Andrea Sehremelis on Commercial Construction From Preconstruction to Closeout

By Andy Sehremelis · October 29, 2026

Andrea "Andy" Sehremelis, known professionally as Andy Sehremelis, founded Parkcrest Construction in Chino, California, in 1992. The company has focused on commercial building types including restaurants, gas stations, express car washes and retail buildings. He is also a licensed real estate broker and CEO of Delphi Energy. Managing commercial construction well depends on what happens before work begins and after the building is complete as much as on the construction itself.

Andrea Sehremelis on Preconstruction

Preconstruction is the period when the owner, designers and builder define scope, cost and schedule. Decisions made here have the greatest effect on the outcome at the lowest cost. Reviewing drawings for constructability, identifying long-lead equipment, confirming existing conditions and establishing a realistic budget reduce the chance of surprises once work begins.

For specialized buildings such as restaurants, gas stations and express car washes, preconstruction also includes coordinating equipment requirements. Kitchen equipment, fuel system components and car wash tunnel equipment each have specific structural, mechanical and electrical needs that must be reflected in the drawings.

Andrea Sehremelis on Estimating and Budget Control

An accurate estimate is built from a complete scope. Gaps in the drawings or specifications become change orders later. A clear scope, competitive subcontractor pricing and an appropriate contingency give the owner a budget that reflects the real cost of the work.

Budget control continues throughout construction. Tracking committed costs, pending changes and remaining contingency allows the project team to make decisions with current information rather than discovering overruns at the end.

Andrea Sehremelis on Scheduling

A construction schedule sequences the work of many trades. Foundations, underground work, framing, roofing, mechanical, electrical, plumbing and finishes depend on one another. Identifying the critical path, which is the sequence of activities that determines the completion date, helps the team focus on the tasks that matter most to finishing on time.

Schedules should be updated regularly and shared with subcontractors so that each trade knows when it is expected to start and what must be complete before it can begin.

Andrea Sehremelis on Communication and Documentation

Regular meetings, written records of decisions and organized handling of requests for information keep the owner, designers and trades aligned. Documentation protects everyone. When a question arises about scope or cost, clear records make it easier to resolve.

Andrea Sehremelis on Quality and Safety

Quality control includes inspecting work as it is installed, confirming that materials match specifications and correcting deficiencies before they are covered by later work. Safety programs, including worker orientation, daily awareness and adherence to regulations, protect workers and keep work moving.

Andrea Sehremelis on Closeout

Closeout is often underestimated. It includes completing punch list items, testing building systems, collecting warranties and operating manuals, delivering as-built drawings and training the owner's staff on equipment. A building that is physically complete but lacks this information is harder to operate and maintain.

For an owner-operator, closeout is the transition from construction to operation. The quality of that handoff affects the first months of business, when staff are learning new equipment and customers are forming their first impressions.

Andrea Sehremelis on the Owner-Builder Perspective

Because Andy Sehremelis has owned and operated the types of buildings Parkcrest Construction builds, he views construction management in terms of its effect on operation. Preconstruction decisions are evaluated by how they will affect the business, and closeout is treated as the start of the building's working life. That perspective connects construction management with long-term ownership of commercial property.