Scheduling a Small Build: Trades, Deliveries, Timing

Why sequencing matters on a small build

Sequencing matters because a trade that turns up before the one before it has finished cannot work, and a wasted day still gets billed. On a small refurb you have no float to spare. Get the order right and the site flows; get it wrong and you pay people to stand around.

Picture it. The plasterer arrives Monday, but first fix electrics are half done. He cannot skim a wall with cables hanging out of it, so he either goes home (a lost day and lost goodwill) or starts where he should not and you redo it later. Either way, money gone.

Most small builders run the programme in their head. That works on a single trade job. The moment you have five or six trades, a kitchen on order, and an inspector to call, your head is not enough. A plan on paper, even a rough one, stops the expensive collisions. This guide walks through the right order of trades, planning around lead times and inspections, where to build in buffer, and how to keep one shared plan everyone can see.

The right order of trades through a refurb

The right order follows the build itself: structure first, then the things that hide inside walls and floors (first fix), then the surfaces that cover them (plaster), then the things that sit on finished surfaces (second fix), then decoration last. Each stage depends on the one before being signed off, not just started.

Here is the logic in plain terms.

• Strip out and structure first. Demolition, openings, steels, any movement of walls. Nothing finished goes in until the shell is right.
• Make it watertight. Roof, windows, external doors. You do not want first fix or plaster getting rained on.
• First fix. Carpentry (studs, floor structure), plumbing pipework, electrical cabling, and any underfloor heating. All the stuff that lives inside the structure and gets buried.
• Plaster. Boarding and skimming, screeding floors. This covers up the first fix, so first fix must be complete and inspected before the plasterer starts.
• Second fix. Kitchen and bathroom fit, sockets and switches, radiators, internal doors, skirting and architrave. These attach to finished surfaces.
• Decoration and floors. Painting, then flooring and final tiling, then the final clean.
• Snag and hand over. Walk the job, list every defect, fix it, sign off.

The two rules people break most: starting plaster before first fix is signed off, and letting decorators or floor layers in before the dust making trades have left. Keep messy trades upstream of finishing trades and you protect work you have already paid for. If you are running several trades at once, our guide to managing subcontractors on a small site covers keeping them out of each other's way.

Sample build sequence (a programme you can copy)

Below is a realistic outline programme for a small two to three bedroom refurb. Treat the durations as a starting point and adjust to your job. The "depends on" column is the important part: that is what tells you the earliest a trade can start.

Two trades can share the site at the same stage (an electrician and a plumber both first fixing different rooms is fine), but only when they are not literally in each other's way. The skill is overlapping where you safely can without creating a bottleneck.

Planning around lead times and deliveries

Order long lead items the day the design is fixed, not the week you need them. A material that is not on site when the trade arrives stops the whole stage, and some products that used to come next day now take weeks. Lead time, not labour, is what derails most small programmes.

Material availability is genuinely tighter than it was. In October 2025, deliveries of bricks were down 4.9% and blocks down 7.1% on the year before, according to GOV.UK. Timber lead times have stretched too, with suppliers who once worked to next day turnaround now quoting several weeks for some grades. The lesson is simple: do not assume "I will get it when I need it".

Build a short lead time list at the start of every job. Typical long pole items on a refurb:

• Windows and external doors (often the longest, order before you even start stripping out)
• Kitchen units and worktops, especially anything bespoke or stone
• Bathroom suites and special tiles
• Bespoke joinery, staircases, structural steel
• Boilers and specific heating kit during peak demand

For everything else, book deliveries to land just before the trade needs them, not weeks early. A pallet of plasterboard dropped a fortnight too soon is a pallet getting rained on, walked round, or pinched. Confirm the delivery slot, confirm site access, and make sure someone is there to take it in. A missed delivery often means going to the back of the queue. Tracking material orders alongside your costs also keeps the budget honest, which we cover in building a small development budget.

Booking inspections at the right moments

Book building control inspections to land exactly when a stage of work is ready to be covered up, and never bury work the inspector still needs to see. On most jobs you give at least one whole day's notice, and the work should pause at that point so the inspector can attend, according to the Planning Portal.

The classic mandatory hold points on a small build are foundations and excavations (before pouring), drainage (before backfilling), and the damp proof course, plus a completion inspection at the end. The principle behind all of them is the same: the inspector has to see the work before it disappears behind concrete, backfill or plaster.

The trap is obvious once you see it. If your groundworker is ready to backfill the drains on Friday but you have not booked the inspection, you either wait (lost time) or cover up and risk being told to dig it back out. Both cost money. Treat each inspection as a fixed event in the programme with its notice period baked in, exactly like a delivery, and put the call in a day or two ahead, not on the morning the trade is over the trench.

