Renovation timeline planning is consistently underestimated. Homeowners budget carefully, source good contractors, choose the right materials — and then watch the whole project slow down because two trades needed the same space on the same week, or a delivery arrived before the surface was ready for it.
Bad timing is often more expensive than bad budgeting. Delays compound. Contractors sit idle on dayrates. Materials sit in a van. Work gets undone. The end date moves, and everything attached to the end date moves with it.
Understand which phases must be sequential versus parallel
Not everything in a renovation has to happen in order. Understanding which phases are genuinely dependent on each other — and which can run in parallel — is the foundation of a realistic timeline.
The basic rule is: structural and wet trades first, dry trades after, finishing last. Specifically:
- Structural work (removing walls, underpinning, lintels) must happen before anything else
- First fix electrics and plumbing must go in before walls are closed
- Plastering and screeding happens after first fix, before second fix
- Tiling happens after screeding is set — usually 28 days for a sand/cement screed
- Joinery, kitchen, and bathroom fitting is second fix — after surfaces are done
- Decorating is last
Within those constraints, some things can overlap. While plasterwork is drying, a joiner can be building a staircase in a different part of the house. While tilers work on the bathroom, a decorator can be prepping walls elsewhere. The skill is identifying genuine dependencies versus assumed dependencies.
Getting this wrong is common. A bathroom tiler arriving before the screed has cured — a real example — sets the whole project back by three weeks. Not because anyone was careless, but because no one checked.
Give each phase a realistic buffer
Trade durations have a habit of expanding. A plasterer who quotes three days for a room will often take four. A kitchen fitter who starts on Monday may not finish until Thursday the following week. Materials ordered for Tuesday arrival sometimes come Friday.
Build buffers into each phase. A rough guide for common phases:
- Structural changes: planned duration plus four working days
- Plastering a medium room: three to five days setting time after completion before painted or tiled
- Screed floors: minimum 28 days before hard tiling (lightweight screeds can be faster — confirm with supplier)
- Kitchen installation: three to six days depending on size and complexity
- Bathroom: five to ten days for a full strip and refit
These aren’t luxuries. They’re calibrations for how trades actually work. A timeline that assumes everything goes to plan has never met a renovation.
And as renovation budget planning applies a contingency to cost, a good timeline applies a contingency to time. Add ten percent to your total schedule as a buffer before you give anyone a completion date.
Plan for contractor availability, not just task duration
Here’s the timeline problem most homeowners don’t see coming: even when you know exactly when you need a trade, that trade may not be available then.
Good contractors book out weeks or months in advance. The plasterer you want may not be free until three weeks after you need them. The electrician returning for second fix has other jobs between your first and second fix stages. The tiler you liked has a two-week gap in their schedule that doesn’t align with yours.
Plan contractor availability before you finalise the timeline. When you’re booking trades, ask: when are you next free, and for how long? Build the timeline around those answers, not the other way around. This is where most renovation timelines fail — they’re built around ideal availability, not actual availability.
Build your milestone list before your task list
Most people plan renovations as a list of tasks. A better starting point is a list of milestones — the key moments where the project meaningfully changes state.
For a kitchen renovation, milestones might be:
- Old kitchen removed
- First fix electrics and plumbing complete
- New floor screed laid and cured
- Wall tiles complete
- Kitchen units installed
- Appliances connected and tested
- Snagging complete, project closed
Work backwards from the end date. If you want to move into the kitchen by week ten, when does the kitchen have to be installed (week eight)? For that to happen, when does tiling need to be done (week six)? And so on.
Milestones give you checkpoints. When you reach milestone three on schedule, you know the project is on track. When you miss it, you know early enough to adjust.
Keep one person accountable for the timeline
Group ownership of a renovation timeline means no ownership. When everyone is responsible, no one is watching.
One person needs to own the schedule — track where each phase stands, chase contractors who are late, flag when a dependency is at risk, and make the call when something needs to move. In most home renovations, that person is the homeowner.
RevoHolm’s timeline feature gives that person a single view of all active phases, upcoming milestones, and any task that’s behind. No spreadsheet to maintain, no calendar juggling: the project state is visible in one place, on any device, whenever you need it.
Managing a renovation? RevoHolm keeps your timeline, budget, contractors, and documents in one place. Start for free →