Maine Metal Buildings Inc.

Metal Building Additions

Expand Your Space — Without Starting From Scratch

When your building needs more room — storage, workspace, equipment, offices, or production — a well-planned metal building addition can be the smartest way to grow.

At Maine Metal Buildings, we design and install structural additions that integrate cleanly with your existing building so everything looks, functions, and performs like one complete structure.

No guesswork.
No patchwork.
Just expansion done the right way.

Why Metal Building Additions Work So Well

A metal building addition can help you:

  • Avoid the cost of building new

  • Maximize your property footprint

  • Improve functionality and organization

  • Increase operational efficiency

  • Protect equipment and materials

  • Prepare for future growth

And because steel systems are flexible, additions can often be designed to integrate seamlessly — instead of looking “tacked on.”

Our Process

How We Approach Additions

Metal building additions require careful planning — more than new construction — because we’re tying into an existing structure.

Our priorities:

  • Accurate measurements

  • Review of original building plans (when available)

  • Load and connection considerations

  • Weatherproofing and roof tie-ins

  • Clean transitions between new and old

We coordinate closely with general contractors and project managers to make sure every detail is handled properly.

Additions Done Right = Long-Term Performance

Poorly designed additions can cause:

  • Water leaks

  • Structural stress

  • Alignment issues

  • Fastener and panel failure

  • Roof transition failures

We take the time to ensure your addition integrates correctly, performs well, and looks like it was always meant to be there.

Thinking About Expanding Your Building?

If you have a project coming up and want experienced installers involved, we’d be glad to talk through the details.

Whether you’re adding storage, workspace, or full building extensions — we’re here to help plan it the right way.

Tell us about your project and we’ll walk you through the best approach.

FAQs

1. Can you add on to an existing metal building?

Yes — we specialize in metal building additions that tie into existing structures. We review the original design (when available) and engineer the connection so the new and existing sections work together structurally.

Not always. While matching manufacturers can simplify engineering and aesthetics, we can often design additions to integrate with many existing systems — as long as proper measurements and engineering are completed.

That’s our goal. We align rooflines, panel styles, colors, and transitions as closely as possible so the addition blends seamlessly instead of looking “tacked on.”

We focus on supply and installation only. We don’t handle permitting, concrete, or excavation — but we’re happy to recommend reputable partners if needed. In addition, we help our clients with foundation design. 

It helps to have: building dimensions, photos, site location, and any original drawings if available. From there, we’ll review options and walk you through next steps.