Updated: May 21, 2026
Location and Projects
Address
623 SOUTH GRANT ST, San Mateo, CA, 94402
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H M M General Contractor Inc
H M M General Contractor Inc, 623 S Grant St, San Mateo, CA (Employees: Hector Michael Mathes and Margaret Anne Mathes) holds a General Building license 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 H M M General Contractor Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
H M M General Contractor Inc Services
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H M M General Contractor Inc Contact Information
Phone Number: (650) 255-2148
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Address: 623 SOUTH GRANT ST, San Mateo, CA 94402
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H M M General Contractor Inc San Mateo
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
H M M General Contractor Inc has a BuildZoom score of 107, which places them above 94% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
3 projects
|
2024 |
Our building permit records indicate that H M M General Contractor Inc has worked on at least
4.0 projects over the past 2 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
|
4 projects
|
$5k-$20k |
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.
Building Permits by H M M General Contractor Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2024-09-13
Single family residence - bathroom remodel within bedroom #2 of the house (no wall alteration-) with new shower pan plywood sheetrock switches tile new vanity; hallway bathroom to have new shower valve and new tile shower surround only revision #1 - moving post to the corner of the wall pushing shower wall back 8 (issued 3/14/23) **hard copy plans**
Valuation:
$15,000
Permit #:
BD-2022-287333
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Renovation & remodel of an (e) single family residence include all (n) windows (n) doors interior renovation to (e) kitchn & bathroom. horizonta extention will be added to the rear. adding (n) stairs to access 3rd story addition including master suite baby room office & deck
Valuation:
$300,000
Permit #:
201508063614
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
*paper plans* convert 40 sq ft of closet space into walk-in shower to create 2 bed 2 bathroom residence
Valuation:
$9,708
Permit #:
BD-2025-298701
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish of existing roof light well (25sqft). demolish of existing eastern stud wall (63 sq ft). roof with two new skylights construction of new stud wall. 1hr fire rated parapet to be added at roof line
Valuation:
$5,500
Permit #:
202408219190
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
To comply with complaints 201928751 and 201928741. install outdoor sink. install lights install sheetrock @ (e) one story detached garden shed. shed for storage only 100 sq ft man work exempt from permit per (106a.2)
Valuation:
$1,000
Permit #:
201903145211
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
61 - storage shed
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2024-11-27
Remodel of hall bathroom and primary bathroom same layout no wall alterations
Valuation:
$50,000
Permit #:
BD-2024-293896
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
For administrative purposes only to correct description that there is no third (3rd) story addition performed or built into scope (project description). of work on previously approved site permit pa#201508063614 and to correct on application & dbi database the (e) 2-story building remains unchanged
Valuation:
$1
Permit #:
201703232192
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2024-11-27
Guest bathroom remodel including meps. no wall alterations or layout changes
Valuation:
$8,000
Permit #:
BD-2024-294537
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace sewer lateral back of house foundation to city main with cast iron
Valuation:
$10,000
Permit #:
MEP-2020-278131
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Rewire entire house and new addition w upgrade service to 200 amps. 28 lts 35 switches 40 recepts 1 garage disp 1 micro 1 range 6 smoke detectors 3 fans 1 dishwasher
Valuation:
N/A
Permit #:
E201804232559
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (e) roof membrane and all finishes on roof including stair finish replace (e) wet bar & fire pit in kind replace (e) glass guard in kind
Valuation:
$25,000
Permit #:
201812208835
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Installing new light and outlet for two bathrooms
Valuation:
N/A
Permit #:
E202110256357
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install two new shower valves install faucet
Valuation:
N/A
Permit #:
PP20211025114
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New plumbing for entire house. 1 kitchen 3 full bathrooms laundry at garage 2 shower pans
Valuation:
N/A
Permit #:
PP20180423752
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Adding light and outlet for garden shed
Valuation:
N/A
Permit #:
E201903149802
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacing 2 tub stalls with tile replacing one vanity
Valuation:
$15,000
Permit #:
202110251105
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Install outdoor sink
Valuation:
N/A
Permit #:
PP20190314974
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install water line and drain for washer dryer hook-up
Valuation:
N/A
Permit #:
PP20171211032
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace cabinets with paint grade cabinets & replace granite conter tops with carian countertops
Valuation:
$12,000
Permit #:
201804237029
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Outlets for washer and dryer. unit 12
Valuation:
N/A
Permit #:
E201712119615
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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H M M General Contractor Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
H M M General Contractor Inc License info
Verified License
| License # | 946873 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for H M M General Contractor Inc 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 | Business Alliance Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
29
Permits
- Building permit records show that H M M General Contractor Inc has worked on 29 permitted projects.
H M M General Contractor Inc Employees
HM
Hector Michael Mathes
Rmo/Ceo/Pres
MM
Margaret Anne Mathes
Officer