When Should Interior Planning Begin During Home Construction?
Why interior decisions belong before plaster, not after handover — which choices affect electrical, plumbing, ceilings and walls, and a stage-by-stage timeline for making them.
Most homeowners think of interiors as what happens after the builder leaves. In practice, a large share of interior decisions are locked in by the time plaster goes on: where the TV wall is, where the kitchen appliances sit, whether a room has a false ceiling, where the wardrobes stand. Making those decisions late is the most common reason a finished home gets chases cut into fresh walls.
Decisions that affect construction
| Interior decision | What it changes on site | Must be fixed before |
|---|---|---|
| Kitchen layout and appliances | Electrical points, water and gas lines, chimney duct, sink position | Plumbing rough-in and electrical conduits |
| Wardrobe and bed positions | Switch and socket positions, AC location | Electrical conduits (before plaster) |
| False ceiling per room | Ceiling light points, AC drain routes, slab-level vs ceiling-level conduits | Slab electrical, then before plaster |
| TV / media wall | Concealed conduits for cables, socket cluster | Before plaster |
| Bathroom fixtures | Shower, WC and basin positions; concealed diverter; niche | Plumbing rough-in and waterproofing |
| Smart-home automation | Neutral at switchboards, extra conduits, hub location | Electrical conduits |
| Flooring type and thickness | Floor level, door heights, threshold details | Before door frames and screed |
A timeline that works
- At design stage (before quotation): furniture layout for every room; kitchen concept; which rooms get false ceilings. This is enough to fix electrical and plumbing layouts — see Electrical Planning Before Plaster.
- Before slab of each floor: ceiling points and AC routes for that floor.
- Before plaster: every wall point and chase; bathroom fixture positions; niche and diverter locations.
- Before flooring: floor finish selected (thickness decides levels); door and frame heights.
- After painting: loose furniture, curtains, decor — the only truly "after" decisions.
What happens when interiors come late
- Chases cut through finished plaster for a forgotten socket — and hairline cracks along the chase a year later.
- A false ceiling added after the electrical is done, so every ceiling point has to be re-routed.
- A kitchen designed around appliances the plumbing did not allow for; the sink moves and so does the drain.
- A modular wardrobe that does not fit because a switchboard sits where its side panel should.
Frequently asked questions
Should I hire an interior designer before construction starts?
If you intend to use one, yes — at least for the layout stage. The designer's furniture plan and ceiling plan are inputs to the electrical drawings.
Can interiors be part of the turnkey contract?
Modular kitchen, wardrobes and false ceilings can be scoped and priced separately — our interior packages do this — but even if you buy them later, their positions should be fixed in the construction drawings.