Updated: May 04, 2026
Location and Projects
Address
1617 CARL AVE, Milpitas, CA, 95035
Use our bidding system to
request a quote
Welco Construction Inc
Serving Milpitas and the surrounding Bay Area, Welco Construction Inc specializes in commercial and residential construction projects. With a decade of experience, the company handles a range of work including new builds, remodeling, and tenant improvements. Their portfolio features projects such as office renovations, custom home construction, and retail space build-outs. Welco Construction works with property owners, developers, and businesses to complete projects that align with specific client needs and local building codes. The team employs contemporary construction methods for both structural and interior projects, aiming to deliver functional and lasting results. Welco Construction operates throughout Santa Clara County, taking on projects of various scales in both suburban and urban settings.
Welco Construction Inc Services
Start a project today:
Welco Construction Inc Contact Information
Phone Number: (408) 838-4054
Edit
Address: 1617 CARL AVE, Milpitas, CA 95035
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Welco Construction Inc Milpitas
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Welco Construction Inc has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.
Activity
|
12 projects
|
2025 |
|
9 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that Welco Construction Inc has worked on at least
27.0 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
|
5 projects
|
New Constructions |
|
11 projects
|
Kitchen remodels |
|
5 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that Welco Construction Inc mostly works on
kitchen remodel
and multi-room remodel
projects.
Pricing
|
1 project
|
< $5k |
|
6 projects
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
3 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $32,280. 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 Welco Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Only like for like replacements of plumbing mechanical and electrical sub trades fixtures in similar locations is allowed under this building permit. ** 3/21/25 revised permit to correct the property address for an online permit (hm)
Valuation:
N/A
Permit #:
2025 098604 RS
Status:
final
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
1) remove stucco and install plywood and stucco to all exterior walls of single family residence. 2) r/r windows in same framed openings. same sizes same locations. no header changes
Valuation:
$80,554
Permit #:
2025 129629 RS
Status:
issued
Fee:
$81
Permit Type:
Single-family
Building Type:
N/A
Remove wall between kitchen and dining room; remove pantry closet; new vaulted ceiling; new kitchen; upgrade the electrical sub panel in the garage
Valuation:
$30,000
Permit #:
BLD2025-05711
Status:
complete
Fee:
$3,734
Permit Type:
Alteration
Building Type:
N/A
Fang residence detached adu: construct (2) bedroom (2) bathroom
Valuation:
N/A
Permit #:
B-BP25-0112
Status:
issued
Fee:
$7,958
Permit Type:
Detached adu
Building Type:
N/A
Remove interior wall between kitchen and living room. kitchen and bathroom remodel. upgrade electrical panel and subpanel new furnace and air conditioning upgrade existing insulation in attic and exterior wall install new electrical outlets and wiring
Valuation:
$60,000
Permit #:
BLD2022-07829
Status:
complete
Fee:
$2,577
Permit Type:
N/A
Building Type:
N/A
1. kitchen and bathroom remodel (2) - bathrooms like for like 2. whole house rewire 3. upgrade electrical main panel from 100 amp to 200 amp
Valuation:
$50,000
Permit #:
BD-2024-296633
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodeling kitchen take off existing kitchen counter top and cabinet. install new cabinet and counter. replacing sub-panel in the garage
Valuation:
$14,000
Permit #:
BLD2023-05707
Status:
complete
Fee:
$794
Permit Type:
Alteration
Building Type:
N/A
Remodel & interior demolish of illegal work *conditions
Valuation:
N/A
Permit #:
BLD2025-0053
Status:
issued
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Liang residence: replace hallway & bathroom walls
Valuation:
N/A
Permit #:
B-RV25-0063
Status:
issued
Fee:
$260
Permit Type:
Revision
Building Type:
N/A
Fang residence: addressing for detached adu
Valuation:
N/A
Permit #:
B-AC25-0004
Status:
issued
Fee:
$732
Permit Type:
Detached adu
Building Type:
N/A
Residential kitchen and bathroom remodel like for like
2024-08-08
Kitchen remodel 2 bathrooms remodel replace subpanel at same location
Valuation:
$85,000
Permit #:
BLD2025-01015
Status:
complete
Fee:
$15
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel new cabinets upgrade electrical subpanel
Valuation:
$18,000
Permit #:
BLD2023-10514
Status:
complete
Fee:
$876
Permit Type:
Alteration
Building Type:
N/A
Upgrade electrical sub-panel; kitchen and bathroom remodel like for like. fixtures and appliance will remain in same location. change out vent fans and kitchen hood
Valuation:
$70,000
Permit #:
BLD23-70195
Status:
final
Fee:
$903
Permit Type:
N/A
Building Type:
N/A
Lu residence: remodel kitchen and (2) bathrooms
Valuation:
$35,000
Permit #:
B-BP23-0102
Status:
final
Fee:
$1,265
Permit Type:
Kitchen & bathroo...
Building Type:
N/A
Addition partition walls to (e) laundry room to create a full bathroom for the den located on first floor
Valuation:
$20,000
Permit #:
BLD2022-01759
Status:
complete
Fee:
$1,445
Permit Type:
Alteration
Building Type:
N/A
Kitchen and bathroom remodel
Valuation:
$30,000
Permit #:
B25-1571
Status:
issued
Fee:
$2,935
Permit Type:
Kitchen/bathroom ...
Building Type:
N/A
Kitchen remodels new cabinets bathroom remodel like for like
Valuation:
$50,000
Permit #:
B2023-0409
Status:
final
Fee:
$2,062
Permit Type:
Interior remodel
Building Type:
N/A
Liang residence: addition of 520 sf to expand dining room an
Valuation:
$350,000
Permit #:
B-BP24-0065
Status:
issued
Fee:
$9,989
Permit Type:
Remodel-addition
Building Type:
N/A
Kitchen remodel
Valuation:
$34,560
Permit #:
25-1501
Status:
issued
Fee:
$1,515
Permit Type:
N/A
Building Type:
N/A
Fang residence: upgrade main to 400a
Valuation:
N/A
Permit #:
B-EL24-0134
Status:
issued
Fee:
$490
Permit Type:
Electrical
Building Type:
N/A
Similar Contractors See more
184
BZ Score
$60K
Avg Project
-
Projects
242
BZ Score
$59K
Avg Project
-
Projects
193
BZ Score
$200K
Avg Project
-
Projects
Welco Construction Inc Reviews
BuildZoom hasn't received any reviews for Welco Construction Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Welco Construction Inc License info
Verified License
| License # | 1003390 |
| Status | Active |
| State | California |
| Type | General Building, Electrical |
| Business Type | Sole Ownership, Corporation |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Welco Construction Inc 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 # | 1003390 |
| Status | Active |
| City | Milpitas |
| Type | Contractor, General |
| Business Type | Sole Ownership, Corporation |
- When BuildZoom last verified this license, it had an expiration date of May, 2019. Check the current license status of Welco Construction Inc with the The City of Milpitas, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 999722 |
| 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 Welco Construction Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
42
Permits
- Building permit records show that Welco Construction Inc has worked on 42 permitted projects.
Welco Construction Inc Employees
DF
Dehui Fang
Rmo
DF
Dehui Fang
Rmo
JL
Jiahua Liang
Ceo / President
RL
Rongjie Liang
Rmo / Ceo / Pres
RL
Rongjie Liang
Officer
SZ
Sanmei Zhang
Officer
SZ
Sanmei Zhang
Officer
YJ
Yong Jiang
Sole Owner
YJ
Yong Jiang
Owner