×

We'll help you find the right contractor.

Share your project details and we'll reach out to Ionian Builders LLC so you don't have to.

We'll also connect you with other vetted professionals who are a strong match for your project. That way, you can compare quotes, meet different contractors, and make the choice that feels right for you.

Get Started
Is this your business? Claim now >

Location and Projects

Address
4705 AUDREY DR, Castro Valley, CA, 94546
Use our bidding system to request a quote

Ionian Builders Construction

Serving Castro Valley and the surrounding Bay Area, Ionian Builders LLC specializes in residential remodeling and construction projects. The company undertakes kitchen and bathroom remodels, home additions, and a range of interior and exterior improvements tailored for homeowners looking to update or expand their living spaces. With three years in business, Ionian Builders handles projects for single-family and multi-family properties, focusing on solutions that enhance both function and aesthetics. The team works closely with clients on layout changes, fixture upgrades, and finish selections, guiding them through each phase of the construction process. Ionian Builders also addresses structural updates and repairs as part of larger renovation undertakings. The company is based in Castro Valley and works with clients throughout Alameda County and neighboring communities.

Ionian Builders LLC Contact Information

Phone: (415) 369-7779 Edit
Address: 4705 AUDREY DR, Castro Valley, CA 94546 Edit

Ionian Builders LLC Castro Valley

Quality

104
91st percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Ionian Builders LLC has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.

Activity

1 project
2026
3 projects
2025
1 project
2023
Our building permit records indicate that Ionian Builders LLC has worked on at least 5.0 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.

Pricing

1 project
$20k-$50k
2 projects
$50k-$100k
1 project
$100k-$250k
Value Not Public: 1.0 project
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.

Ionian Builders LLC Reviews
5 out of 5 stars, based on 2 reviews

  • By Kimberly J.
    March 12, 2025
    Build my pergola
    $1,800

    Loved working with this company. Konstantine is extremely professional. Call for a quote and had it to me by the end of day just like he said. Arrived on time and the work that he and is workers provided was excellent. Also, his prices are reasonable. I give this company 5 stars.

  • By Randall M.
    February 26, 2025

    We highly recommend Ionian Builders for their quality workmanship and professionalism. Every project they did for us was a success, from the garden shed they built from scratch to the house painting they did to repair a trouble spot in the stucco on our chimney. When they finished, the repair matched the existing paint to a tee. No project was too small or too large, and they took on everything we asked of them, from repairing our skylight to replacing a broken tile in our shower stall. We have already scheduled them to return for some much-needed work on our deck and look forward to having them back.

Please write a review about Ionian Builders LLC
1 Rate this contractor
Click stars to rate
2 Provide a detailed review of this contractor.


Building Permits by Ionian Builders LLC

Sort by: Notable Notable | Date Date | Job Value Job Value
Building permit
2025-03-10
An interior alteration of 180 square feet to a single family two story residence including modifications to the downstairs bathroom moving furnace to attic and washer/dryer to second floor in old location of furnace flipping subpanel to garage wall wood fireplace chase removal and electrical re-wiring of dining room bathroom laundry. additionally the application proposes to alter the ... see more
Valuation:
$60,000
Permit #:
BLD2025-00653
Status:
issued
Fee:
$2,021
Permit Type:
Alteration
Building Type:
N/A
Building pre-application
2025-01-21
An interior/exterior alteration to a single familary two story residence including modifications to the downstairs bathroom moving furnace to attic and washer/dryer to second floor in old location of furnace flipping subpanel to garage wall wood fireplace chase removal and electrical re-wiring of dining room bathroom laundry. additionally the application proposes to alter the window a... see more
Valuation:
$60,000
Permit #:
BPA2025-00175
Status:
filed
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Ref to building pa# 202411134905: remodel 1 ktchen & 1 bathroom 1 new bathroom new sub panel 100 amp
Valuation:
N/A
Permit #:
E202509025248
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential accessory dwelling unit
2023-12-15
Adding 650 sqft adu to existing property
Valuation:
$240,000
Permit #:
BRADU-23-0052
Status:
expired
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Residential - combo
2025-04-15
Residential remodel- convert 446sf attic into 1 bedroom loft w office and full bathroom. install (2) new windows and (4) skylights (bldg/elec/plumbing/mech)
Valuation:
$83,200
Permit #:
CB24-0430
Status:
issued
Fee:
$5,640
Permit Type:
N/A
Building Type:
N/A
Residential alteration permit
2026-01-02
Simple kitchen renovation remove and replace
Valuation:
$25,000
Permit #:
BRALT-26-0002
Status:
applied
Fee:
$217
Permit Type:
Interior remodel
Building Type:
N/A
Remodel 1 kitchen 1 bathroom addition 1 new bathroom 2 tankless water heater with 1 shower pan & underground
Valuation:
N/A
Permit #:
PP20250902463
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A

Similar Contractors See more

License # 864465
242
BZ Score
$59K
Avg Project
-
Projects
License # 1090101
193
BZ Score
$200K
Avg Project
-
Projects
License # 1126794
188
BZ Score
$30K
Avg Project
-
Projects