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M&M American Builders of NH

Metal Buildings in New Hampshire

Steel Building Systems
Building Erection
Turnkey Finish

About Us

Our mission here at M&M American Builders of New Hampshire is to provide the highest quality steel buildings, customer service, accountability, and professionalism. We are a growing company contract company that has expertise in projects ranging from, but not limited to, commercial, institutional, retail, and residential. Every project will be provided the same level of quality and attention ensuring scheduling and all other expectations are met as we believe, good is not good enough. Intangible factors, such as scope clarity, knowledge base, experience & technical kill, all play a part in delivering intended results.

We have done an array of building types including, homes, barns, offices, warehouses, schools, riding arenas, churches, auto shops, and that is just to name a few. New construction, renovations, millwork installation, and custom builds are a few of the more popular services we offer and provide throughout New Hampshire and other surrounding locations.

Servicing, Manchester, Lincoln, Dover, Conway, Portland Maine, and other major cities in the nearby vicinity, we are successful in completing scheduled projects with excellence. Intangible factors, such as scope clarity, knowledge base, experience & technical kill, all play a part in delivering the intended results and we here at M&M American Builders of NH, are your partners for success. Discover the exciting world of custom metal buildings and more by reaching out to us today.

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New Hampshire Metal Building System

Capital Steel Quality

In addition to our industry leading 50 year structural and 40 year paint warranties, your Capital Steel brand building comes equipped with a comprehensive list of standard features.

Capital Steel Building Trim and Wall Package


  • All drawings and anchor bolt plans engineer certified
  • A-325 structural bolts
  • 50,000 PSI high strength plate
  • Deluxe architectural trim package
  • Submerged arc welded frame
  • Galvanized purlin bridging angle
  • Factory primed frames
  • 80,000 PSI Galvalume roof sheeting
Capital Steel Building Roof Aerial View


  • Attractive design with choice of panel and trim colors
  • Custom eave heights available
  • Open clear span frame up to 300′
  • Easy to expand in the future
  • Low lifetime maintenance
  • Non-combustible = Lower Insurance
  • Fast delivery fast erection
  • 15 standard colors
Capital Steel Building with Optional Components


  • Sectional or Roll Up doors for vehicle access, man doors for patrons
  • Insulation (R6 to R30 vinyl backed)
  • GenStone siding upgrade
  • Gutters and down spouts
  • Translucent wall panels and skylights
  • Extended overhangs
  • Liner panels
  • Glass storefront doors

Steel Buildings Designed for New Hampshire

Engineering, Aesthetics and Delivery

Capital Steel buildings are engineered with your local codes and loads in mind. More specifically, a metal building system designed for New Hampshire will be uniquely evaluated and designed to endure wind speeds, snow loads and seismic activity.

Made to Order

Customize Your Building System

You can personalize the aesthetics and improve the functionality of your building by adding components like windows for ventilation, wall liner panels to increase durability and patron as well as vehicle access doors.

Common Building Applications

Designed According to Intended Use

Capital Steel buildings are designed made to order according to your intended use. Starting with the building system which includes the primary and secondary framing as well as the wall and roof sheeting, you will then choose from our menu of customization options to create your personalized building kit.

Frequently Asked Questions

Guiding You Through the Completion of Construction

Your local Capital Steel contractor is thoroughly trained by our staff and capable of helping you navigate your project from inception to planning, procurement and finally construction.

What's included in a metal building kit?
Our base building package comes delivered to your site with the primary and secondary framing, roof sheeting, wall panels, fasteners, bracing, sealants, trim and flashing.
How can I customize my building?
We have a menu featuring hundreds of accessories such as walk doors, sectional and roll up doors, gutters and downspouts, windows and even skylights to improve the functionality of your building.
How can I personalize my building?
You can choose to add any combination of colors to the roof, walls and trim. The select will be baked onto the building components prior to delivery. You may also add the look of stucco or stone to your building with optional panels.
How are building prices determined?
The price of your standard building package will be based on the current price of steel, the intended use and the codes and loads required by your locale.
How does my location affect my building price?
If you plan to build in Florida, your building will be designed to withstand higher wind loads than a building delivered to Utah where it may be engineered to endure snow loads. Each condition will require a unique amount of steel.
How does the intended use influence the cost?
A building intended to be used as a garage will most likely require sectional doors, possibly a man door and maybe windows. On the other hand, if you are planning to build an aircraft hangar, a bi-fold door would be necessary. Each component has its own added cost.
What if I need a contractor?
Capital Steel is a one stop shop for all of your building needs! Our builder network is made up of hundreds of contractors who along with the price of your building can estimate how much your concrete, building erection and even turnkey services will cost.

Our Areas of Service in New Hampshire

Servicing Manchester, New Hampshire, and the following cities, Lincoln, Concord, Laconia, Portsmouth, Conway, etc. M&M American Builders of NH has all your steel building needs and solutions as we have extensive experience with homes, garages, offices, gyms, warehouses, and a variety of other building types. If you are in the market for a steel building, custom build, renovations, or any of the other services we offer, and were waiting for the perfect time to seize this opportunity, the time is now. Reach out to us today by filling out the quote request form or give us a call at (603) 854-3005.