Planning a house extension? Understanding the timeline helps you prepare for the journey ahead and set realistic expectations for when you’ll be enjoying your new space.
Planning and Design Phase (2-4 months)
Before any building begins, you’ll need architectural plans and planning permission (if required). This phase includes initial consultations, detailed drawings, structural calculations, and submitting applications. Permitted development rights can speed this up, but full planning applications typically take 8-12 weeks for council approval.
Pre-Construction Preparation (2-4 weeks)
Once approved, you’ll need to finalise contractor selection, order materials, and arrange building control inspections. This preparation phase ensures everything’s ready for a smooth start to construction. For Home Renovations Charlton Kings, visit https://precisionbuildersltd.co.uk/services/home-renovations/charlton-kings/
Construction Timeline by Extension Type
Single-storey rear extensions: 8-12 weeks
Double-storey extensions: 12-16 weeks
Side return extensions: 6-10 weeks
Wrap-around extensions: 14-20 weeks
Loft conversions: 6-8 weeks
Factors That Affect Duration
Weather conditions can delay outdoor work, while complex structural requirements or unexpected issues (like discovering asbestos) can extend timelines. Material availability, particularly for specialised items, can also impact schedules.
The Reality Check
Most homeowners should expect the entire process, from initial design to completion, to take 6-12 months. Single-storey extensions typically complete faster, while complex double-storey projects may take longer.
Planning for Disruption
Remember that living through construction means noise, dust, and temporary loss of facilities like kitchens or bathrooms. Plan alternative arrangements and build buffer time into your expectations.
Patience during the process ensures you’ll love the final result for years to come!
