Coordinating with the lead builder

The lead builder runs the site. You bring bespoke items into a live programme. Coordinating well is the difference between a clean install and a chaotic one.

Steps

1. Make first contact with the lead builder early. When you're appointed, get on a call with the lead builder. Not the customer — the builder. Establish working relationship, discuss programme, share key dates.
2. Share your shop-drawing schedule. When will drawings be ready for customer review? When do you expect Design Freeze? When will fabrication complete? The lead builder's programme depends on these dates.
3. Confirm site readiness milestones with the lead builder. What stage does the build need to be at for:

• Survey
• Delivery
• Install

1. Agree delivery logistics. Access, parking, lift availability, off-loading help. Confirm with the lead builder before scheduling the delivery, not after.
2. Confirm install responsibility in writing. Are you installing, or is the lead builder? If split, what's the line? This is best clarified at quote stage and reconfirmed before delivery.
3. Stay in regular contact during fabrication. A short weekly check-in is enough — programme changes either side affect both sides. Don't go quiet for weeks.
4. Hand items over with documentation. When items arrive on site, the lead builder needs the paperwork — care instructions, hardware specs, warranty information, a delivery schedule, and a labelled list of everything delivered to site that they sign off at handover. Don't leave any of this to chance.
5. Stay engaged through snagging. Even after the lead builder takes over for install, you're still on the hook for any snag relating to your fabrication. Be reachable.

What good coordination looks like

• Both you and the lead builder know the install date two weeks before it happens.
• Site is ready when items arrive (no "we needed plastering done first" surprises).
• Hardware, fittings, and consumables are on site or in the kit you delivered.
• Snags get logged once and cleared once, not bounced between you and the lead builder.
• The customer sees a single project, not two builders arguing about who does what.

Where it tends to break

• Joinery Partner books a delivery without checking site readiness — items sit in a hallway for a week.
• Lead builder hasn't performed first fix in line with joinery requirements — install gets stalled.
• Snag log isn't clear about who owns each item — both sides assume the other is handling it.
• One side starts blaming the other in front of the customer — the customer escalates to Beams.

When coordination breaks

If you and the lead builder can't agree on something operational (sequencing, an install detail, a shared snag), bring your build advisor into the loop. Don't drag the customer into operational disputes.

What this means for you

You and the lead builder are partners on this project. Both of you want the customer to be happy at sign-off. The customer doesn't need to see the seams between your work and theirs — that's your job to manage together.

Related articles

• How a joinery project runs alongside a build
• Snag-list response standard