Updated: Apr 26, 2026
Location and Projects
Address
1230 EAST POPLAR AVE APT 3, San Mateo, CA, 94401
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Xlt Builders Construction
Serving homeowners in San Mateo, Xlt Builders brings over two decades of local experience to residential construction and remodeling projects. The company specializes in kitchen and bathroom renovations, home additions, and whole-house remodels. Xlt Builders manages projects for single-family homes, providing services that range from updating living spaces to complete structural changes. With 22 years of experience, they are familiar with the building requirements and styles found throughout the San Mateo area. Their portfolio highlights projects that include modernizing older homes, expanding living areas, and enhancing functionality for growing families. Xlt Builders also provides project management throughout the construction process, coordinating trades and ensuring that work progresses efficiently on occupied properties.
Xlt Builders Services
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Xlt Builders Contact Information
Phone Number: (650) 921-0266
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Address: 1230 EAST POPLAR AVE APT 3, San Mateo, CA 94401
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Xlt Builders San Mateo
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Xlt Builders has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
8 projects
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Xlt Builders has worked on at least
17.0 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
|
4 projects
|
Home Additions |
|
3 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Xlt Builders mostly works on
home addition
and kitchen remodel
projects.
Pricing
|
2 projects
|
< $5k |
|
5 projects
|
$5k-$20k |
|
4 projects
|
$20k-$50k |
|
2 projects
|
$50k-$100k |
|
3 projects
|
$100k-$250k |
The typical size of their permits is approximately $20,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Scope of work: -construct (n) 201 sq. ft. addition (from sub-floor) on the first floor for (n) bathroom and (n) closet. -construct (n) 240 sq. ft. covered deck on the first floor. -construct (n) 1400 sq. ft. deck on the second floor with (n) outdoor kitchen. (two grills burner and sink). -construct (n) 1640 sq. ft. wood deck to include outside kitchen. -convert full bathroom into (n) ... see more
Valuation:
$139,366
Permit #:
2024 067215 RS
Status:
issued
Fee:
$4,312
Permit Type:
Single-family
Building Type:
N/A
1 the project is an attached adu addition at the rear of the property with an 873 sf + 66 sf porch.- 2 bedrooms -2 bathrooms-laundry. open space for kitchen living and dining. front porch. 60 sf included on 684 sf. (40'4 x23'3 avg) in one story
Valuation:
$325,000
Permit #:
BISUB22-02658
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit 716 - master bathroom remodeling - fixture replacement with sink addition and rotate the stackable washer and dryer; 2nd bathroom - fixture replacement and replace pocket door by swing door; finishing floor replacement at entire apartment carpet and wood floor by engineered wood floor with
Valuation:
$90,000
Permit #:
202209071994
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Drywall repair stucco repair 220a dedicated circuit for the stove 120a for dishwasher
Valuation:
$4,500
Permit #:
BLD2025-07629
Status:
triage
Fee:
$150
Permit Type:
Alteration
Building Type:
N/A
Attached adu addition at the rear of the property with an 873 sf + 66 sf porch.-
Valuation:
$325,000
Permit #:
BIR22-010886
Status:
approved
Fee:
$31,753
Permit Type:
N/A
Building Type:
N/A
Construct 597 sf detached one bedroom one bathroom adu at rear of property. deferred roof truss. ***new adu address is 3152 el sobrante st. *** rev1; adu sewer lateral hooked to main house sewer lateral (issued 10/10/24) def1: truss design & engineering calcs (issued 12/3/24)
Valuation:
$90,000
Permit #:
BLD24-00779
Status:
final
Fee:
$5,860
Permit Type:
N/A
Building Type:
N/A
Scope of work include: 1) addition of 61 sq. ft in the kitcehn with a major kitchen remodel 2) addition of 81 sq. ft to enclose (e) porch 3) (2) minor bathroom remodels
Valuation:
$48,742
Permit #:
2021 050735 RS
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
Interior remodeling of bathroom and laundry area (85 sf). powder room to become full bathroom with new shower. laundry alteration to allow side by side appliances. interior wall between bathroom and laundry room to be relocated and new pocket door to be installed. guillermo marroquin 650-921-0266 “it is the permittee’s obligation and responsibility to ensure that all work associated w... see more
Valuation:
N/A
Permit #:
BLD2020-02297
Status:
final
Fee:
$1,167
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel to include removal of walls between family room and kitchen and installation of new support beam. install new kitchen cabinets appliances and fixtures; upgrade plumbing and electrical install led lights
Valuation:
N/A
Permit #:
BLD2021-02677
Status:
issued
Fee:
$1,978
Permit Type:
N/A
Building Type:
N/A
Remodel kitchen and bathroom
Valuation:
$150,000
Permit #:
B2022-0117
Status:
final
Fee:
$3,051
Permit Type:
Alteration
Building Type:
N/A
Repair damage from vehicle collision. siding framing deck
Valuation:
$20,000
Permit #:
B2023-0051
Status:
final
Fee:
$1,195
Permit Type:
Alteration
Building Type:
N/A
Bathroom remodel; shower tiles; 2 new lights; plumbing and drain; exhaust fan
Valuation:
$16,500
Permit #:
BLDG-2024-03037
Status:
issued
Fee:
$451
Permit Type:
N/A
Building Type:
N/A
Bathroom addition into (e) footprint. framing walls. no structural work. 2 outlest 5 lights faucet shower valve toilet
Valuation:
$22,000
Permit #:
202106233055
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Bathroom remodel like for like. (2lights 2 switches 1 receptacles and 1 fan)
Valuation:
N/A
Permit #:
E202409257104
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1 bathroom and kitchen - no walls moving - like for like
Valuation:
$25,000
Permit #:
B24-1761
Status:
final
Fee:
$1,779
Permit Type:
Alterations
Building Type:
N/A
R&r wh addition recessed lights relocate subpael from closet
Valuation:
N/A
Permit #:
REV24-0255
Status:
issued
Fee:
$373
Permit Type:
Alterations
Building Type:
N/A
Window replacement. roof repairs. (ref pa# 202407247206)
Valuation:
$13,600
Permit #:
202407247194
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Adu sewer lateral hooked to main house sewer lateral
Valuation:
N/A
Permit #:
BLD24-00779-REV1
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Reroofing (ref pa# 202407247194)
Valuation:
$16,500
Permit #:
202407247206
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Remove and replace (1) sliding door
Valuation:
$5,500
Permit #:
BRES2024-0505
Status:
issued
Fee:
$577
Permit Type:
Alteration
Building Type:
N/A
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Verified License
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Xlt Builders License info
Verified License
| License # | 1057265 |
| Status | Active |
| State | California |
| Type | General Building |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Xlt Builders at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Required
| Status | Not Required |
- BuildZoom verified in September, 2022 that this contractor does not need a license to be a contractor in California.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Bonded
| Bonded Agent | This License Filed A Contractor's Bond With |
| Bond Value | $25,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
22
Permits
- Building permit records show that Xlt Builders has worked on 22 permitted projects.
Xlt Builders Employees
GG
Guillermo Rohelio Marroquin Garcia
Rmo / Ceo / Pres