Updated: Jul 04, 2026
Location and Projects
Address
409 UNDERHILL DRIVE, Glendora, CA, 91741
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Westmont Design & Construction
Westmont Design & Construction serves Glendora, California and the surrounding San Gabriel Valley with residential remodeling and custom home building services. Drawing from more than 20 years of experience, the company manages a wide range of projects including kitchen and bathroom renovations, additions, and new construction of single-family homes. The Westmont Design & Construction portfolio highlights both traditional and contemporary design solutions tailored to each client's needs and lifestyle. The firm works closely with homeowners throughout the planning, design, and construction phases, emphasizing clear communication and a collaborative workflow. With local knowledge of neighborhoods in and around Glendora, Westmont Design & Construction brings extensive expertise to every project, focusing on functional layouts and high-quality materials suited for Southern California homes.
Westmont Design & Construction Services
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Westmont Design & Construction Contact Information
Phone Number: (626) 485-0912
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Address: 409 UNDERHILL DRIVE, Glendora, CA 91741
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Westmont Design & Construction Glendora
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Westmont Design & Construction has a BuildZoom score of 101, which places them above 88% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
3 projects
|
2023 |
Our building permit records indicate that Westmont Design & Construction has worked on at least
6.0 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
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Westmont Design & Construction mostly works on
home addition
projects.
Pricing
|
2 projects
|
< $5k |
|
2 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
2 projects
|
$100k-$250k |
The typical size of their permits is approximately $13,000. 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 Westmont Design & Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
[eplan] 2nd floor addition to (e) single-family dwelling and conversion of (e) carport to enclosed garage
Valuation:
$112,000
Permit #:
25014-10000-00415
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to 22016-20000-30436. revise work description to: 22'-8 x 3'-6 addition under ex. roof overhang to expand kitchen and remodel. remove interior dropped ceiling for vaulted ceiling. remove extension. posts. new engineer of record
Valuation:
$8,000
Permit #:
23014-20000-03248
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition to (e) 2-story single family dwelling and remodel entire building in bho
Valuation:
$230,000
Permit #:
20014-10000-05762
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
5'-0 x 5'-6 addition enclosure of pantry at upper level and interior remodel to replace two windows and interior doors all work under the existing roof enclosure - all work per engineer
Valuation:
$30,000
Permit #:
22016-20000-30436
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Site grading for addition to (e) single family dwelling
Valuation:
$88
Permit #:
23030-10000-06518
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition to (e) single family dwelling per dir-2020-6660-spp (1-story)
Valuation:
$138,375
Permit #:
22014-10000-04211
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior remodel (700 s/f) w structural alteration - kitchen (2) bathroom den office master bedroom & convert storage into new laundry room. window/door/skylight alteration. re-roof (23 sq) w partial insulation. replace radiant flooring system
Valuation:
N/A
Permit #:
BLD2017-01668
Status:
issued
Fee:
N/A
Permit Type:
General
Building Type:
N/A
Convert lower level area under carport to a new study room inside ( e ) single family dwelling
Valuation:
$25,000
Permit #:
18014-10000-01196
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Hillside grading for addition to (e) 2-story single family dwelling new detached garage and pool house. 4 of 5
Valuation:
$41
Permit #:
21030-10000-04810
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New retaining wall along the driveway at the new detached garage. 5 of 5
Valuation:
$966
Permit #:
21020-10000-01616
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New detached unconditioned pool house with attached trellis. 2 of 5
Valuation:
N/A
Permit #:
20010-10000-05066
Status:
triage
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(n) detached 1-car garage. 3 of 5
Valuation:
$30,000
Permit #:
20010-10000-05067
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition of new bedroom and bathroom at 505 s/f to single family residence
Valuation:
N/A
Permit #:
BLD2016-00952
Status:
issued
Fee:
N/A
Permit Type:
General
Building Type:
N/A
Install plumbing for remodel
Valuation:
N/A
Permit #:
PLM2019-00089
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install electrical for remodel
Valuation:
N/A
Permit #:
ELE2019-00100
Status:
issued
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
Mechanical for addition
Valuation:
N/A
Permit #:
MEC2017-01106
Status:
final
Fee:
N/A
Permit Type:
Mechanical permit
Building Type:
N/A
Electrical for addition
Valuation:
N/A
Permit #:
ELE2017-01445
Status:
final
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
Exterior alteration to (e) duplex: replace (e) windows with same size and same location replace (e) siding with stucco and wood siding repair (e) balconies install (n) steel mesh covering over (e) exterior steel stair
Valuation:
N/A
Permit #:
15016-10000-12295
Status:
Issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
(2) duplex
Addition of family room bathroom & laundry room (489 s/f). interior remodel (1, 702 s/f) - enlarge kitchen by removing breakfast nook laundry room bathroom & bedroom addition new bathroom in bedroom (3) baths (3) bedrooms & convert closet into new powder room. window/door alteration. addition (2) skylights convert to vaulted ceiling in kitchen. new attached garage/storage (503 s/f)
Valuation:
N/A
Permit #:
BLD2017-01108
Status:
issued
Fee:
N/A
Permit Type:
General
Building Type:
N/A
Partial demolition @ 1st floor (27 s/f). addition of family room bathroom & stairs @ 1st floor (385 s/f) and master bedroom @ 2nd floor (398 s/f). interior remodel (450 s/f) - kitchen and new pantry @ 1st floor and master bathroom & new laundry @ 2nd floor. new attached arbor (575 s/f). demolish (2) detached carports (950 s/f) & construct new 4-car garage (737 s/f)
Valuation:
N/A
Permit #:
BLD2013-00339
Status:
final
Fee:
N/A
Permit Type:
General
Building Type:
N/A
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Verified License
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Westmont Design & Construction License info
Verified License
| License # | 836202 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Westmont Design & Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Norguard Insurance Company |
31
Permits
- Building permit records show that Westmont Design & Construction has worked on 31 permitted projects.
Westmont Design & Construction Employees
MB
Mark Jonathan Blanco
Owner