Concrete Garage Sizes

Nucrete concrete garages come in standard widths from 6'5″ up to 20'5″ and standard lengths from 14'3″ to 24'3″, with apex roof buildings available in further 2′ length increments beyond that. Buildings are made up of 600mm (2′) wide panels, so intermediate sizes are available if a standard size doesn't quite fit your plot.

The tables below show the standard external sizes. Garages are usually referred to by the round number — the nominal size — while the actual building comes out a few inches bigger, because of how the panels and corner posts assemble.

The nominal size is the name; the actual size is what stands on your base. A "10ft × 16ft" garage is really about 10'5″ wide and 16'3″ long externally. Inside, you lose a little to the walls — the panels are around 75mm (3″) thick at their base — so the internal space is a few inches less than the external figure in each direction.

If you're working to a tight boundary or squeezing between existing structures, don't work from the nominal number. Ask us for the exact external footprint of the building you're considering, and remember the roof overhangs the walls too: allow approximately 6″ (150mm) to each side for apex garages, and a little less for pent roof garages (which the old brochures called sloping roof).

Measure the space you have, then think about what actually goes inside. A car needs its doors opening; bikes, mowers and ladders always take more room than you expect. If the plot allows it, the next length up is usually money well spent — with apex buildings you can extend in 2′ steps.

For a double garage, look at the 16'5″ to 20'5″ widths. Pent doubles top out at 20'3″ long, so for a longer double an apex roof is the way to go. Pent singles stretch further — up to 24'3″ — and apex singles carry on in 2′ steps beyond that for a really long workshop, caravan bay or two cars nose to tail.

One important thing before you commit: talk to us before laying a concrete base. Because the buildings are panel-built, an intermediate or custom size is often a better answer than forcing a stock size onto an awkward plot — and it's much easier to adjust the building than the base.

Every Nucrete garage price includes VAT, delivery and installation by our own teams. As standard you also get pre-treated timber fascias, a Hormann vertical-rib Up & Over door, cement fibre roof sheets and our 10-year guarantee on the structure. A 4′ wide timber window is optional.