Updated: Mar 27, 2026
Location and Projects
Address
P O BOX 1220, Pomona, CA, 91769
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JONATHAN WILLIAM WELCH Construction
Their BuildZoom score of 0 does not rank in the top 50% of California contractors.
If you are thinking of hiring JONATHAN WILLIAM WELCH, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
JONATHAN WILLIAM WELCH Services
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JONATHAN WILLIAM WELCH Contact Information
Phone Number: (909) 213-8593
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Address: P O BOX 1220, Pomona, CA 91769
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JONATHAN WILLIAM WELCH Pomona
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are JONATHAN WILLIAM WELCH, click “This is My Business” to update your information.
Activity
|
3 projects
|
2025 |
|
7 projects
|
2024 |
|
13 projects
|
2023 |
Our building permit records indicate that JONATHAN WILLIAM WELCH has worked on at least
23.0 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
|
7 projects
|
Home Additions |
|
3 projects
|
New Constructions |
|
5 projects
|
Multi-room remodels |
Analyzing permits over the last 4 years shows that JONATHAN WILLIAM WELCH mostly works on
home addition
and multi-room remodel
projects.
Pricing
|
6 projects
|
< $5k |
|
5 projects
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
6 projects
|
$50k-$100k |
|
6 projects
|
$100k-$250k |
|
2 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $35,000. 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 JONATHAN WILLIAM WELCH
This is a sample of this contractor's permits. Click here to access their complete permit history.
Demolish most of (e) int. & extension. walls and erect a 2-story irr. shaped 32 x 49'-4 single family dwelling; nfpa-13d thru-out
Valuation:
$200,000
Permit #:
23014-20000-05114
Status:
plancheck
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
1. demolish portion of existing lower level upper level deck and roof. 2. addition and remodel lower floor addition new master bedroom bathroom closet and laundry room. 3. addition and remodel upper floor addition new kitchen dining and family room new cover deck new entrance cover and interio remodel
Valuation:
$180,000
Permit #:
20014-10000-04617
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition of 3.75 x 9.75 on the first story and an irregular second story addition of 15'8 x 25'2 and a 9'4 x 12.75 rooftop deck over the garage and interior alteration to revise the first story floor plan and remodeling throughout
Valuation:
$71,567
Permit #:
21014-30000-04595
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Tenant improvement to (e) retail space (1042 sq ft). structural support for rooftop equipment. relocate portion of storefront
Valuation:
$150,000
Permit #:
22016-10000-35608
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit # 18014-30000-01155 to revise proposed improvements to eliminate work on the third floor and alteraion to architectural and structla plans. (no change in structural inventory)
Valuation:
$501
Permit #:
18014-30001-01155
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel and addition 2 story *** 1 of 3 ***
Valuation:
$300,000
Permit #:
22014-30000-03098
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit 18014-30002-01155 to reduce scope of work remove lid panter revise entry at drive way gates. revise site plan to maintain (e) deck layout. (no change to structural inventory)
Valuation:
$501
Permit #:
18014-30002-01155
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel existing single family dwelling for kitchen extensions. interior remodel and interior partition changes. exterior alterations for infill and new openings. addition new uncoverred deck at rear of building no sqft added
Valuation:
$50,000
Permit #:
21014-10000-04949
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Ti: ground floor for credit union vacant space (1490 sf) improvement are archtectural mep
Valuation:
$250,000
Permit #:
202209082066
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
31 - lending inst...
Remodel to (e) 2-story single family dwelling. kitchen remodel addition window at rear enlarge opening to playroom. remodel 1st floor bathroom remove soffit over staircase open wall and addition new railing. convert laundry room to bathroom. move laundry to closet. remodel bedrooms. work per engineer
Valuation:
$40,000
Permit #:
21016-20000-25751
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Tenant improvement to (e) office. no change in use. includes new non-structural partitions relocated bathrooms. structural upgrades include ne shear walls and reinforced roof structure. no additional s.f. added
Valuation:
$120,000
Permit #:
20016-30000-07394
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Interior and exterior alteration to (e) s.f.r
Valuation:
$200,000
Permit #:
16016-30000-29355
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 19014-10000-000248 to change the description of work to building renovation and addition of 499 sqft. addition to be from converted crawl space into 2 bedrooms and 2 bathroom. revonated single family dwelling will be 2-story. no fee department error
Valuation:
N/A
Permit #:
19014-10001-00248
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental ref to pcis#: 21014-30000-01151 to omit portion of trellis addition and revise structural details of trellis in (e) 1-story s.f.d
Valuation:
$501
Permit #:
21014-30001-01151
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental ref to pcis # 19010-30000-00364 to remove stair case change carport to garage change window sizes and revise front facade
Valuation:
$501
Permit #:
19010-30002-00364
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
276 sf dwelling unit per ca govt. code 65852.2 (e) (1) (b) & applicable part of lamc 12.22 a.33 (c)-(d) (g)
Valuation:
$55,000
Permit #:
21010-10000-00931
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition 125 x 33'( l-shape) to (e) 1 story dwelling. complete remodel to expand (e) bedrooms and living room. relocate bathrooms and remodel kitchen. reframe entire building. building shall be fully sprinklered. all work per engineering
Valuation:
$130,000
Permit #:
16014-20000-03313
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to ref: 21047-30000-00526 to revise structural detail on the pool shell. additional details for planter wall. no changes to the grading amount
Valuation:
$5,000
Permit #:
21047-30001-00526
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition and remodel to existing single family dwelling to create 3-story single family dwelling with attached carport
Valuation:
$561,700
Permit #:
17014-30000-02755
Status:
expired
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental to pcis # 16016-30000-29355 to revise roof layout & associated structural changes
Valuation:
$30,000
Permit #:
16016-30002-29355
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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JONATHAN WILLIAM WELCH Reviews
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JONATHAN WILLIAM WELCH License info
License Not Verified
| License # | 78893 |
| Status | Active |
| State | California |
| Business Type | Sole Ownership |
- When BuildZoom last verified this license, it had an expiration date of March, 2022. Check the current license status of JONATHAN WILLIAM WELCH with the California Architect License Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 785660 |
| 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 JONATHAN WILLIAM WELCH at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 998220 |
| Status | Inactive |
| State | California |
| Type | Building Moving, Demolition |
| 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 JONATHAN WILLIAM WELCH at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are JONATHAN WILLIAM WELCH, click “This is My Business” to update your information.
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
122
Permits
- Building permit records show that JONATHAN WILLIAM WELCH has worked on 122 permitted projects.
JONATHAN WILLIAM WELCH Employees
JW
John William Welch
Sole Owner
JW
Jonathan William Welch
Owner