818 383-5252

Office

Sunland,

California

Commercial

SI United Construction’s focus in commercial construction and tenant improvement projects across office, retail, medical, and industrial spaces. From full interior build-outs to system upgrades and structural modifications, we help business owners, property managers, and developers bring their spaces up to code, up to date, and ready for long-term success. Our expertise ensures projects are completed with minimal disruption to business operations, and with a clear focus on budget, function, and lasting value.

Our flat fee commercial services often include the following:

Interior Build-Outs & Space Planning:

  • Reconfigure floor plans for new tenants, medical use, or growing teams.
  • Install new walls, ceilings, doors, and finishes to match branding and function.
  • Upgrade restrooms, break rooms, and ADA-accessible features.

Structural Modifications & Additions:

  • Expand usable square footage through additions, mezzanines, or partition changes.
  • Reinforce or remove load-bearing walls to open up layouts.
  • Upgrade or relocate entry points, storefronts, and windows for improved flow or visibility.

Mechanical, Electrical, & Plumbing (MEP) Upgrades:

  • Modernize HVAC systems for efficiency, zoning, and tenant comfort.
  • Perform electrical panel upgrades to support modern equipment or lighting systems.
  • Reroute plumbing and drainage to accommodate new layouts or code upgrades.

Energy Efficiency & Title 24 Compliance:

  • Install commercial-grade solar systems and energy-efficient lighting.
  • Add EV charging stations for fleet or employee use, including pedestal or wall-mount options.
  • Integrate battery storage for blackout protection or demand management.
  • Ensure all improvements meet Title 24 and local energy codes.

Permitting & Project Management:

    • Handle all city permits, inspections, and approvals.
    • Provide accurate timelines, transparent budgeting, and clear communication from start to finish.
    • Coordinate subcontractors, deliveries, and safety on active job sites.

Why Choose Us

Schedule a FREE estimate today so we can discuss how our flat-fee options can save you time and money.