CORE Builder Group
§ About CORE

A contractor by credential.
A craftsman by choice.

CORE Builder Group was founded in 2013 as a structural restoration specialist for South Florida's toughest buildings — the ones where the tenants can't move out, the engineers don't forgive shortcuts, and the stakes are measured in human safety.

Ryan Perez, Managing Partner of CORE Builder Group, on-site at a Miami construction project — CORE crew in branded vests on the scaffold and the downtown Miami skyline behind.
Ryan Perez · Managing Partner
§ Founder

Ryan Perez

Founder · Principal

Credential
State of Florida Certified General Contractor
Founded
June 2013, Miami, FL
Service footprint
Miami-Dade · Broward · Palm Beach · Monroe

“We built CORE Builder Group around the one thing the structural trades almost always get wrong: accountability. The engineer stamps the plan, the contractor has to stand behind the execution. When we take a project, we do not hand off the critical path. Our crews are on-site. Our project managers answer. And when we're done, the building is better than it was at Certificate of Occupancy.”

— Ryan Perez, Founder

§ Principles

Four principles. Applied every single day.

  1. I

    In-house, not subcontracted.

    We self-perform the critical path — demolition, concrete repair, rebar, post-tensioning, waterproofing. When the work is on us, the schedule is on us, and the quality is on us.

  2. II

    Engineered before executed.

    Every restoration scope is performed under the stamped direction of the engineer of record. We do not field-engineer structural decisions. The discipline shows up in the outcomes.

  3. III

    Clients, not jobs.

    Condominium boards, hotel operators, institutional owners — they rehire us because we communicate weekly, bring no surprises, and do not disappear at closeout. The buildings we restore are places people live and work.

  4. IV

    Fixed plans, fixed prices.

    Once the scope is finalized with the engineer of record, our schedule and pricing are committed. Field conditions are handled with pre-agreed unit prices so there are no surprises.

§ The team

The crew accountable for the work.

Eight principals and operations leads with a combined 100+ years of structural craft. Project managers and superintendents stay with a project from kickoff through county sign-off — no critical-path subcontracting, no last-mile handoffs.

  • Ryan Perez

    Managing Partner

  • Rodolfo “Rudy” Diaz

    Managing Partner

  • Jairo Flores

    General Superintendent

  • Brent Diaz

    Project Manager

  • Henry “EJ” Ventura

    Safety Director

  • Kevin Ortiz

    Chief Financial Officer

  • Luis Sandoval

    Assistant General Superintendent

  • Andy Gonzalez

    Procurement Manager

§ Who we work with

Boards. Owners. Engineers. Operators.

  • 01Condominium boards navigating 40-year recertification and structural reserve funding.
  • 02Hospitality operators who need restoration without shutting down keys.
  • 03Institutional owners — hospitals, universities, aviation authorities — with zero-tolerance operational continuity.
  • 04Structural engineers of record who need a contractor that executes their drawings — not second-guesses them.
  • 05Developers on commercial projects where structural quality is the differentiator.
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