How your design hands over to your builder

Once you've shared your designs with your builder, they're visible to both of you on the customer and builder dashboards. The builder reviews, asks any questions they need to, and starts turning design intent into a buildable plan.

This article describes what happens at that handover.

What gets shared

Your builder sees the full design output: layout drawings, finishes, materials list, mood board, and any visualisations or notes. They also see the agreed scope of work that your quote was built against. If you're using a structural engineer or an architect, their drawings are shared at the same time.

What the builder does with it

Your builder turns design intent into a buildable plan. That means:

Verifying measurements on site. Even with a complete design pack, the builder confirms key dimensions before ordering or starting work. The structural reality of a building is always slightly different from the drawings.
Confirming feasibility. Some design ideas hit constraints once they're on site — joist depth, pipe runs, structural elements. The builder spots these and proposes solutions.
Sequencing the work. The builder plans the order things happen in: first fix, second fix, the cadence of trades, when materials need to be on site.
Flagging anything that needs a decision before kick-off. If the builder spots something that requires a choice — a material substitution, a layout change, a structural question — they'll flag it before work starts so it doesn't surface mid-build.

Who's the principal designer

The builder formally becomes the Principal Designer under the Construction (Design and Management) Regulations 2015 (CDM) when the Home Improvement Contract (HIC) is signed — not at the moment of design handover, and not at break ground. That role carries the legal responsibility for design coordination, design risk management, and design compliance through the build.

Beams isn't the principal designer on a project. What our designers produce is design intent — a clear brief that helps the builder price and plan. The builder takes that intent, verifies it against the site, fills in the buildability detail, and is responsible for the design as actually built.

The practical implication for you: design intent is a starting point, not a buildable specification. Expect the builder to make small adjustments where the design meets the site, and to flag anything material so you can decide together.

Where you fit in

You're available for questions during this phase but you don't usually need to be hands-on. Your builder talks to your designer where there's a design question, and to you where there's a customer choice to be made. Your build advisor is the person you can ask if anything is unclear.

What this means for you

The handover usually happens cleanly because the design intent and the builder's quote are aligned. Where it doesn't, the questions get surfaced early and sorted with you, your designer, and your builder together. The aim is that nothing material drops between design and build.

What's in your design pack
How quotes change after design is locked
Your build advisor — what they do