Updated: Jul 09, 2026
Location and Projects
Address
1072 HOLLYGROVE LN, Altadena, CA, 91001
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Alexander Building Construction
Led by Los Angeles native Alexander Symcox, Alexander Building Co serves Altadena and the surrounding neighborhoods with full-service residential construction. The company has over 15 years of experience collaborating with architects and engineers on new home construction, additions, ADUs, and remodels. Projects span a wide range of architectural styles, from 1890s Victorians and 1920s bungalows to 1960s post and beam houses and contemporary homes. Based in “The Meadows” of Altadena, the company works closely with homeowners from the initial design phase through permitting and construction. Alexander Building Co is particularly focused on supporting the rebuilding and revitalization of the Altadena area, leveraging its expertise in varied property types and local geography.
Alexander Building Co Services
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Alexander Building Co Contact Information
Phone Number: (310) 266-2662
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Address: 1072 HOLLYGROVE LN, Altadena, CA 91001
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Alexander Building Co Altadena
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alexander Building Co has a BuildZoom score of 108, which places them above 95% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
2 projects
|
2024 |
|
7 projects
|
2023 |
Our building permit records indicate that Alexander Building Co has worked on at least
12.0 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 Alexander Building Co mostly works on
home addition
projects.
Pricing
|
4 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
3 projects
|
$100k-$250k |
The typical size of their permits is approximately $14,000. 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 Alexander Building Co
This is a sample of this contractor's permits. Click here to access their complete permit history.
Renovation and addition to single family home and attached deck per soils report recommendations
Valuation:
$100,000
Permit #:
24014-10000-03656
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Re-roof with class a or b material weighing less than 6 pounds per sq. ft. over existing solid sheathing __20____squares. class a roof covering is required within very high fire hazard severity zone (vhfhsz). for residential roof replacement > 50% of the total roof area apply cool roof product labeled and certified by cool roof rating council (crrc). cool roof may be required for non-... see more
Valuation:
$40,000
Permit #:
21016-30000-36899
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Convert detached garage to accessory dwelling unit per ab 494 and sb 229. addition [15 x 22'] addition to rear. provide one open parking space. replace concrete slab at original garage
Valuation:
$150,000
Permit #:
19014-10000-04268
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
307 sq. ft. addition to existing single family dwelling with occupied roof deck
Valuation:
$140,000
Permit #:
19014-10000-00704
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Interior remodel to relocate kitchen and laundry room convert one bedroom to den addition 1/2 bathroom change window size and enclose 6'-6 x 5'-11 area under existing roof to expand entry. all work per engineering. see comments
Valuation:
$35,000
Permit #:
18014-20000-00102
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Conversion of portion of (e) single family dwelling for attached adu per gcs 65852.2(e)(1)(a)
Valuation:
$150,000
Permit #:
21016-10000-53494
Status:
complete
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Water damage termite damage dry rot repair less than 10% of replacement cost of residential buildings
Valuation:
$14,000
Permit #:
23016-90000-30460
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Addition and remodel to existing single family dwelling. (1 of 3)
Valuation:
$200,000
Permit #:
20014-10000-00571
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit to permit #18030-20000-07352 to: change the contractor from tip top construction to archetype inc
Valuation:
N/A
Permit #:
18030-10001-07352
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Supplemental permit ot permit #18014-20000-04555 to: change the contracotr from tip top construction to archetype inc
Valuation:
N/A
Permit #:
18014-10001-04555
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New retaining wall. (2 of 3)
Valuation:
$200,000
Permit #:
20020-10000-00316
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New accessory living quater single story 259sqft 1 of 3
Valuation:
$130,000
Permit #:
21010-10000-02094
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(2) door change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24
Valuation:
$6,000
Permit #:
19016-10000-24380
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Window change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all residential buildings three stories or less per section 152(b) of title 24. re-stucco replace drywall. (no new walls added) for residential buildings only
Valuation:
$6,000
Permit #:
14016-10000-16910
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
*eplan check* convert existing detached garage to adu addition attached trellis
Valuation:
$50,000
Permit #:
21014-10000-04340
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
New uncoverred patio addition to (e) single family dwelling with 6 lactice spacing per engineer design
Valuation:
$4,000
Permit #:
22016-10000-01561
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel of bathroom in second floor of an (e) single family dwelling including moving non-bearing interior walls and replacing (1) window with same type and size
Valuation:
$20,000
Permit #:
19016-10000-15605
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remodel kitchen remove 2 fire places change out doors windows (dual glzing certified by nfrc) addition new exterior steel stairs to access 2nd floor balcony at rear and extend balcony 4 x 15.25
Valuation:
$30,000
Permit #:
18016-20000-20253
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen&(3)bathroom remodel for residential buildings (no structural changes). includes kitchenette replace drywall (no new walls added) for single family dwellings and duplexes only (12)window change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all resi... see more
Valuation:
$15,000
Permit #:
18016-10000-04984
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Kitchen&(3)bathroom remodel for residential buildings (no structural changes). includes kitchenette replace drywall (no new walls added) for single family dwellings and duplexes only (12)window change-out (same size & type) for residential buildings. dual glazing labeled and certified by national fenestration rating council (nfrc) is required for doors and windows replaced in all resi... see more
Valuation:
$15,000
Permit #:
18016-10000-04984
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Alexander Building Co License info
Verified License
| License # | 980164 |
| 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 Alexander Building Co at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | California Insurance Company |
59
Permits
- Building permit records show that Alexander Building Co has worked on 59 permitted projects.
Alexander Building Co Employees
AS
Alexander Brian Symcox
Owner