Trusted Metal Building Experts Since 1987

When your project depends on accuracy and a crew that knows how to build it right, you need a metal building contractor with hands-on experience. DeGraff Development self-performs pre-engineered metal building (PEMB) erection, insulated metal panels, and structural steel work for commercial, industrial, and agricultural projects across the Central Valley.

For more than 25 years, we’ve been erecting steel buildings of all sizes—from warehouses and shops to large-scale manufacturing and cold-storage facilities.

Complete Metal Building Services

  • PEMB Erection (Butler, NUCOR, CECO, Metalic, Star, Varco Pruden, etc.)

  • Metal Building Installation

  • Insulated Metal Panels (IMP)

  • Cold-Storage Walls, Ceilings & Doors

  • Retrofits, Renovations & Expansions

  • Roof Panels, Wall Panels & Trim

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Why Choose DeGraff Development?

Experienced & Certified Crews
Our erectors are trained and certified in PEMB and structural steel systems, ensuring your building is installed exactly to manufacturer specs.

Faster Schedules
Because we self-perform the work, we control manpower, sequencing, and quality—leading to faster builds and fewer delays.

Precision Installation
From anchor bolt layout to final trim, every detail is checked for alignment, plumb, and long-term durability.

Local Central Valley Knowledge
We understand local building codes, soils, weather, and permitting, including Title 24 and CALGreen compliance.

Built to Last
Our steel buildings stand up to heavy use, high heat, and long-term operational demands.

Prefered Contractor
Preferred Metal Building Contractor for Ceco Metal Building systems and CBC Metal buildings.

Industries We Serve

  • Commercial & Industrial

  • Manufacturing Facilities

  • Cold Storage & Food Processing

  • Agriculture & Farm Buildings

  • Automotive Shops

  • Distribution & Logistics

  • Churches & Community Facilities

  • Aviation & Storage Buildings

Your Metal Building Done Right the First Time

We coordinate with architects, engineers, and building manufacturers to ensure a smooth process from design through erection.

Whether you need full general contracting or steel erection-only services, we build safely, efficiently, and to spec.


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Serving the Central Valley and Beyond

DeGraff Development provides metal building construction and erection services in:

Modesto, Turlock, Manteca, Ripon, Oakdale, Tracy, Stockton, Lodi, Merced, Patterson, and surrounding Central California communities.

We understand that schedules and safety are top priorities for owners and general contractors, that is why our crews are of the most trained and safety conscious for installing pre-engineered metal buildings and Insulated Metal panels.  Our crews take great pride and care in their craft, which will show in your project. 

  • Quality

  • Timely Schedules

  • Safety

  • Professionalism

  • Cutting edge technology

  • Preferred contractor for Kingspan Insulated Metal Panels.

  • Preferred Contractor for CBC Steel Buildings