Do I need planning permission for a garden office?
Usually not, and it depends on height, how close it sits to a boundary, how much of the garden it covers, and whether the house is listed or in a conservation area. Working in it can change the answer, particularly if customers are going to come to it or a van's going to be parked up for it. We check before we quote and tell you on the visit rather than three weeks later.
Can I put it through the business?
Ask your accountant. We build them, we don't advise on tax, and the answer moves depending on how you're set up and who owns the house. Anyone in this trade who gives you a confident answer to that question over the phone is telling you something about themselves.
Is it actually warm enough to work in through winter?
A properly built and insulated one is, with a small heater and about twenty minutes' notice. A summerhouse with a bit of foil in the walls isn't, whatever the brochure says. This is the single biggest difference between the buildings on this site, and it's worth asking what's in the walls before you compare two prices.
Will the broadband reach?
Not reliably over Wi-Fi, no. Run a data cable in its own duct while the trench for the power is open and it stops being a question. It's the cheapest thing on the whole job and the one people most regret skipping.
My garden's tiny. Is this even worth it?
Sometimes it isn't, and we'll say so on the visit. If the only spot for it kills the last usable bit of lawn, or the access is so tight that getting a base in costs more than the building, a loft conversion is the better answer and you should go and get one quoted. We'd rather tell you that standing in your garden than after you've paid a deposit.