Building in buffer for slippage and weather

Add buffer deliberately, because something always slips: a delivery is late, a wall is rotten behind the plaster, the weather turns. A programme with zero slack is a fantasy. A small contingency in time is the difference between absorbing a problem and the whole job dominoing.

A practical approach for a small refurb:

• Per stage: add roughly 10 to 20% to your honest estimate for each stage. If you genuinely think first fix is four days, plan five.
• Weather exposed work: give roofing, external rendering and groundworks extra room in the wetter months. Rain stops these trades cold and you cannot bill the client for the sky.
• One whole job buffer: keep a few days of float at the end of the programme rather than promising the client the absolute earliest date. Under promise on the finish.
• A money buffer too: schedule slip and cost slip travel together, so a sensible contingency in the budget backs up the time buffer.

When something does slip, write down why and by how long. A dated note of "rained off Tuesday and Wednesday, roof on hold" is exactly the contemporaneous record that backs up a delay claim or a conversation with the client later. A running construction site diary makes this almost effortless, and protects you if a dispute ever reaches adjudication, the 28 day "pay now, argue later" process either party can trigger under the Construction Act, per legislation.gov.uk.

Coordinating labour so the site is never idle or overcrowded

Coordinate labour so each trade arrives the day its dependency is genuinely finished, not a day too early (idle, paid, annoyed) and not so many at once that they trip over each other. The target is a site that is always busy but never crowded, with one stage flowing cleanly into the next.

Three habits make this work on a small job:

1. Confirm the day before. A two minute call or message the evening before ("first fix is done, you are good for plastering at 8") saves a wasted morning. Trades remember who wastes their time.
2. Give every booking a "ready when" condition. Do not just book the plumber for Tuesday. Book him for "after the carpenter has the floor down", and check that condition is met before he travels.
3. Stagger, do not stack. If two trades must share a room, sequence them by hours, not days. Six people in a small terrace at once is chaos; the same six across the week is a smooth job.

The single biggest waste on small sites is the trade who turns up and cannot start. Tight coordination is not about cracking the whip, it is about respecting people's time so they keep coming back.

Keeping a simple shared plan everyone can see

Keep one plan, in one place, that every trade can look at, because a schedule that lives only in your head cannot be shared, and a schedule scattered across texts and a paper diary cannot be trusted. The plan does not need to be fancy. It needs to be current and visible.

For many small builders that is a whiteboard in the van or a shared spreadsheet. The catch is keeping it current when you are on the tools all day, and making sure the version a subbie saw on Monday is still right on Thursday. The moment the plan and reality drift apart, people stop trusting it and you are back to running it from memory.

This is where a planner that lives with the rest of the project earns its keep. In Build & Let, the planner sits alongside the budget, tasks, snagging and site diary for the same development, so delivery dates, inspection bookings and labour slots are all in one timeline the team can see, rather than spread across a phone, a notebook and a group chat. The point is not the software, it is that one shared, current plan beats five private ones every time.

Frequently asked questions

What order do trades go in on a refurb?

Structure and strip out first, then make the building watertight, then first fix (carpentry, plumbing pipework, electrical cabling), then plaster, then second fix (kitchen, bathroom, sockets, doors), then decoration, then floors and final tiling, and finally snagging and handover. Each stage should be signed off before the next begins.

When should I book building control inspections?

Book them so the inspector sees work before it is covered up: foundations before pouring, drainage before backfilling, and the damp proof course, plus a completion inspection. You usually give at least one whole day's notice and pause the work at that point, according to the Planning Portal.

How much buffer should I add to a small build programme?

Add roughly 10 to 20% to each stage estimate, give weather exposed trades like roofing and groundworks extra room in wet months, and keep a few days of whole job float at the end. Back the time buffer with a matching cost contingency, since schedule slip and cost slip usually arrive together.

Why do builds run over even when everyone works hard?

Usually because of dependencies and lead times, not lazy trades. A late delivery, an inspection not booked, or a trade starting before the previous one finished stalls the whole sequence. Hidden problems behind walls and floors add to it. Planning the order and ordering long lead items early prevents most of it.

What should I order first on a refurb?

Order the longest lead items the day the design is fixed: windows and external doors, kitchen units and worktops, bathroom suites, bespoke joinery, structural steel, and boilers in peak season. These commonly take weeks, and with brick and block deliveries down year on year per GOV.UK, assuming next day supply is risky.

Pulling it together

A small build does not need project management software the size of a skyscraper job. It needs one clear order of trades, long lead items ordered early, inspections booked as fixed events, honest buffers, and one plan everyone can see. Get those right and the site flows.

If you are tired of running the programme from a notebook and a group chat, Build & Let keeps your planner, budget, snagging and site diary together for each development, with a 14 day free trial (card required, cancel anytime). Plan the build once, share it with the team, and stop paying for wasted mornings.