Last week I looked at the remains of AP Leamington. Beside them are these modern industrial units built in the last 12 months.
The simple design would appear to be easy to model. There's pretty much no fiddly detail to replicate, in fact the hardest job would be keeping your work clean and tidy as there's no chance of hiding any mistakes.
Of course, if scratchbuilding it too daunting, the new Wills industrial units look very similar indeed.