Updated: Jan 14, 2026
Location and Projects
Address
18904 SANTA MARIA AVE, Castro Valley, CA, 94546
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Caistor Construction
Serving homeowners across Castro Valley and the surrounding East Bay area, Caistor Construction specializes in residential remodeling and renovation projects. With over two decades of experience, the company provides expertise in kitchen and bathroom remodels, home additions, and general interior renovations. Caistor Construction works directly with clients to update existing homes, handling both minor upgrades and larger structural changes. In addition to interior work, the company provides exterior improvements, including deck construction and siding replacement. The firm's project portfolio includes a range of single-family homes, reflecting broad knowledge of the region’s building styles and permitting requirements. Drawing on 22 years in the industry, Caistor Construction brings practical solutions to a variety of residential construction challenges for homeowners in Alameda County.
Caistor Construction Services
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Caistor Construction Contact Information
Phone Number: (510) 390-7375
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Address: 18904 SANTA MARIA AVE, Castro Valley, CA 94546
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Caistor Construction Castro Valley
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Caistor Construction has a BuildZoom score of 101, which places them above 88% of 336,931 contractors in California.
Activity
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Caistor Construction has worked on at least
3.0 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.
Pricing
|
1 project
|
$20k-$50k |
|
1 project
|
$50k-$100k |
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.
Express kitchen like-for-like remodel permit - residential
2023-03-20
Remove existing countertops cabinets drywall. addition electrical circuits as required new receptacles lights & switches. plumbing to remain in same location new finishes. reroute range hood vent. new drywall cabinets countertops & wood flooring
Valuation:
$40,000
Permit #:
CBW23-0042
Status:
issued
Fee:
$1,841
Permit Type:
N/A
Building Type:
N/A
To remodel the kitchen/family room (700 sf) per plans & calc's: 1. replace the bearing wall between them with engineeered beam & posts. 2. remove 2 windows add/relocate 2 windows and french door. install retrofit hd's and shearwalls per plans. 3. remodel kitchen. 4. install gas fireplace insert. 5. deck & stairs at french door (80 sf)
Valuation:
N/A
Permit #:
BLD2020-01615
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
To building an addition next to the garage for an accessory dwelling unit (adu 640 sf) which will have bedroom bathroom kitchen/living/dining room per plans & calc's. also a site retaining wall & walkway below the adu
Valuation:
N/A
Permit #:
BLD2019-00483
Status:
final
Fee:
N/A
Permit Type:
Simple permit
Building Type:
N/A
(p) - plumbing - 3+ residential units or commercial (building)
2019-07-11
Plumbing related to bathroom remodel to include replacement of existing tub w new shower new vanity sink toilet tile. no change to wall layout or footprint. unit 10e
Valuation:
N/A
Permit #:
P1900631
Status:
final
Fee:
$252
Permit Type:
N/A
Building Type:
N/A
(m) - mechanical - 3+ residential units or commercial (building)
2019-07-11
Mechanical related to bathroom remodel to include replacement of existing tub w new shower new vanity sink toilet tile. no change to wall layout or footprint. unit 10e
Valuation:
N/A
Permit #:
M1900666
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
(e) - electrical - 3+ residential units or commercial (building)
2019-07-29
Electrical related to bathroom remodel to include replacement of existing tub w new shower new vanity sink toilet tile. no change to wall layout or footprint. unit 10e
Valuation:
N/A
Permit #:
E1901033
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
To building a 24'x12 garage addition (288 sf) to the front of the existing garage. (p/c for this permit was collected under bld2019-00483)
Valuation:
N/A
Permit #:
BLD2019-00482
Status:
final
Fee:
N/A
Permit Type:
Simple permit
Building Type:
N/A
(b) - building alteration - 3+ residential units or commercial (building)
2019-07-29
Bathroom remodel to include replacement of existing tub w new shower new vanity sink toilet tile. no change to wall layout or footprint. unit 10e
Valuation:
$20,000
Permit #:
B1901576
Status:
final
Fee:
$839
Permit Type:
N/A
Building Type:
N/A
Main panel upgrade 100a to 200a and sub panel upgrade 100a to 200a. kitchen remodel install (n) circuits dishwasher and second sink. additional bar cabinetry ice maker bar fridge in dining room rev 1 - remodel of primary bathroom and hall bathroom remove and replace vanities countertops fixtures wall and floor coverings. rev 2 - added scope of (n) water bottle filler in rear hallway a... see more
Valuation:
$84,500
