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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 Contact Information

Phone: (408) 210-3025 Edit
Address: 1794 THE ALAMEDA, San Jose, CA 95126 Edit

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.

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+
Value Not Public: 32.0 projects
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.

Building Permits by Peter G De Mattei

Sort by: Notable Notable | Date Date | Job Value Job Value
Residential - repair
2025-05-07
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
1 & 2 family detached dwellings
2025-02-13
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
Residential minor
2024-09-10
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
Residential - addition
2025-08-22
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
Residential - addition
2024-07-02
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
Residential - trellis-deck
2025-12-09
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
Residential - new
2025-12-10
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
1 & 2 family detached dwellings
2023-08-17
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
Addition and remodel
2024-03-19
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
Residential - new
2024-11-19
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
Residential - alteration
2024-11-15
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
Building permit
2024-09-16
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
1 & 2 family detached dwellings
2025-05-14
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
1 & 2 family detached dwellings
2023-10-27
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
1 & 2 family detached dwellings
2025-02-19
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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