Design and build two-storey extensions in the Isle of Wight
We handle a design and build project for homeowners across the Isle of Wight, from the first visit to the final paperwork.
The Isle of Wight at a glance
- Nation
- England
- Price region
- South East England
- Postcode areas
- PO
- Towns covered
- 8 listed below, plus surrounding villages
- Site visits
- By arrangement, with travel costs agreed in writing first
What a design and build project involves
This service suits you if you want one team accountable from the first visit to the completion certificate. We manage the design, approvals and build, and the work is carried out by vetted teams working under S&K. Because the same team designs and builds, costs are checked as the design develops. Every project starts with a site visit.
The main places we list in the Isle of Wight are Newport (Isle of Wight) (PO30), Ryde (PO33), Cowes (PO31), Sandown (PO35), East Cowes (PO32) and Shanklin (PO37). We cover the villages in between too.
Fees
The design stage is priced in writing before it starts, and the build is a fixed price in writing once the design is agreed.
Rules in England
In England, design and build covers the permitted development check or planning application (£548 (or £575 for applications made from 8 December 2026)), building regulations approval from council building control or a registered approver, Party Wall Act notices where needed, and the Building Safety Act dutyholder roles. We programme them so they overlap where possible.
Approval in England: Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
Building regulations: Building regulations approval (full plans recommended) from the council or a registered building control approver, with a completion certificate at the end.
The Party Wall etc. Act 1996 applies, so notices may be needed for work on or near a shared wall or boundary.
Getting the design right
Cost checking as you design
Because the people drawing the extension also build it, each design option comes with a guide cost. That avoids the common problem of an approved design that turns out to be too expensive once builders price it.
Responsibility for the rules
In England, where more than one contractor is involved, a principal designer and principal contractor must be appointed. On design and build projects we take on these duties, so you are not left holding responsibilities you may not know you had.
How we work in the Isle of Wight
Visit by arrangement
We agree a visit to your home in the Isle of Wight and any travel costs with you in writing first, then look at the structure, access and boundaries.
Drawings and permission
Our designers produce plans and elevations, then we take care of planning or permitted development checks with the council covering Isle of Wight.
Price it properly
Once the engineer's calculations are in, we fix the build price in writing, with a clear list of what's included.
Build it
The new structure goes up first, then we open into the house, finish inside and get the completion certificate.
Towns we cover in the Isle of Wight
Design and build two-storey extensions in the Isle of Wight: questions
When is the build price fixed?
Once the design is agreed and the drawings, structural calculations and specification are complete. Before that we give guide costs at each stage. The fixed price is set out in writing before work starts, and any changes you ask for after that are priced separately before they are made.
Who builds my extension?
Your extension is built by vetted teams working under S&K, with the project managed by us from design to completion. You have one point of contact throughout, and the same team that prepared the design is responsible for the build.
What is the difference between design and build and using an architect?
With an architect, you appoint them for the design and approvals, then find and manage a builder separately. With design and build, one team does both, so cost, buildability and approvals are considered together and there is one point of contact. Some people still prefer to hire an architect separately.
Neighbouring areas
- Design and build two-storey extensions in Hampshire
- Design and build two-storey extensions in Dorset
- Design and build two-storey extensions in West Sussex
- Design and build two-storey extensions in Berkshire
All extension services in the Isle of Wight · About design and build two-storey extensions
Ready to see what a second storey could do for your home?
Visits here are by arrangement, with any travel costs agreed in writing first. We'll look at your house, talk through options and explain the approvals you'd need.