Updated: May 06, 2026
Location and Projects
Address
1980 San Carlos Ave, San Carlos, CA, 94070
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Alef Construction Corporation
Alef Construction Corporation, 1980 San Carlos Ave, San Carlos, CA (Employees: Alfonso Martin Perez and Efren Ramirez Esquivias) holds a General Building license and 3 other licenses according to the California license board.
Their BuildZoom score of 111 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 Alef Construction Corporation, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Alef Construction Corporation Services
Start a project today:
Custom Home Build
New Home Construction
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Other Residential Remodel
Framing
Wood Fences
Backsplash and Countertops
Stonework
Tile Flooring
Other Stone and Tile
Drywall
Interior Plaster
Flatwork Concrete
Foundations
Other Concrete
Garage Construction
Gutters and Flashing
Patios
Pole Barn
ADU
Small Multi-Family New Cons...
Small Multi-Family Remodel ...
Whole Home Remodel
Modular Home Construction
Pool House
Sunrooms and Greenhouses
Other Secondary Structure N...
Addition
Vertical Addition
Horizontal Addition
Vertical and Horizontal Add...
Alef Construction Corporation Contact Information
Phone Number: (650) 508-1569
Address: 1980 San Carlos Ave, San Carlos, CA 94070
Alef Construction Corporation San Carlos
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alef Construction Corporation has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
12 projects
|
2025 |
|
10 projects
|
2024 |
|
10 projects
|
2023 |
Our building permit records indicate that Alef Construction Corporation has worked on at least
32.0 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
|
16 projects
|
Home Additions |
|
9 projects
|
Multi-room remodels |
|
6 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Alef Construction Corporation mostly works on
home addition
and multi-room remodel
projects.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
8 projects
|
$100k-$250k |
|
7 projects
|
$250k-$500k |
|
5 projects
|
$500k-$1mil |
The typical size of their permits is approximately $260,900. 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 Alef Construction Corporation
This is a sample of this contractor's permits. Click here to access their complete permit history.
Demolish existing deck between dwelling and detached garage construct single story addition of 263 sq ft at same location to create a master bathroom and walk in closet thereby attaching garage to dwelling. interior alterations @ 413 sq ft to conform to addition. revision #1 - reroof - remove & replace (e) roof with comparable shingles.14 squares no new plywood.(approved 5/20/24)
Valuation:
$230,240
Permit #:
BD-2023-290333
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition of 600 sf at rear of single family dwelling and remodel 44 square feet of (e) residence for (n) attached 644sf adu. main residence alteration under permit bd-2022-287082. plan approved under permit bd-2022-287082
Valuation:
$274,949
Permit #:
BD-2023-289263
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel (e)interior dining (e)family room and addition (n)den/office (n)butler pantry and (n)mud room. addition 300sf for (n)entry at front. demolish (e)detached garage. adu permit under bd-2023-289263
Valuation:
$659,524
Permit #:
BD-2022-287082
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling remodel of 969sf. - 0.5 level: bathroom remodel new access doors to yard laundry bedroom. 1st level: kitchen remodel vault family room ceiling new access doors to yard remove fireplace/chimney. rear yard: new deck with outdoor gas fireplace lower patio with outdoor kitchen *10/25/24 change of contractor from ab west construction to alef construction
Valuation:
$185,370
Permit #:
BD-2021-283160
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
A single family residence to addition 16 square feet to the kitchen and a remodel of 632 square feet to include 3 bathrooms and kitchen area rev#1: change in foundation detail rev#2:enlarge powder room remodel laundry mud room and remove fireplace from living room
Valuation:
$125,000
Permit #:
BLD2024-00345
Status:
final
Fee:
$5,813
Permit Type:
Addition
Building Type:
N/A
Residential addition alteration to existing residence
2023-03-09
Interior remodel to kitchen and dining room. 1/2 bathroom added to existing laundry room. 1 door and 1 window replaced resubmittal #1 rxc, 12/15/22 - respond to building *it is the permittee’s obligation and responsibility to ensure that all work associated with this permit complies with all current orders of the health officer of the county of san mateo related to the novel coronavir... see more
Valuation:
N/A
Permit #:
BLD2022-02300
Status:
final
Fee:
$18,340
Permit Type:
N/A
Building Type:
N/A
Additon remodel: demolish most all interior and exterior walls (separate demolish permit) eliminating 490 sq. ft. thereby reconfiguring remaining1815 sf by enlarging garage to 520 sf remodel kitchen great room laundry master bed/bath 1/2 bathroom and foyer. installing stairway to new 1366 sf second floor consisting of 4 bedrooms 2 baths. foundation improvements to accommodate second ... see more
Valuation:
N/A
Permit #:
BLD2020-02220
Status:
final
Fee:
$22,968
Permit Type:
N/A
Building Type:
N/A
1st floor: enclosed existing rear patio to den. addition sfolding/sliding door 2nd floor: - vertical addition - addition 3 bedrooms 2 bathrooms and loft
Valuation:
$369,794
Permit #:
202112174663
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
28 - 2 family dwe...
