The 3D Perspectives in Your Reno Quote Are Not All Telling You the Same Thing

By the time most of us are comparing quotations, we have four or five sets of perspectives sitting in a folder. Same flat, five versions of the living room, five different moods, and a quiet suspicion that we are choosing a contractor based on who has the better graphics department.

That suspicion is partly right, and being able to tell the difference is worth more than another round of comparing per-carpentry-foot pricing.

The three kinds you will receive

Built from your plan. Somebody took your unit's floor plan, modelled the actual walls, and put the proposed carpentry into that space. Windows are where your windows are. The bomb shelter is where your bomb shelter is. The column near the kitchen entrance is in the picture because it is in your flat.

Adapted from a similar layout. The firm has done a hundred units of your type. They pulled the closest previous model, swapped the finishes and adjusted the carpentry. Broadly honest, and usually close enough, but the details that make your unit yours are approximate.

Borrowed outright. A perspective from a different project, or a stock image, presented to establish a style. Nothing wrong with this as a mood reference. Quite a lot wrong with it if you think you are looking at your home.

Nobody labels which one you have got. You have to work it out.

How to tell

Look for your own oddities. Every unit has them. The service yard door, the ledge above the kitchen entrance, the awkward recess where the aircon ledge intrudes, the exact position of the DB box. If the perspective shows a clean rectangular room and your flat has a notch in the corner, you are not looking at your flat.

Check the window against reality. Not the view, which is almost always faked, but the proportion and position of the frame. Full-height windows that your unit does not have are the clearest tell there is.

Count the sockets and switches. Firms that model properly put them in, because a client who cannot see where the switches go will ask later. Perspectives with completely blank walls tend to be earlier-stage or borrowed.

And ask a direct question: was this built from my floor plan? Most firms will answer honestly, and the ones that hesitate have told you something.

Why it matters more than it sounds

Two reasons, and neither is about the picture being pretty.

The first is that a perspective built from your plan is a design that has been tested against your actual dimensions. Carpentry that does not fit shows up on screen instead of on installation day. In a small flat, where a 40 millimetre error means a wardrobe door that cannot open fully, that is not a trivial difference.

The second is that it tells you how the firm works. A studio that models properly is a studio that has thought about the job before quoting for it. Firms offering 3d interior rendering as a proper design step rather than a sales garnish tend to be the ones whose quotations hold, because the quantities came from the same model as the pictures.

What to ask for before you commit

A perspective of the awkward corner, not the hero shot. Every flat has one spot that is genuinely difficult, and every set of renders quietly avoids it. Ask to see it.

A view from the entrance. It is the first thing you will see every day for the next decade and it is almost never the angle they choose.

The same room in daytime and at night. Most perspectives are rendered in an even, warm, flattering light that no HDB flat has ever had. A north-facing living room in the afternoon is a different room from the one in the picture.

And the finishes named, not just shown. A render can display a laminate that resembles four different products at four different prices. The specification, in writing, next to the image, is what protects you later.

The revision round is the real test

Perspectives are useful when you change something, which is the part most people underuse.

You will look at the first set, and something will be wrong. The feature wall is too heavy, the dining area feels tight, the carpentry runs past the window in a way that looked fine in plan. Say so, and see what comes back and how quickly.

A firm working from a proper model of your unit can turn a revision around in a day or two, because they are adjusting a model rather than redrawing a picture. A firm that borrowed the image has to start again, and the revision either takes a fortnight or arrives with the same problem quietly cropped out of frame.

Two rounds of this will tell you more about how the project is going to run than any amount of reading reviews. The renovation itself is a long sequence of small changes, and how a firm handles the first one is a fair preview of how it handles the rest.

A reasonable expectation

You are not going to get architectural-grade documentation with a renovation quotation, and you should not expect it. What you can reasonably expect is that the pictures describe your home rather than a home, that the awkward parts are shown rather than cropped out, and that what appears in the image also appears in the quotation.

The firms that do this well are not necessarily the ones with the glossiest perspectives. In my experience they are the ones whose renders look slightly plainer, because there is a real ceiling height and a real window in them, and somebody has resisted the urge to add a floor lamp that was never in the budget.