Location and Projects
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 Services
Ionian Builders LLC Contact Information
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Ionian Builders LLC Castro Valley
Quality
Activity
|
1 project
|
2026 |
|
3 projects
|
2025 |
|
1 project
|
2023 |
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 |
Ionian Builders LLC Reviews
5 out of 5 stars, based on
2
reviews
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By Kimberly J.March 12, 2025Build my pergola$1,800
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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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
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Ionian Builders LLC License info
Verified License
| License # | 1050163 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Ltd Liability |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Ionian Builders LLC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-F200665-1 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Ltd Liability |
- According to the United States Environmental Protection Agency, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Ionian Builders LLC at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Insured
| Insurer | Obsidian Specialty Insurance Company |
| Insured up to | $2,000,000 |
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
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.