Extensions and remodels
Major house extensionsacross four counties
Designing and building major extensions and whole-house remodels for private clients across Hertfordshire, Buckinghamshire, Bedfordshire and North London.
One team
House extensions, designed and built by one team
The house is right, the location is right, but the way it works no longer suits how you live. Moving means stamp duty, fees, upheaval and compromise. Extending means getting exactly the house you want, provided it is designed and delivered properly.
We handle design, permitted development or planning, structural engineering and construction as one accountable team, with a fixed programme and weekly reporting throughout.
£2,200, £3,200
Typical cost per m²
3 to 5 months
Design, planning and pricing
3 to 5 months
On site, single storey
PD
Permitted development often applies
The decision
Why extend rather than move?
You already love where you live
Schools, neighbours, the walk to the station. Extending keeps everything that made you buy the house in the first place.
Moving costs more than people think
Stamp duty, agents, legals and removals rarely leave much change from the cost of reshaping the ground floor properly.
You get exactly what you want
A layout designed around how your family actually lives, rather than compromising on someone else's floor plan.
Our process
The same four stages, at extension scale
Whether it is a rear extension or a whole-house remodel, the discipline is identical: understand the risk before spending money on design.
Discover
01Project Calculator
An honest starting number before you commit to anything.
Define
02Feasibility Study
We test whether your project genuinely works before money is spent on design.
Prepare
03Pre-Construction Service Agreement
Everything is resolved on paper so the build starts already solved.
Deliver
04Construction and Handover
One team builds it, reports on it, and hands you the keys.
Every kind of extension
Under one roof
Five specialisms, delivered by our trusted trade team with coordinated design, engineering and cost reporting.
Single Storey & Rear Extensions
Kitchen and living space that changes how the whole house works, detailed to sit properly against the original building.
Double Storey Extensions
Added bedrooms and living space in one structural move, with the planning and engineering handled together.
Wrap-Around Extensions
Side and rear combined to reshape the ground floor entirely, usually the most transformative option available.
Whole-House Remodels
Reconfiguring an entire house alongside the extension, so the original rooms work as well as the new ones.
Replacement Dwellings
Where an extension has reached its limit, a new house on the same plot, designed and built by the same team.
Extension case studies
Recent extension and renovation work
FAQs
Extension questions, answered
As a working range, £2,200 to £3,200 per square metre depending on structural complexity, glazing, site access and finish level. Complex structural work and high specification sit above that range. A written cost plan follows the feasibility stage.
Extensions and conversions delivered across St Albans, Harpenden, Radlett, Potters Bar, Hemel Hempstead and Berkhamsted.
Thinking about extending?
Know your budget before you commit
Use our project calculator to get an indicative range for your extension in under a minute. It is always step one.