Protecting Design Intent: Why the Drawings Should Be the Promise

A house is designed on paper and then built by other people. Somewhere between the two, the design can quietly change.

Most architects know the moment. You visit site and the shadow gap has become a cover strip. The flush threshold has gained a step. The rooflight is a different make because "it was the same thing, only cheaper". None of it was agreed, and each change on its own seems small. Together they turn a considered house into an ordinary one.

We think the drawings should be treated as a promise to the client, not a starting point for negotiation. This article sets out where design intent usually gets lost and what we do at Saint Developments to stop it.

Where design intent gets lost

In our experience it rarely happens through one big decision. It happens in four familiar places.

  • At tender. A low price is often a price for something slightly different. Specified products are swapped for "equivalents", or details are allowed for in a way that cannot achieve what is drawn. The gap only appears once work starts.

  • On site, under pressure. When a detail is hard to build, the easiest fix is to change it. If no one asks the architect, the change becomes permanent before anyone notices.

  • Through "value engineering" offered to the client. A builder suggests savings directly to the homeowner. The client agrees in good faith without seeing what is given up, and the architect hears about it afterwards.

  • In the finishing trades. Junctions, alignments, setting out and reveals are where a design reads as intended or not. They are also where rushed trades cut corners.

How we protect it

Our approach is simple: we build what is drawn, and when we can't, we ask before we change anything.

  1. We price the drawings as they are. Our tender reflects the specification and details issued. If we think something will be difficult or costly, we say so in the tender rather than quietly allowing for something else. Our price is fixed, with phased invoicing, so the client is not tempted into compromises later to recover the budget.

  2. We raise queries early. Before work starts we review the details that matter most to the design and list our questions for the architect. Problems are cheaper to solve on paper than on site.

  3. No substitutions without agreement. Any change to a specified product or detail goes to the architect first, with the reason and the cost or time impact. Nothing is swapped because it was easier to get.

  4. We route savings through the architect. If a client asks us how to save money, we involve the architect so they can judge what matters to the design.

  5. We pay attention to the junctions. We plan setting out, alignments and finishes before trades arrive, and we check them while the work is still open.

  6. We keep you informed. Regular photo updates and a clear record of decisions mean you can see the design being built without having to be on site every week.

Why it matters to everyone

The homeowner gets the house they paid an architect to design. The architect gets a finished project they are proud to photograph and put their name to. And we get the kind of work we want to be known for.

We work only on residential extensions and renovations, and much of our work comes through architects. If you are looking for a contractor who will respect your drawings and keep you involved, we would be glad to be included on your next tender list.

For Architects.

Craig Whinney

Owner of Saint Developments Ltd, building premium residential extensions and renovations across Suffolk, with a Master’s in Civil Engineering and Construction Management.

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Living Through an Extension: What to Expect and How We Make It Easier