Updated: Feb 01, 2026
Location and Projects
Address
15791 WINCHESTER BLVD, Monte Sereno, CA, 95030
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Sum's Construction
Since 2001, Sum's Construction has delivered residential construction services in Monte Sereno, California, and the surrounding region. The company specializes in custom home building as well as remodeling projects for single-family properties. Project examples include new construction of contemporary residences, kitchen renovations, and full-home remodels designed to optimize both aesthetics and functionality. Sum's Construction manages projects ranging from ground-up builds to interior renovations, working directly with homeowners throughout the planning and construction phases. The company also brings experience in integrating high-end finishes and modern design elements into their projects. With nearly two decades of experience, Sum's Construction focuses on building and updating homes that reflect the needs and style preferences of clients throughout the Monte Sereno area.
Sum's Construction Services
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Sum's Construction Contact Information
Phone Number: (408) 202-6501
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Address: 15791 WINCHESTER BLVD, Monte Sereno, CA 95030
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Sum's Construction Monte Sereno
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sum's Construction has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
5 projects
|
2025 |
|
1 project
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Sum's Construction has worked on at least
10.0 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 |
|
1 project
|
$20k-$50k |
|
1 project
|
$100k-$250k |
|
1 project
|
$250k-$500k |
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.
Based on our discussion with the pg&e representatives we have decided to replace all the gas appliances with electric appliances. thus we updated the plan with the electric appliances and also the title 24 documents with the new electric calculations. we also updated the kitchen layout
Valuation:
N/A
Permit #:
BLD2022-04564-001
Status:
triage
Fee:
$269
Permit Type:
N/A
Building Type:
N/A
Revision for 200amp panel/meter for the adu. see bldx for primary house panel upgrade
Valuation:
N/A
Permit #:
BLD2022-04564-002
Status:
triage
Fee:
$52
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel kitchen cabinets and island replacement - same location replace kitchen sink and p-trap changing 8 outlets for afci
Valuation:
$20,000
Permit #:
BRALT-25-0327
Status:
final
Fee:
$1,076
Permit Type:
Interior remodel
Building Type:
N/A
Upgrade home systems for 106 wesley st and sewer replacement
Valuation:
$30,000
Permit #:
20250114
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 600 sf detached adu at the rear yard (ccr) pln2022-00333
Valuation:
$125,000
Permit #:
BLD2022-04564
Status:
complete
Fee:
$7,154
Permit Type:
New accessory dwe...
Building Type:
N/A
Upgrade existing service electrical panel from 100 amp to 200 amp (adu under bld2022-04564)
Valuation:
$2,000
Permit #:
BLD2024-05357
Status:
complete
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Install (n) generator and enclosure
Valuation:
N/A
Permit #:
BLDG2024-0243
Status:
issued
Fee:
$400
Permit Type:
Generator
Building Type:
N/A
Minor bathroom remodel to apartment unit d. scope includes r/r sink toilet and tub/shower in same location
Valuation:
$7,550
Permit #:
2019 137179 MF
Status:
filed
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Upgrade electrical panel from 100 amp to 200 amp
Valuation:
N/A
Permit #:
E23-208
Status:
triage
Fee:
$165
Permit Type:
N/A
Building Type:
N/A
Remodel (e) pool
Valuation:
N/A
Permit #:
BLDG2024-0241
Status:
issued
Fee:
$3,955
Permit Type:
Pool spa new repair
Building Type:
N/A
Addition 941': 2 bedrooms 2 bathrooms 1 living room 1 dining & 1 laundry remodel 1233': convert partial garage into living area restructure entire roof adding shearwall includes e.m.p. remodel includes re-roof of entire house sent file & plans to microfilm 06/2009
Valuation:
N/A
Permit #:
07030009
Status:
final
Fee:
$5,932
Permit Type:
N/A
Building Type:
N/A
Addition of 1 139sf at rear to addition 2-bathroom 2 bedrooms and one office. upgrade electrical panel 200 amps. fire sprinkler - install new 42 fire sprinkler heads (issued 8/7/17)
Valuation:
$147,457
Permit #:
BD-2016-260650
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Truss repair
Valuation:
N/A
Permit #:
FY21-0968
Status:
final
Fee:
$290
Permit Type:
Repairs
Building Type:
N/A
Fire sprinkler - install new 42 fire sprinkler heads (issued 8/7/17). addition of 1 139sf at rear to addition 2-bathroom 2 bedrooms and one office. upgrade electrical panel 200 amps. [bd-2016-260650]
Valuation:
$15,000
Permit #:
FS-2017-263686
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Lee residence: kitchen remodel remove wall at living and d
Valuation:
$80,000
Permit #:
B-BP21-0399
Status:
final
Fee:
$6,579
Permit Type:
Remodel-addition
Building Type:
N/A
Add(1220sq)-familyroom kitchen bedroom bathroom & laundry-remodeled-garage & kitchen(353sq)-need soils report.fire sprinklers required. soils report received
Valuation:
N/A
Permit #:
08060063
Status:
final
Fee:
$4,717
Permit Type:
N/A
Building Type:
N/A
Addition: 643 2 bedrooms 1 bathroom 1 reading room. remodel existing bathroom kitchen and convert 1 bedroom to the reading room. sent file & plans to microfilm 04/2009 box 292
Valuation:
N/A
Permit #:
06120172
Status:
final
Fee:
$3,418
Permit Type:
N/A
Building Type:
N/A
Addition 91 sf and remodel 445 sf to single story sfr; 2/24/11 replace (2) windows and (1) patio door remodel bathroom (2) 25 sf and reduce bathroom window size
Valuation:
$35,000
Permit #:
B10-0826
Status:
final
Fee:
$3,091
Permit Type:
N/A
Building Type:
N/A
Sfdwl remodel kitchen(180sqft)& 3 bathrooms (250sqft) non-structural
Valuation:
N/A
Permit #:
11080094
Status:
final
Fee:
$1,182
Permit Type:
N/A
Building Type:
N/A
Addition 660'(liv 2 bath/1 bed)& remodel bathroom ktichen contractor signed no subcon. form (08/09/05)
Valuation:
N/A
Permit #:
05020159
Status:
final
Fee:
$3,211
Permit Type:
N/A
Building Type:
N/A
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Sum's Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Sum's Construction License info
Verified License
| License # | 818433 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Sum's Construction 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 # | 818433 |
| Status | Active |
| City | Milpitas |
| Type | Contractor |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of March, 2017. Check the current license status of Sum's Construction with the The City of Milpitas, CA
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
23
Permits
- Building permit records show that Sum's Construction has worked on 23 permitted projects.
Sum's Construction Employees
YS
Yat Leung Sum
Sole Owner