbing)
Valuation:
$570,000
Permit #:
CB21-0629
Status:
final
Fee:
$13,064
Permit Type:
N/A
Building Type:
N/A
Tenant improvement - abbott - commercial interior shower locker room improvement to include the demolition of non structural partitions and finishes. new work includes the construction of non-structural partitions and ceilings finishes light fixtures and electrical receptacles - 740 sq ft (bldg/elec/mech/plumbing)
Valuation:
$250,000
Permit #:
CB20-0312
Status:
final
Fee:
$7,371
Permit Type:
N/A
Building Type:
N/A
Installation of a new steam-in-place (sip) station for biopharmaceutical portable tanks
Valuation:
$475,000
Permit #:
BLD2023-04022
Status:
issued
Fee:
$10,065
Permit Type:
Alteration
Building Type:
N/A
Addition of clean agent to an existing second floor file room such as ceiling tile and low leak dampers on the supply and return to the room air system
Valuation:
$135,000
Permit #:
BLD2024-03953
Status:
final
Fee:
$3,450
Permit Type:
Alteration
Building Type:
N/A
Removal of double doors in corridor. addition of ramp and chain-link fence in existing equipment enclosure. cold room storage specs and anchorage (deferred submittal)
Valuation:
N/A
Permit #:
BLD2023-00647-001
Status:
triage
Fee:
$361
Permit Type:
N/A
Building Type:
N/A
Tenant improvement revance - construct decorative walls and ceiling provide backing for wall-mounted monitor relocate/power and data outlets remove/relocate light fixtures supply air fixture exit sign and occupancy sensor. (no exterior)
Valuation:
$25,000
Permit #:
B21-0397
Status:
final
Fee:
$1,701
Permit Type:
N/A
Building Type:
N/A
Commercial tenant improvement to include restroom remodel mist collection system installation modular wall installation and laboratory gowning room reconfiguration
Valuation:
$576,838
Permit #:
BPA2020-02467
Status:
filed
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Tenant improvement office expansion for abbott diabetes care on 2nd floor of building. area of work 17 590 sq.ft. occupancy group b construction type v-b. demolition of non-structural partitions casework light fixtures. building (n) non-structural partition for offices remodel breakrooms w accessible compliant sinks (n) light fixtures & receptacles r/r mechanical duct relocate supply ... see more
Valuation:
$250,000
Permit #:
CB18-0898
Status:
final
Fee:
$9,109
Permit Type:
N/A
Building Type:
N/A
Install new mechanical equipment and install new dx coil in existing mechanical unit within existing roof screen area (bldg/mech/elec)
Valuation:
$175,000
Permit #:
CB20-0753
Status:
final
Fee:
$4,103
Permit Type:
N/A
Building Type:
N/A
Install new mechanical equipment and install new dx coil in existing mechanical unit within existing roof screen area (bldg/mech/elec)
Valuation:
$175,000
Permit #:
CB20-0752
Status:
final
Fee:
$4,103
Permit Type:
N/A
Building Type:
N/A
Selected owner furnished equipment are removed from scope of this project. owner will submit the installation of these equipment on a separate permit once equipment is funded and procured in the future
Valuation:
N/A
Permit #:
BLD2023-05089-001
Status:
triage
Fee:
$155
Permit Type:
N/A
Building Type:
N/A
Installation and seismic anchorage of owner furnished equipment submitted as a separate permit to the previously approved permit number bld2023-05089
Valuation:
$5,000
Permit #:
BLD2024-00933
Status:
complete
Fee:
$608
Permit Type:
Other
Building Type:
N/A
Install 2 split system units approx. 3 tons each to serve room 120 and room 124. install 2 exhaust fans: one in breakroom 160 and one in sandblasting room 141. install 2 supply registers in print room 154
Valuation:
$60,000
Permit #:
CM180135
Status:
final
Fee:
$1,189
Permit Type:
Misc
Building Type:
N/A
Tenant improvement for new business (sculptology) 8/25/21 revision upgrade to meter panel 3 phases. gs
Valuation:
N/A
Permit #:
BIT21-008044
Status:
final
Fee:
$3,244
Permit Type:
N/A
Building Type:
N/A
Tenant improvement sculptology (unit# 440) - interior remodel by creating new offices staff room waiting room reception area and remodel existing restroom (no exterior work)
Valuation:
$48,000
Permit #:
B18-2741
Status:
final
Fee:
$2,424
Permit Type:
N/A
Building Type:
N/A
Building - repair and expand existing equipment enclosure. provide structural anchorage of the exterior equipment. (mdal)
Valuation:
N/A
Permit #:
BLD2017-02696
Status:
issued
Fee:
$2,959
Permit Type:
N/A
Building Type:
N/A
This amendment is for bulletin 3 which clarifies the fabrication of an equipment pedestal
Valuation:
N/A
Permit #:
BLD2022-09109-002
Status:
triage
Fee:
$52
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
242
BZ Score
$59K
Avg Project
-
Projects
193
BZ Score
$200K
Avg Project
-
Projects
187
BZ Score
$30K
Avg Project
-
Projects
M4 Builders Reviews
BuildZoom hasn't received any reviews for M4 Builders. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
M4 Builders License info
Verified License
| License # | 296965 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for M4 Builders 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 # | 296965 |
| Status | Active |
| City | Milpitas |
| Type | Contractor, General |
| Business Type | Sole Ownership, Corporation |
- When BuildZoom last verified this license, it had an expiration date of January, 2017. Check the current license status of M4 Builders with the The City of Milpitas, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 587432 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, 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 M4 Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 288097 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership, 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 M4 Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
109
BuildZoom Score
Insured
| Insurer | Zurich American Insurance Company |
Bonded
| Bonded Agent | Safeco Insurance Company Of America |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Trumbull Insurance Company |
139
Permits
- Building permit records show that M4 Builders has worked on 139 permitted projects.
M4 Builders Employees
DS
Deborah Gail Squires
Officer
JM
Jane S Loretta Mairose
Officer
JP
Jonathan Barry Paxton
Officer
MI
Mai Industries
Owner
MM
Michael Francis Mairose
Rmo / Ceo / Pres
RM
Roger Francis Mairose
Sole Owner
WM
Wendy Watt Mairose
Officer