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Location and Projects

Address
21643 BIRCH HILL DR, Diamond Bar, CA, 91765
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Alex Chih-shen Lee Construction

Alex Chih-shen Lee, 21643 Birch Hill Dr, Diamond Bar, CA (Employees: Alex Chih Shen Lee, Alex Chih-Shen Lee, and Michael Shao Shiuan Lee) holds a General Building license according to the California license board.

Their BuildZoom score of 107 ranks in the top 6% of 336,931 California licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Alex Chih-shen Lee, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

Alex Chih-shen Lee Contact Information

Phone: (626) 589-9807 Edit
Address: 21643 BIRCH HILL DR, Diamond Bar, CA 91765 Edit

Alex Chih-shen Lee Diamond Bar

Quality

107
94th percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Alex Chih-shen Lee has a BuildZoom score of 107, which places them above 94% of 336,931 contractors in California.

Activity

8 projects
2025
13 projects
2024
5 projects
2023
Our building permit records indicate that Alex Chih-shen Lee has worked on at least 26.0 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

6 projects
Home Additions
6 projects
Multi-room remodels
3 projects
Kitchen remodels
Analyzing permits over the last 4 years shows that Alex Chih-shen Lee mostly works on multi-room remodel and home addition projects.

Pricing

2 projects
< $5k
1 project
$5k-$20k
2 projects
$20k-$50k
1 project
$50k-$100k
1 project
$100k-$250k
1 project
$250k-$500k
Value Not Public: 15.0 projects
The typical size of their permits is approximately $25,000. 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 Alex Chih-shen Lee

Sort by: Notable Notable | Date Date | Job Value Job Value
Proposed apartment building with ground floor commerical ( retail restaurant core&shell only) (toc affordable housing tier 2) 4 story with mezzanine
Valuation:
$5,748,000
Permit #:
19010-10000-03834
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Combo residential - addition/alteration
2024-06-05
Single family residence addition 220 sf and remodel 1620 sf
Valuation:
$400,000
Permit #:
XR2024-0832
Status:
issued
Fee:
$9,058
Permit Type:
N/A
Building Type:
N/A
Building combo
2022-04-01
Convert attached garage in to a junior accessory dwelling unit (441 sqft) (unit #c); and subdivide main dwelling of (2 057 sqft) into two to create an accessory dwelling unit of 681 sqft (unit #b) leaving the main dwelling unit at 1376 sqft (unit#a)
Valuation:
$100,000
Permit #:
B202103652
Status:
final
Fee:
$5,008
Permit Type:
N/A
Building Type:
N/A
Shoring for new apartment building under 19010-10000-03834
Valuation:
$325,000
Permit #:
20020-10000-01135
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Bldg-alter/repair
2024-01-09
Repair store front entrance of an existing 2 story commercial building. enlarge the existing restroom. comply with department order effective date 01/15/2021. permit will expire 30 days from issuance date
Valuation:
$25,000
Permit #:
21016-10000-10401
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit # 21016-10000-10401. plan check only. repair storefront to existing 2-story commerical building. addition to the existing commercial building to enlarge the restroom. permit will be issued under the original permit application 21016-10000-10401. clearances will be added to the original permit application
Valuation:
N/A
Permit #:
21016-10001-10401
Status:
approved
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Building - residential building permit - revision
2025-01-10
Revision to permit br24-2405. remove drop beam at the grid line 3 entrance to kitchen revise hardy frame size remove existing ridge & addition new
Valuation:
$10,000
Permit #:
BR24-3344
Status:
final
Fee:
$383
Permit Type:
N/A
Building Type:
N/A
Plan check - addition
2022-04-14
Single family residence - detached pool house 930 sf
Valuation:
$167,400
Permit #:
0816-2021
Status:
approved
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Permit to remodel kitchen & master bathroom convert 112sqft bedroom to walk-in closet
Valuation:
$50,000
Permit #:
BR24-2405
Status:
final
Fee:
$1,583
Permit Type:
N/A
Building Type:
N/A
Residential building alteration-repair
2024-12-12
Over lay 1 layer of 15 sq's of shingles over existing 1 layer
Valuation:
$2,500
Permit #:
B24-2031
Status:
final
Fee:
$280
Permit Type:
N/A
Building Type:
N/A
Combo residential - addition/alteration
2025-09-03
Single family residence interior remodel 600 sf (3 bathrooms & kitchen & stair) and convert garage to gym 188 sf
Valuation:
$0
Permit #:
XR2025-2368
Status:
plan check applied
Fee:
$1,348
Permit Type:
N/A
Building Type:
N/A
Revision
2024-02-23
Delta 2 struct/delta 4 arch- to revise garage door framing & clarify existing framing near family. room
Valuation:
N/A
Permit #:
REV2024-0294
Status:
approved
Fee:
$346
Permit Type:
N/A
Building Type:
N/A
Revision
2024-01-09
Delta 1 - struc delta 3 - arch - remove windowand frame-in opening remove prep kitchen frm om scope
Valuation:
N/A
Permit #:
REV2024-0049
Status:
approved
Fee:
$138
Permit Type:
N/A
Building Type:
N/A
Combo residential - alteration
2024-01-10
Delta 2 to addition roof deck railing (additional scope)
Valuation:
$40,000
Permit #:
XR2022-3220
Status:
final
Fee:
$1,374
Permit Type:
N/A
Building Type:
N/A
Delta 2 to addition roof deck railing (additional scope)
Valuation:
$30,000
Permit #:
REV2022-2241
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building permit
2025-12-17
Replace (e) 8 windows with a new same size vinyl window
Valuation:
$5,000
Permit #:
BLD25-0426
Status:
issued
Fee:
$486
Permit Type:
N/A
Building Type:
N/A
Combo residential - other
2024-02-13
Single family residence - detached pool house 930 sf change of contractor (renew expired)
Valuation:
N/A
Permit #:
XR2024-0352
Status:
reissued
Fee:
$1,280
Permit Type:
N/A
Building Type:
N/A
Site grading removal and recompact for new apartment under 19010-10000-03834
Valuation:
$7,028
Permit #:
19030-10000-06695
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Bldg-alter/repair
2023-07-12
Change of use of 1-story [25x28] office building to beauty shop. upgrade restroom and non- bearing wall
Valuation:
$20,000
Permit #:
21016-10000-08327
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Combo residential - alteration
2022-02-16
Manufactured kitchen remodel & remove non-bearing wall 215 sf
Valuation:
$30,000
Permit #:
X2021-2022
Status:
final
Fee:
$1,229
Permit Type:
N/A
Building Type:
N/A

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