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Supply Service.

Steel Building Supply Service

The right steel building kit, sourced from the right manufacturer — anywhere in the U.S.

20+ Manufacturer Network

Reputable PEMB brands, manufactured in the USA

NatMar has built direct relationships with 20+ of the most reputable pre-engineered metal building manufacturers in the country. We work across every major frame system — red iron, cold formed, steel stud panelized, tubular — and across multiple manufacturers within each. That breadth is the whole point: we're not locked into pushing one supplier's catalog. The right manufacturer for your project is the one that ships the right product on time at a competitive price, and our network is wide enough to find it.

Expertise You Can Lean On

15+ years matching projects to the right kit

Steel building manufacturers are not all the same. Some excel at large clear-span commercial, some at interior layouts, some at agriculture, some at small tubular kits for small covers. Picking right takes experience that buyers can't develop on a single project. NatMar brings 200+ completed builds and decades of cumulative manufacturer experience to that decision. So the building system that ships to you, is engineered for your site, your code, and is truly the best option for you.

Who This Fits

Homeowners, developers, contractors — anyone ordering a steel building

Supply Service is for any buyer who wants the best steel building package landed on their job site without learning the manufacturer landscape themselves. We supply homeowners building a barndominium or workshop, commercial developers ordering warehouses or flex space, contractors who need a reliable PEMB partner across multiple projects, and ag operators putting up barns, hay shelters, or equipment cover. The buyer profile changes; the work of getting the right kit at the right price stays the same — and that's what NatMar specializes in.

Building examples

Design your own building in 3D

Each card is a real NatMar build template — hit "Design this building" to open it in our 3D designer right on the page and start customizing.

Workshop

14x36x15 American Barn Shop

Tall American barn-style shop — long footprint for multi-bay layouts, high ceiling for lifts, vertical storage, or hobby work that needs serious clearance.

Commercial

40x100x16 Large Auto Shop with Lean-To Office

Drive-through auto shop layout with an attached office lean-to — service bays plus front-of-house under one roof.

Carport / Garage

25x40x12 Single Overhead

Single-bay garage with full-height overhead door — sized for a full-size truck, RV, or compact workshop.

Agriculture

30x40x14 Open Single Slope

Open-sided ag layout with a single-slope roof — sized for hay storage, equipment cover, or animal shelter with quick drainage and clean snow shed.

Portfolio

Recent Builds

View the Full Portfolio →

Testimonials

What Our Clients Say

★★★★★

“Nate and his experienced crew did a fantastic job erecting our 35' x 40' steel shop. I found NatMar through an internet search. I selected NatMar because they were local, displayed excellent expertise, and were competitively priced. Their communications and administration were flawless. The crew was always punctual, polite, and worked with care and attention to detail. We had some challenges along the way; however, everything was dealt with without any fuss or penny-pinching.”

★★★★★

“Nathan and his crew are top notch! They were able to fit in my small project between their bigger jobs which got me finished real quick. They do great quality work and I would highly recommend NatMar to anyone.”

★★★★★

“Complete project was good quality, on time, on budget and craftsmen were very professional. If I could find anything not perfect would be the screws scattered around post completion which is petty. Great job guys!”

★★★★★

“Nathan Margosian of NatMar Construction and his crew have been nothing but excellent. They have just completed a third building for me in the last year. Nathans customer service, punctuality at completion on time, and completing on budget is unmatched, all at a very fair and reasonable rate. I highly recommend Nathan and NatMar Construction for any of your needs for metal buildings.”

★★★★★

“NatMar Construction is the best in Western Colorado! Amazing customer service from first call through final build! Excellent company, highly recommend!”

★★★★★

“Nathan and Braden are working on a project of ours. Very impressive work! Nice to see such care taken on a construction project.”

★★★★★

“Excellent work and attentive to detail. Crew was cordial and easy to work with. Building is magnificent! Looking to build an "A" frame metal barndaminium. Fun!!”