Builders who sweat the details.
Ark Haven Builders is a San Diego Class B general contractor with an in-house interior design team. We build custom homes, whole-home remodels, additions, ADUs, and commercial projects — and we stay accountable for every part of the work we contract to do.
The gap we were built to close.
Most construction projects fail in the same place: the gap between the people who designed it and the people who build it. A set gets drawn; the contractor discovers it does not work, or costs twice the estimate, or conflicts with the structural drawings. What follows is months of change orders and a client caught in the middle of an argument between companies they are paying.
Founded by Sebastian Rey Gonzalez, Ark Haven was built to close that gap. We review the drawings for constructability and budget before a shovel moves, and our interior designers and construction team sit in the same office. When a detail does not work, we catch it on paper instead of in the field — and fixing it costs an afternoon rather than a change order.
We deliver custom homes, whole-home remodels, additions, ADUs, commercial projects, and multifamily developments across San Diego County. Different project types, same approach: one team, one contract, and one person accountable for the result.
Principles, not slogans.
Design Integrity
In-house interior design keeps the original intent intact from the approved drawings through final install.
One Accountability
One team holds interiors and construction, so a problem in the field is ours to solve rather than ours to argue about.
Straight Answers
Real numbers, real timelines, and bad news early. We would rather lose a project than win it on an optimistic estimate.
Craft That Lasts
The finish work is what you live with every day. We build to a standard that still reads well in twenty years.
Licensed, insured, accountable.
Ark Haven holds a California Class B General Contractor licence and carries full insurance. We own the build from permit in hand through certificate of occupancy.
A multidisciplinary team.
/ 01 Sebastian Rey Gonzalez
Founder & CEO
A builder and designer committed to housing accessibility, Sebastian leads Ark Haven with deep expertise in construction management, project delivery, and entitlement coordination. Former Director of Design at Gonzalez Planning & Design-Build and Plan Review Specialist for the City of San Diego.
- CSLB Class B
- GPRO: Operations & Maintenance
- B.S. Construction Management (in progress)
/ 02 Gregory Martin
Chief Operating Officer
With over a decade managing multimillion-dollar projects, Gregory ensures Ark Haven’s operations run at institutional grade. Formerly project manager for NJR Development and General Superintendent at Habitat for Humanity. He brings the discipline of large-scale capital projects to every Ark Haven engagement.
- OSHA 30
- Fall Protection
- Schluter Installer
- PMI
/ 03 Jonathan Mitchell
Chief Strategy Officer
Jonathan leads Ark Haven’s strategic partnerships and long-term growth with deep industry expertise. Previously in executive leadership at ADU PALS, where he spearheaded housing strategies across San Diego.
- Strategic planning
- Housing market development
- Organizational growth
/ 04 Wangzhong Sheng, Ph.D.
Chief Financial Officer
Wang oversees Ark Haven’s financial strategy and resource allocation. A cross-disciplinary leader with a Ph.D. from UC San Diego and prior leadership at Cellmyx, Bristol Myers Squibb, and ChromoLogic.
- Ph.D., Materials Science & Engineering (UCSD)
- B.S. Cornell University
- Budget management
- Contract negotiation
/ 05 Arturo Oujo
Design Lead
Design leadership across multifamily, mixed-use, and single-family work.
/ 06 Sancho
Sr. Field Superintendent
Field leadership coordinating trades, safety, and quality on every site.
/ 07 Miguel Aldrete
Sales Manager
First point of contact for new development partners and clients.
/ 08 Rosie Perez
Designer
Space planning and design development across the Ark Haven portfolio.
/ 09 Paulina Huerta
Designer
Design systems and material specification for Ark Haven projects.
/ 10 Gabriela Sepulveda
Designer
Interior and fit-finish design for Ark Haven residential and multifamily.
Let's talk about your project.
Custom home, remodel, ADU, or something you have not fully defined yet — the first conversation is free and you will leave it knowing more than when you started.