Updated: May 31, 2026
Location and Projects
Address
1794 THE ALAMEDA, San Jose, CA, 95126
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Peter G De Mattei Construction
Based in San Jose, Peter G De Mattei brings more than three decades of experience to construction projects throughout the South Bay Area. Active for over 35 years, De Mattei focuses on residential remodeling, new construction, and custom home projects. The firm manages all phases of the build process, from initial planning to completion, working on properties across San Jose and neighboring Silicon Valley communities. Peter G De Mattei’s portfolio includes kitchen and bathroom renovations, home additions, and full-scale interior and exterior upgrades. The business works with homeowners seeking to update existing spaces or build new custom residences tailored to individual needs. Known for experience managing both large and small-scale projects, the firm combines knowledge of regional building standards with established construction practices to deliver results that match client specifications.
Peter G De Mattei Services
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Peter G De Mattei Contact Information
Phone Number: (408) 210-3025
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Address: 1794 THE ALAMEDA, San Jose, CA 95126
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Peter G De Mattei San Jose
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Peter G De Mattei has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
33 projects
|
2025 |
|
20 projects
|
2024 |
|
20 projects
|
2023 |
Our building permit records indicate that Peter G De Mattei has worked on at least
73.0 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
|
22 projects
|
Home Additions |
|
6 projects
|
New Constructions |
|
4 projects
|
Commercial Renovations |
|
16 projects
|
Kitchen remodels |
|
8 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that Peter G De Mattei mostly works on
home addition
and kitchen remodel
projects.
Pricing
|
2 projects
|
< $5k |
|
9 projects
|
$5k-$20k |
|
7 projects
|
$20k-$50k |
|
5 projects
|
$50k-$100k |
|
11 projects
|
$100k-$250k |
|
5 projects
|
$250k-$500k |
|
7 projects
|
$500k-$1mil |
|
2 projects
|
$1mil+ |
The typical size of their permits is approximately $100,000. 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.
Replace siding due to water intrusion/dry rot with like-for-like redwood siding. also includes wood sheathing and water barrier. revision- include new sheetrock and installation. remove/replace fire place insert
Valuation:
$125,000
Permit #:
B25-0232
Status:
issued
Fee:
$2,590
Permit Type:
N/A
Building Type:
Dwellings
Only like for like replacements of plumbing mechanical and electrical sub trades fixtures in similar locations is allowed under this building permit. 4/17/25 revision to addition building permit for interior remodel work to this permit folder. subtrades originally issued. scope of work: -kitchen laundry & bathroom remodel on the 1st floor of a 2 story sf -remove (e) 1st floor bathroom... see more
Valuation:
$12,127
Permit #:
2025 095711 RS
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
Remove 3 french doors in family room and replace with 1 slider door system. remove primary bedroom french doors and replace with window and demolish balcony off of primary bedroom. cdd-0187 planning department exception signed on 3/1/2024. the egress windows will meet the code requirements enforced at the time the structure was permitted. the structure was built in (1935). carbon mono... see more
Valuation:
$200,000
Permit #:
RES-2405492
Status:
expired
Fee:
$2,505
Permit Type:
N/A
Building Type:
N/A
Addition of 1 277 sf at 1st floor and 1 074 sf at 2nd floor new 800 sf attached adu. total new 3 151 sf. new 727 sf roofed open porch and new 133 sf deck
Valuation:
$750,000
Permit #:
B22-1057
Status:
final
Fee:
$27,505
Permit Type:
N/A
Building Type:
Dwellings
Construction of a 2, 438 square foot two-story single family dwelling with a 531 square foot attached garage a 45 square foot covered porch a 260 square foot detached trellis a 150 square foot covered walkway an exterior spa and fire pit; and grading to consist of 165 cubic yards of cut and 20 cubic yards of fill. resubmittal to previously approved permit 19cp01509
Valuation:
$344,649
Permit #:
20CP01186
Status:
final
Fee:
$18,346
Permit Type:
N/A
Building Type:
N/A
Home addition of 188 sf and interior remodel of 950 sf. new front entry with porch 75 sf. new door system and clear story windows at rear yard
Valuation:
$790,000
Permit #:
B24-0289
Status:
issued
Fee:
$16,478
Permit Type:
N/A
Building Type:
Dwellings
Rebuild and widen existing 101 sf upper level deck repair leaks and water damage widening to provide overhead cover for main level door and window below total proposed deck 161 sf
Valuation:
$100,000
Permit #:
B25-0539
Status:
final
Fee:
$3,565
Permit Type:
N/A
Building Type:
Dwellings
New 449 sf detached adu in rear yard
Valuation:
$269,000
Permit #:
B25-0079
