Office Building Costs: $200–$575 per Sq Ft to Build

Steel-framed multi-story office building exterior under a clear sky

Building an office in the United States typically runs $200 to $575 per square foot for a finished, move-in-ready building. Those figures can mean anything from a few hundred thousand dollars for a compact single-story office to tens of millions for a mid-rise. The spread is that wide because the headline number bundles two very … Read more

How Long Does It Take to Build an Office Building?

Steel office building frame being erected by a crane on an open site

Most ground-up office buildings take about 8 to 18 months to construct, and once you count design and permitting, the full timeline from first sketch to move-in usually runs 12 to 24 months. A steel or prefabricated structure can shrink the structural phase to a matter of weeks, but front-end approvals and the interior fit-out … Read more

Office Building Lifespan: Structural vs. Functional Life

Steel-framed office building with a maintained envelope built for long structural life

A well-built office building’s structural shell — its frame and foundation — can last 50 to 100 years or more with proper upkeep, yet the building’s useful life often ends decades sooner. That gap is the most important thing to understand about office building lifespan: the structure rarely fails outright, but its layout, systems, and … Read more

Steel Portal Frames for Wide Column-Free Buildings

Steel portal frames forming the column-free interior of a single-storey industrial building

A steel portal frame is a rigid frame of columns and sloping rafters joined by moment-resisting connections, and that rigidity lets a single frame span a wide, column-free interior. Most single-span frames cover roughly 15 to 50 metres of clear width, and the 25–35 metre band is the most economical to build. Because no internal … Read more

Aircraft Hangar Design From the Aircraft Out

Clear-span steel aircraft hangar interior with a business jet under a column-free roof

A hangar is sized by the aircraft it protects, not by the floor area you happen to own. Sound aircraft hangar design starts with the tail height, wingspan, and length of your current and future fleet. From there it works outward to the door opening, the clear span, the structural frame, and the fire and … Read more

Types of Aircraft Hangars

Clear-span steel aircraft hangar with its full-width door open and a jet inside

Aircraft hangars fall into a short list of recognizable types, and they are easiest to tell apart along three lines: how the building is framed (clear-span versus conventional), what it is used for (storage, maintenance, corporate, or military), and the size of aircraft it has to hold. Most owners meet the same core set first … Read more

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