Contents
The principles of phasing — starting with the outcome, not the work
**Why sequence matters more than most clients realise**:
A renovation programme that is not carefully sequenced creates three types of problem:
1. *Rework*: If first-fix electrics are installed in a room before the structural work is complete, and the structural work later requires cutting through the same wall, the electrical first-fix must be redone. If tiling is done before the plumbing is complete, a tile must be removed when a leak occurs. First-time fix means doing things in the right order the first time.
2. *Blocked access*: A kitchen renovation that puts the only kitchen in the house out of action for 8 weeks is a very different proposition from one where the client has a temporary kitchen set up in another room. Access conflicts — where two trades need the same space simultaneously, or where the client needs access to a room that the contractor has taken over — create delays and friction.
3. *Living in a state of perpetual disruption*: If the renovation phases are not designed with liveability in mind, there is never a point where the family has a clean, finished room to retreat to. The phasing plan should create 'islands of normality' — rooms that are completed, clean, and handed back to the family as the project progresses, so the family always has somewhere liveable.
**The fundamental sequencing rule**:
Work from outside to inside, from structure to finish, from 'wet trades' to 'dry trades':
1. *Structure first*: Demolition, structural alterations, new extensions, underpinning — all structural works complete before finishing works begin 2. *Building envelope second*: Roof, external walls, windows and doors — the building should be weathertight before internal finishes are started; wet plaster and decorating in a building with a leaking roof creates rework 3. *First-fix services third*: Electrics (wiring), plumbing (pipe runs), gas (supply and distribution), underfloor heating pipes — all service installations complete and tested before walls are closed up 4. *Insulation and boarding*: Insulation fitted, service penetrations made good, plasterboard fixed — before plastering 5. *Plastering*: After services are signed off and boarded — the slowest of the wet trades, must dry (2–3 weeks minimum for a room) before finishing trades begin 6. *Second fix and finishing*: Electrical fittings, plumbing fittings, joinery, flooring, decorating — the 'dry' phase; order matters (floor before skirting; skirting before painting; painting before floor coverings that are client-supplied)
**The overlap rule**:
In a well-planned programme, different phases run simultaneously in different zones of the house — the structural phase in the extension while first-fix is happening in the upstairs rooms; plastering in the ground floor while second-fix electrics are done in the loft; decorating in the bedrooms while the kitchen is being fitted. The contractor's programme should show this overlap explicitly — if it shows all works in strict sequence with no parallel activity, the programme is longer than it needs to be.
Practical phasing strategies for occupied properties
**Strategy 1 — Top-down phasing (for multi-storey renovations)**:
For a whole-house renovation of a London terrace, starting at the top and working down has strong practical logic:
- •The loft conversion or upper floor works are done first — the family can live on lower floors during these works
- •The first floor (bedrooms) is renovated next — the family moves temporarily to the ground floor or decants one floor's worth of furniture to the extension or a storage pod
- •The ground floor (kitchen, living, dining) is done last — this is the most disruptive phase (kitchen out of use) and by then the rest of the house is finished and the family can use the upper floors normally
*Temporary kitchen*: A temporary kitchen (a camping-grade kettle and microwave, a mini-fridge, and a folding table in a spare room or the bedroom) for a 4–8 week kitchen renovation is manageable for most families. A hot plate or compact electric hob extends the cooking options significantly.
**Strategy 2 — Front-to-back phasing (for extension + internal renovation)**:
- For a project that includes a rear extension plus internal reconfiguration of the ground floor:
- •Phase 1: Extension structure and shell (external works) — this is the most disruptive in terms of access to the rear garden and the noise of groundworks and brickwork
- •Phase 2: Internal structural alterations (opening up the rear wall between the old house and the new extension, removing any internal walls) — short but very disruptive, should be programmed as a concentrated 2–3 day event
- •Phase 3: First-fix services throughout the entire new open-plan ground floor zone (electrics, plumbing, UFH if specified)
- •Phase 4: Insulation, boarding, and plaster across the entire zone — then clear drying time before Phase 5
- •Phase 5: Second fix, kitchen fitting, and decoration — the house begins to look like a home
*During Phase 1 and 2*: The family uses the front rooms of the house and the first floor; the rear ground floor zone is handed over to the contractor; the rear garden is the contractor's working area.