Status:
final
Fee:
$11,337
Permit Type:
N/A
Building Type:
Dwellings
Scope of work: -construct 507 sq. ft. front addition for (n) master bedroom (n) master bathroom and (n) entry room. -construct 90.28 sq. ft. rear addition for (n) dining room. demolish fireplace. total (n) addition 597.28 sq. ft. -construct 85.4 sq. ft. covered front porch and 49.98 sq. ft. covered entry porch. -remodel and shrink bathroom to create (n) walking-in-closet. -major kitch... see more
Valuation:
$154,886
Permit #:
2023 102128 RS
Status:
issued
Fee:
$1,728
Permit Type:
Single-family
Building Type:
N/A
Partial residential remodel:front entry balcony small expan
Valuation:
$1,500,000
Permit #:
BLD21-0539
Status:
final
Fee:
$65,773
Permit Type:
N/A
Building Type:
N/A
New detached adu 400 sf part new building part conversion of existing detached garage space 233 sf remodel garage 400 sf
Valuation:
$388,000
Permit #:
B24-0916
Status:
withdrawn
Fee:
$2,691
Permit Type:
N/A
Building Type:
Dwellings
Main home remodel 1550 sf roofed open porch 50 sf
Valuation:
$992,000
Permit #:
B24-0915
Status:
withdrawn
Fee:
$5,751
Permit Type:
N/A
Building Type:
Dwellings
Repair the main house exterior horizontal wood siding with hardie horizontal siding to match existing style
Valuation:
$416,000
Permit #:
BLD2024-02609
Status:
final
Fee:
$349
Permit Type:
Repair
Building Type:
N/A
Scope of work to include: 1.) modification of two (e) interior walls to combine the (e) butler’s pantry and (e) pantry rooms into the pantry rooms into the one pantry room 2.) remove (e) interior wall between the (e) butler’s pantry and the (e) pantry. demolish (e) cabinetry countertop and sink 3.) in the interior wall between the dining room and butler’s pantry move the single door o... see more
Valuation:
$7,714
Permit #:
2024 074314 RS
Status:
final
Fee:
$667
Permit Type:
Single-family
Building Type:
N/A
Scope of work: - 2nd floor level roof deck to be enclosed to create two new bedrooms & new bathroom approx 348 sq ft habitale space - major kitchen remodel - major master bathroom remodel - (n) post and footings in unconditioned basement - r/r windows/doors - (n) hot water heater in basement **3/28/4 revision #1 scope: -existing ceiling beam is to remain. ceiling beam was reviewed and... see more
Valuation:
$125,797
Permit #:
2023 083554 RS
Status:
issued
Fee:
$5,198
Permit Type:
Single-family
Building Type:
N/A
Only like for like replacements of plumbing mechanical and electrical sub trades fixtures in similar locations is allowed under this building permit
Valuation:
N/A
Permit #:
2025 096406 RS
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
Convert 792 sf of (e) access building to (d) adu
Valuation:
$500,000
Permit #:
BLD25-0039
Status:
issued
Fee:
$14,596
Permit Type:
Detached 0-800 sq ft
Building Type:
N/A
Window & door replacement in kind style operation and size
Valuation:
N/A
Permit #:
BLDG2025-0065
Status:
final
Fee:
$6,835
Permit Type:
Replacement windows
Building Type:
N/A
Remove sunroom from east side of structure; increase overall length of accessory dwelling unit from 39'-5 to 41'-4 to maintain 1 200 square feet in size; reconfigure kitchen bathroom & laundry closet layouts; increase overall height of structure from 13'-11/2 to 15'-11/2 above average natural grade split from 20cp01154 for inspection purposes
Valuation:
N/A
Permit #:
22CP03709-REV1
Status:
approved
Fee:
$757
Permit Type:
N/A
Building Type:
N/A
Revise interior lighting shift master bedroom fireplace south change garage door overhead motors addition 60 linear foot stone clad retaining wall measuring 6"-4 in height and remove previously approved stone clad site walls along driveway and parking area remove jacuzzi from north side yard and remove propane tank from south yard. no change in grading. note: photovoltaic system defer... see more
Valuation:
N/A
Permit #:
20CP01154-REV2
Status:
final
Fee:
$1,328
Permit Type:
N/A
Building Type:
N/A
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Peter G De Mattei License info
Verified License
| License # | 478455 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Peter G De Mattei 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 # | 6073205 |
| Status | Active |
| Town | Woodside |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of July, 2017. Check the current license status of Peter G De Mattei with the The Town of Woodside, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 573029 |
| 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 Peter G De Mattei at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 508149 |
| 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 Peter G De Mattei at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $12,500 |
Insured
| Workers Comp Provider | Starr Indemnity & Liability Company |
150
Permits
- Building permit records show that Peter G De Mattei has worked on 150 permitted projects.
Peter G De Mattei Employees
DI
De Mattei Construction Inc
Owner
MM
Mark Silvio De Mattei
Sole Owner
PM
Peter Girard De Mattei
Sole Owner