Apt# 8: remodel (e) kitchen & bathroom new lighting in common areas (e) hallways new electrical ligting & plumbing only in apartment. 8 and hallways no work performed in other areas building does not have a fire sprinkler system
Valuation:
$70,000
Permit #:
202012311978
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
24 - apartments
Addition of 277sf and remodel of 1 500sf. new front and rear additions to include new entryway expanded kitchen and new bedroom in the front master suite/bath and expanded living room dining room in the rear remodel (2) bathrooms and guest bedroom. convert 53sf of garage to living space. * tree protection required - es revision #1 - replace original approved wood shingle siding with t... see more
Valuation:
$163,874
Permit #:
BD-2019-271794
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Interior remodel exterior changes new roof windows
Valuation:
$280,000
Permit #:
BLD2024-00119
Status:
final
Fee:
$12,139
Permit Type:
Interior remodel
Building Type:
N/A
1st & 2nd floor addition convert garage into jadu(1498sqft)
Valuation:
$445,000
Permit #:
BLD2023-00390
Status:
final
Fee:
$20,520
Permit Type:
Residential addit...
Building Type:
N/A
934sqt addition 937sqft adu conversion
Valuation:
$341,120
Permit #:
BLD2023-00143
Status:
final
Fee:
$17,020
Permit Type:
Residential addit...
Building Type:
N/A
Residential addition alteration to existing residence
2025-09-26
Single family residential reconstruction to consist of new second story addition and ground level additions for an existing one-story home. renovation of existing lower floor areas new entry porch at front of residence addition of new attached (2) car garage addition 2100 sf alteration 2172 sf new garage 579 sf porch 76 sf resub 1- sge- 3/18/24- building pln
Valuation:
N/A
Permit #:
BLD2023-01600
Status:
final
Fee:
$40,111
Permit Type:
N/A
Building Type:
N/A
Seperate a d u (1163) (n) garage (429sqft)
Valuation:
$260,900
Permit #:
BLD2019-01004
Status:
final
Fee:
$10,678
Permit Type:
Second dwelling unit
Building Type:
N/A
Single family (alteration/repair) - kitchen & bathroom remodel (flat)
2025-02-21
Like-for-like bathroom remodel to main bathroom located on bottom floor. no wall alterations or layout changes
Valuation:
$45,000
Permit #:
BD-2024-296551
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family dwelling - remodel kitchen and dining room new cabinets counter-tops island and appliances replace (4) windows like for like relocate sliding glass door and install new concrete landing remove wall between kitchen and dining room. include electrical and plumbing. revision 1: replace 3 windows and increase size of 4 windows at 2nd floor. approved 9/3/19
Valuation:
$54,000
Permit #:
BD-2019-271946
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New duplex a: 1350 sq ft b 1204 sq ft; 3 car garage 764 sq
Valuation:
$663,600
Permit #:
B20-1613
Status:
final
Fee:
$102,819
Permit Type:
Multi unit
Building Type:
N/A
Remodel of 1 364sf to to 1st and 2nd floor remodel and enlarge kitchen relocate bathroom on 1st floor. remodel at rear of 1st floor to consist of a full bathroom craft room alteration of walls and new window opening. 2nd floor - remodel of hallway bathroom and master bedroom and bathroom. upgrade electrical main/subpanel. (there shall be no plumbing fixtures in craft room.) revision 1... see more
Valuation:
$30,000
Permit #:
BD-2018-269583
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition (560-sf) & interior remodel
Valuation:
$245,000
Permit #:
BLD2023-00524
Status:
final
Fee:
$14,343
Permit Type:
Residential addition
Building Type:
N/A
Alef Construction Corporation Reviews
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Verified License
BuildZoom confirmed this contractor's license
Alef Construction Corporation License info
Verified License
| License # | 854347 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Alef Construction Corporation at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 102733 |
| Status | Active |
| City | South San Francisco |
| Type | Contractor |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Alef Construction Corporation with the The City of South San Francisco, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 845991 |
| 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.
Check this license's status for Alef Construction Corporation at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 400093 |
| Status | Inactive |
| State | California |
| Type | General Building, Plumbing |
| 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.
Check this license's status for Alef Construction Corporation at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Standard Fire Insurance Company |
116
Permits
- Building permit records show that Alef Construction Corporation has worked on 116 permitted projects.
Alef Construction Corporation Employees
AP
Alfonso Martin Perez
Rmo / Ceo / Pres
EE
Efren Ramirez Esquivias
Officer