From Tape Measure to Model: How We Survey a Room Before We Build It in 3D

A render can only be as accurate as the room it is built from. If the model is a few centimetres out, furniture will not fit, a window will sit in the wrong place, and the client will notice. So before we open Blender, we measure.

For a site visit we bring the basics: a laser measure, a tape, a notebook and a camera. The laser gives us quick overall dimensions. The tape handles awkward details such as window reveals, skirting heights and the depth of a chimney breast.

We measure in the same order every time. Overall width and length first, then the diagonals, because a room that is not truly square shows up in the diagonal difference. Then ceiling height, which often changes between walls in older properties, as many Buckinghamshire homes near our Marlow studio do.

Next we record the fixed features: windows, doors, radiators, sockets, beams and any step in the floor. We photograph each wall straight on, with something of known size in the frame, which lets us check proportions later when we are working at our desks.

Back in the studio, we build the shell of the room from the numbers before adding anything else. We then overlay the photographs to check that the windows, doors and features line up. If something looks wrong, we would rather return with the tape than guess.

We keep a short sheet of dimensions with the project files. When a client changes the layout three weeks later, we know exactly which wall was measured and which was estimated, and that makes revisions quicker and safer.

Good surveys are not glamorous, but they are the reason our renders hold up when the real furniture arrives. For a project like a private cellar or a small office, getting the shell right first lets us spend the rest of the time on lighting and materials, where the image is actually won. See our interiors page for finished examples.