**Strategy 3 — Room-at-a-time phasing (for renovation without extension)**:
- For a full refurbishment without structural extension, a room-at-a-time approach works well:
- •Empty one room completely, renovate it from strip-out to decoration
- •Hand the finished room back to the family
- •Move on to the next room, using the newly finished room if needed as temporary storage or overflow
*The advantage*: At no point is the entire house in chaos — as each room is completed, a new finished space is available. The family always has somewhere clean and usable.
*The disadvantage*: The programme is longer than a whole-house-at-once approach because trades cannot achieve economies of scale (a plasterer doing one room at a time is less efficient than a plasterer who can do all rooms in sequence). First-fix services (electrics, plumbing) that run through the whole house need to be planned to avoid disturbing already-finished rooms — which requires detailed pre-planning.
**Managing the kitchen outage**:
The kitchen is the most disruptive room in any occupied renovation. Best practices:
- •Budget for meals out or takeaways for the kitchen-out-of-use period — factor this into the overall project budget (for a 6-week kitchen installation, £50–£80/day in takeaway food = £2,100–£3,360, which is a real cost that many clients underestimate)
- •Set up a temporary kitchen in another room before the kitchen is handed over to the contractor — camping gas hob, kettle, mini-fridge, paper plates to avoid washing up in the bathroom
- •Negotiate a specific kitchen-installation handover date with the contractor — the date when you can cook a meal in the new kitchen; track the programme toward this milestone
Dust, noise, and managing the contractor relationship during occupation
**Dust management in an occupied renovation**:
Dust from plaster, brick cutting, and concrete grinding is the most pervasive quality-of-life issue in an occupied renovation. For a family with children or anyone with respiratory conditions, fine construction dust is a genuine health issue (not just a nuisance).
Practical measures:
- •*Temporary dust barriers*: Polythene sheet dust barriers at every doorway between the working area and the occupied area — fixed to the door frame with tape; zippered access doorways are available for high-traffic thresholds. Change the dust barrier daily if heavy dusty works are ongoing.
- •*Keep working areas under negative air pressure*: A HEPA air scrubber (£100–£300 to hire for the duration) draws air through the working area and exhausts it outside, keeping the working zone at lower pressure than the surrounding occupied areas — dust flows toward the machine rather than into the rest of the house.
- •*Daily cleaning at end of each working day*: The contractor should vacuum (with a HEPA-filtered vacuum) and sweep the working area at the end of every working day, and any dusty tools should be stored in the working area rather than carried through the house.
- •*Plaster and cutting dust*: The heaviest dust events are masonry cutting (use a dust-suppression angle grinder with water attachment or a diamond blade dust shroud) and floor grinding/preparation. These events should be scheduled at times when the family can be out of the house for several hours.
**Noise management**:
- Construction noise is regulated by the Control of Pollution Act 1974 and local authority codes of practice. London borough codes typically allow construction noise on residential properties:
- •Monday–Friday: 08:00–18:00
- •Saturday: 08:00–13:00
- •Sunday and bank holidays: No noisy work
- For an occupied property, agree with the contractor:
- •No noisy works before 08:30 on weekdays (to allow children to leave for school before hammering starts)
- •No noisy works during nap times for young children (if relevant) — the contractor can plan quieter finishing works during these windows
- •Advance notice (at least the evening before) if any particularly noisy works are planned the next day (e.g., concrete cutting, structural demolition)
**The contractor relationship in an occupied renovation**:
Living with a building team for several months places pressure on the contractor-client relationship. The most common causes of friction:
- •*Daily access time*: Agree start and finish times at the outset; stick to them; the contractor should not be knocking at 07:00 or leaving tools in the bathroom at 19:00
- •*Toilet and washing facilities*: Agree access to welfare facilities (a WC and hand wash) for the team; provide a designated area for the team's kettle and lunch break to keep the rest of the house clear
- •*Progress communications*: A weekly 10-minute programme update (what was done this week, what is planned next week, any issues) prevents misaligned expectations and catches programme slippage early
- •*Scope change documentation*: Any change to the scope (an additional item, a design change, a variation to materials) should be agreed in writing (even a WhatsApp message with a cost and a 'yes' reply) before the work is done; informal variations that are later disputed are the most common source of end-of-project financial conflict
Frequently Asked Questions
Should I move out for a major renovation?▼
How do I protect my belongings during a renovation?▼
What happens if the contractor falls behind programme?▼
Important Note
This guide is for general information only. Building regulations, planning rules, and legal requirements change regularly and vary by local authority. Always seek professional advice specific to your project and location. RCB Design & Build offers free initial consultations — book your free survey.