The essentials in 30 seconds
- Site supervision is a duty of care (an obligation of means, not of result): your protection is the written, dated record of every visit, decision and change.
- The ritual: a weekly visit, a site report sent to everyone, dated photos, stepped up at the interfaces between lots.
- The schedule is built by lot, with dependencies (plumbing before tiling): it is what absorbs delays without a domino effect.
- No change without a written, priced approval from the client as it arises: additional works approved verbally are the leading cause of disputes.
- Never a direct client-contractor exchange without you: everything goes through a single channel, otherwise decisions get made with no record.
What "supervising the works" means for an interior designer
The supervision assignment is often the one that decides your reputation: it is where the client sees you work. It consists of coordinating the contractors, checking that the execution matches the project, running the site meetings, keeping the client informed and documenting progress. Legally, it is a duty of care (an obligation of means, not of result): you must apply the diligence of a professional, not guarantee an outcome. Your best protection is therefore the record: dated site reports, photos, written decisions.
Two rules structure the framework, following on from what we detailed on inviting contractors to tender: contracts for the works remain between the client and each contractor directly, since the interior designer is not a general contractor; and no direct exchange between the client and a contractor should happen without you. This is not control for control's sake: every side conversation produces decisions with no record, contradictory instructions, and cost overruns nobody owns.
The weekly ritual: visit, site report, photos
Effective supervision is boringly regular. One visit a week at cruising rhythm, anchored to a fixed site meeting with the contractors involved; more at the critical moments: the start of the works (setting out, services), the interfaces between lots, the final weeks before handover.
Every visit produces the same deliverable, the site report, sent to everyone within 24 hours:
- Who attended and who didn't, because a contractor repeatedly missing the site meeting is a warning signal to put on record.
- Progress by lot, compared with the schedule, with what remains to be done.
- Decisions made, named and dated: who does what, by when.
- Blocking points and who owns them: a question left unanswered at day 7 becomes a delay at day 30.
- Dated photos, systematically, including of what will soon be hidden (services before the partitions are closed up): they are what will settle the debates at handover.
One point of discipline that looks bureaucratic and isn't: a visit without a site report is a visit that, legally, never happened.
Scheduling by lot: the schedule that absorbs delays
A useful works schedule is not an end date scribbled down: it is a schedule by lot with its dependencies. Plumbing before tiling, electrics before painting, joinery measured early because its manufacturing lead times are the longest. Built this way, the schedule becomes a decision tool: when a lot slips by a week, you immediately see which lots absorb the delay and which ones propagate it.
The right reflex is to read it at several scales: by the week to steer the contractors, by the month to keep the client informed, over the full duration to protect the handover date. And to update it at the rhythm of the site reports: a schedule that is three weeks old is a fiction nobody consults any more. This is step 3 of the preparation described in our 11-step project management method.
Additional works: the discipline that saves the handover
There will be changes. A client visiting their site has ideas; opening up a partition reveals a surprise; a product is no longer available. The point is not to prevent changes, it is to track them: no change goes ahead without being written down, priced and approved by the client, as it arises, never in one block at the end.
The healthy circuit, in line with the frozen cost plan that serves as the reference works budget: the request becomes a line of additional works, with its description and its amount; the client approves it, and the approval is dated; the contractor executes. Three protections in one: the client knows what they will pay before the work starts, the contractor has a dated agreement before executing, and you avoid the surprise catch-up invoice that turns a handover into a negotiation. Changes approved verbally at the edge of the site are the leading cause of end-of-project disputes.
The standard ritual, week by week
| Moment | The action | The deliverable |
|---|---|---|
| Weekly site meeting | Visit + meeting with the contractors on site | Site report sent within 24 h |
| During the visit | Dated photos, including what will be hidden | Chronological photo file |
| After every decision | Write down who does what, by when | Named decisions in the site report |
| At every change request | Price it, get it approved before executing | Additional works tracked and approved |
| Every end of week | Update the schedule by lot | Up-to-date schedule, shared with the client |
| Interfaces between lots | Extra verification visit | Defects (snag list) cleared before the next lot |
WhatsApp, email, or an integrated tool?
The method above can be kept up with a phone and a word processor. Many studios do, and pay the hidden price: photos in WhatsApp, decisions across three email threads, the schedule in an outdated PDF, the client calling because they don't know where their site stands. Every piece of information exists, but none of it is in the same place, and the end-of-project reconstruction costs hours of non-billable time. We described this syndrome in freeing yourself from coordination.
The criterion for choosing a tool is the same as for the rest of your management: continuity. A relevant supervision tool connects the site to what precedes it, the reference works budget produced by the tender, and to the people living it: the contractors you invite onto the project, and the client who follows progress from their portal instead of calling you.
So, what about Nodal?
Nodal equips this ritual end to end. The schedule is built by lot and reads at several scales, from day to month, with a built-in calendar. The contractors selected at tender are invited onto the project, each seeing only what concerns them. The frozen cost plan serves as the reference works budget, and every piece of additional works follows the clean circuit: a line added to the tracking document, an amount, and a time-stamped client approval as it arises. The client, meanwhile, follows progress from a portal under your brand: fewer "where are we?" calls, more dated records. All in the same tool that handled the incoming enquiry, the concept and the tender, with no re-typing.