Updated: May 17, 2026
Location and Projects
Address
148 18TH AVENUE, San Francisco, CA, 94121
Use our bidding system to
request a quote
EW Lum Construction Co Plumber
EW Lum Construction Co Inc, 148-18 Th Ave, San Francisco, CA (Employee: Edwin Wing Lum) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 110 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring EW Lum Construction Co Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
EW Lum Construction Co Inc Services
Start a project today:
EW Lum Construction Co Inc Contact Information
Phone Number: (415) 608-3942
Edit
Address: 148 18TH AVENUE, San Francisco, CA 94121
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
EW Lum Construction Co Inc San Francisco
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
EW Lum Construction Co Inc has a BuildZoom score of 110, which places them above 96% of 336,931 contractors in California.
Activity
|
2 projects
|
2025 |
|
4 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that EW Lum Construction Co Inc has worked on at least
7.0 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 |
|
3 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that EW Lum Construction Co Inc mostly works on
plumbing project
and home addition
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $21,500. 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 EW Lum Construction Co Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Addition one (n) adu on 1st floor garage using ord 162-16. relocate electric & gas meters. (n) tankless water heater. (n) bike parking & storage on 1st floor. (n) electrical & plumbing. remove (e) curb cut on sidewalk. ref #2017-0126-8036 re: units 1-3. ** maher: n/a **
Valuation:
$197,824
Permit #:
201801108309
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Unit 101: remove and replace kitchn cabinets and counter tops permanetly install lighting to comply with cec-150(k) remodel bathroom remove and replace vanity and plumbing fixtures new tile on floor and shower. in kind remodel
Valuation:
$60,000
Permit #:
202311171021
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Unit d: remodel existing kitchen. remove and replace existing cabinets and counter top. new appliances new electrical subpanel and new circuits for kitchen addition new fan in bathroom and new electrical gfci outlet
Valuation:
$15,000
Permit #:
202209192680
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel (e) bathroom on 2nd fl. addition new fan & light hand dryer and new circuit retile shower and floors replace (e) plumbing fixtures with new. common use bathroom in kind remodel
Valuation:
$28,000
Permit #:
202311171023
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Revision to pa #2017-0126-8036: revise (e) structural plans to include (e) moment frame structural and grade beams. remove proposed roof parapets remove extra fire escape landing at roof. new walls at 1st floor for future adu
Valuation:
$50,000
Permit #:
202010247322
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel existing bathroom on 3rd floor. addition new fan and light hand dryer and new circuit. retile shower and floors. replace existing plumbing fixtures with new
Valuation:
$12,000
Permit #:
202010166666
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
2nd fl: remodel (e) bathroom. (e) toilet shower lavy. new drywall & tile walkin shower. new toilet & lavy. addition new fan. 2nd floor bathroom in kind
Valuation:
$15,000
Permit #:
202201317024
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
(e) building change of use/occupancy from offices to residential apartments. (n) emergency rescue stair & corridor at patio & first floor
Valuation:
$285,000
Permit #:
201701268036
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Rev 201509227720- revise structural plan s2.0 to show hold downs in (n) concrete. no pull test needed
Valuation:
$1
Permit #:
202404220441
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Convert existing unit 6 433a lombard to state mandate adu
Valuation:
$5,000
Permit #:
202502059722
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
New countertop & sinks in room 7, 14, 15 undercounter refregerators. nw outlets in rooms #7, 14, 15 microwave oven. new subpanels in rooms 7, 14, 15 addition nw sink on 3rd floor hallway patch walls with nw drywall
Valuation:
$24,000
Permit #:
201811014703
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Remodel at 2nd fl. romm #1 (n) undercounter refrigerator microwave and cabinets some electrical work remodel at 3rd fl. bathroom remodel (e) bathroom
Valuation:
$20,000
Permit #:
202003066447
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Remodel community kitchen in kind: 1 stove new circuits 1 hood. new floor drain. washer dryer hookup on 2nd floor. addition new kitchenette to unit #312 on 4th floor. new 2 buyrner hot plate hood counter sink faucet refrigerator and cabinets. minor electrical & plumbing
Valuation:
$22,300
Permit #:
201804035316
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Remove and replace 179 windows on exterior of building - replace with aluminum clad wood windows double hung. no alteration of 12 original wood windows on bush street facade. no other work
Valuation:
$135,000
Permit #:
201709137952
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Unit #48 kitchen& bathroom remodel no change in wall and openeing layout remodel (e) kitchen in kind. remove and replace kitchen cabinets in kind. new countertop new appliances remodel one (e) bathroom. remove and replace (e) wall & floor tiles. replace bathroom fan. new electrical wiring in kitchen
Valuation:
$20,000
Permit #:
201712045346
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Remodel at 2nd floor units #10 & #13. unit #10: (n) refrigerator sink and microwave oven upgrade electrical & plumbing. unit #13: (n) refrigerator sink and microwave oven upgrade electrical & plumbing. (n) closet remodel (e) bathroom maher na
Valuation:
$20,000
Permit #:
201804196760
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Remodel at 3rd floor room 31: addition a sink electric cooktop cabinets hood minor electrical and plumbing work. change 2 windows like for like new drywall. no reduction in the residential guestroom total of 25. n/a for maher
Valuation:
$6,000
Permit #:
201711093668
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Remove & replace inks in community kitchen & unit #312. new floor drain in community kitchen. replumbing existing drain & water supply for existing washer & dryer on 2nd fl
Valuation:
N/A
Permit #:
PP20180404282
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Survey inspection permit only
Valuation:
N/A
Permit #:
E202202188497
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
#4, 7, 9, 12- comply w/nov #201787851 remodel 4 rooms room #4 - new bathroom; room #7 #9 & #12 - new kitchenette. n/a maher ordinance
Valuation:
$40,000
Permit #:
201709209138
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
85 - residential ...
Similar Contractors See more
128
BZ Score
$23K
Avg Project
-
Projects
142
BZ Score
$25K
Avg Project
-
Projects
142
BZ Score
$6.5K
Avg Project
-
Projects
EW Lum Construction Co Inc Reviews
BuildZoom hasn't received any reviews for EW Lum Construction Co Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you a plumber in your area today
We'll search our vast network of Plumbers and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
EW Lum Construction Co Inc License info
Verified License
| License # | 456291 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for EW Lum Construction Co Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 724273 |
| Status | Inactive |
| State | California |
| Type | General Building |
| Business Type | 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 EW Lum Construction Co Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
23
Permits
- Building permit records show that EW Lum Construction Co Inc has worked on 23 permitted projects.
EW Lum Construction Co Inc Employees
EL
Edwin Wing Lum
Rmo/Ceo/Pres