Permit #:
BRALT-24-0433
Status:
final
Fee:
$2,261
Permit Type:
Interior remodel
Building Type:
N/A
Addition tankless water heater replacement to scope of work - (e) location -
Valuation:
N/A
Permit #:
BRALT-23-0289
Status:
final
Fee:
$190
Permit Type:
Revisions
Building Type:
N/A
Plumbing (fixtures appliances gas test) for 68 sf addition on top level of single family dwelling to be a bathroom beside existing bedroom. addition new supports at foundation level to support addition. replace existing rear sliding glass doors with a new opening for windows and a single door. relocate interior door between office and sitting room hallway to be closer to kitchen and i... see more
Valuation:
N/A
Permit #:
RP1801355
Status:
final
Fee:
$489
Permit Type:
N/A
Building Type:
N/A
Mechanical (fan vent) for 68 sf addition on top level of single family dwelling to be a bathroom beside existing bedroom. addition new supports at foundation level to support addition. replace existing rear sliding glass doors with a new opening for windows and a single door. relocate interior door between office and sitting room hallway to be closer to kitchen and interior stairs. re... see more
Valuation:
N/A
Permit #:
RM1801204
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
Electrical (circuits lights switches receptacles) for 68 sf addition on top level of single family dwelling to be a bathroom beside existing bedroom. addition new supports at foundation level to support addition. replace existing rear sliding glass doors with a new opening for windows and a single door. relocate interior door between office and sitting room hallway to be closer to kit... see more
Valuation:
N/A
Permit #:
RE1801897
Status:
final
Fee:
$261
Permit Type:
N/A
Building Type:
N/A
Electrical (125amp main service upgrade lights switches receptacles a subpanel and dedicated circuits) to convert basement to office mud room and legalize bathroom 448 sq/ft) additional conditioned space as part of (e) single family dwelling replace two windows no change to size/location
Valuation:
N/A
Permit #:
RE1801894
Status:
final
Fee:
$529
Permit Type:
N/A
Building Type:
N/A
To addition to and remodel a single family dwelling per plans & calc's:1) to building a 3'x17'3 addition (53 sf) to the rear of the kitchen under an existing patio roof (bld2000-3058) with a landing & stairs. skylite in patio roof. 2) to remodel kitchen (160 sf remodel). replacing bearing wall with engineered header & posts
Valuation:
N/A
Permit #:
BLD2016-02056
Status:
FINALED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
68 sf addition on top level of single family dwelling to be a bathroom beside existing bedroom. addition new supports at foundation level to support addition. replace existing rear sliding glass doors with a new opening for windows and a single door. relocate interior door between office and sitting room hallway to be closer to kitchen and interior stairs. remodel kitchen to include n... see more
Valuation:
$80,000
Permit #:
RB1800821
Status:
final
Fee:
$3,638
Permit Type:
N/A
Building Type:
N/A
Express bathroom like-for-like remodel permit - residential
2021-09-11
Remodel of primary bedroom & bathroom: remove existing fixtures vanity tile @ shower flooring and drywall as needed. addition 2 receptacles upgrade lighting to led cans and sconces replace shower valves/heads with 2 new ones new waterproof membrane tile @ shower walls & pan vanity countertop fixtures flooring trim & paint
Valuation:
$12,500
Permit #:
CBW21-0065
Status:
expired
Fee:
$1,411
Permit Type:
N/A
Building Type:
N/A
Plumbing (fixtures appliances gas test water heater) to convert basement to office mud room and legalize bathroom 448 sq/ft) additional conditioned space as part of (e) single family dwelling replace two windows no change to size/location
Valuation:
N/A
Permit #:
RP1801354
Status:
final
Fee:
$503
Permit Type:
N/A
Building Type:
N/A
Kitchen remodel to include new layout remove wall new cabinets countertop sink fixtures appliances new exhaust fan electrical new lighting replace windows and enlarge door per plans 2/17/17 - revision: addition new structural beam and upgrade electrical panel from 100a to 200a service
Valuation:
N/A
Permit #:
BIAL17-000572
Status:
final
Fee:
$2,271
Permit Type:
N/A
Building Type:
N/A
Mechanical (fan vent) to convert basement to office mud room and legalize bathroom 448 sq/ft) additional conditioned space as part of (e) single family dwelling replace two windows no change to size/location
Valuation:
N/A
Permit #:
RM1801202
Status:
final
Fee:
$207
Permit Type:
N/A
Building Type:
N/A
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Caistor Construction License info
Verified License
| License # | 725563 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Caistor Construction at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Wesco Insurance Company |
32
Permits
- Building permit records show that Caistor Construction has worked on 32 permitted projects.
Caistor Construction Employees
TC
Timothy Peter Caistor
Owner