House extensions, lofts and conversions
One firm. Drawings to keys.
Most people building an extension hire a designer, then hire a builder, and spend the next nine months standing between the two of them. We do both. One contract, one accountable party, and nobody to point at when something goes wrong.
Start here
Two questions worth answering before you spend anything
Do you even need planning permission?
A great many extensions, lofts and garden rooms are built under permitted development, without a planning application at all. Answer a few questions and we will show you exactly which national rules apply to your project — and, just as importantly, which ones a web form cannot check.
What will the drawings cost?
An indicative fee range for the drawings and the planning application, handled from measured survey through to the council’s decision. Three questions, about a minute. No email required to see the number.
Both tools give indicative guidance only. Nothing they show is a quotation, a determination, or binding on anyone.
Why one firm
The gap between the drawings and the build is where projects go wrong
No blame gap
When the designer and the builder are different companies, every problem on site becomes an argument about whose fault it is. You are the one standing in the middle, and you are the one paying for the delay.
We price what we drew
We tender against drawings we produced ourselves. There is less to discover on site, and far less scope for the “unexpected” to appear halfway through.
Signed off and documented
Building control final certificates and the paperwork a buyer’s solicitor asks for at resale. The step cowboy builders skip is the step we finish on.
If you have already been let down
We take over unfinished and failed jobs
A builder who has stopped answering the phone. Work that will not pass building control. An extension that was never signed off, discovered by a buyer’s solicitor years later. These are not comfortable conversations, but they are ones we have regularly — and they are fixable more often than people expect.
We will survey what has been built, tell you honestly what has to come out and what can stay, and give you a fixed price to finish it properly and get it certified.
What we do
Extension types
We are not limited to houses. Blue Apple works across care homes, medical and clinical settings, schools and nurseries, offices, restaurants and hotels, HMO and rental property, community buildings and places of worship — new build, extension, refurbishment and fit-out, anywhere in the United Kingdom.
What you get
Everything under one roof
- Measured survey of your property
- Existing and proposed plans, elevations and site plan
- Design revisions with you before anything is submitted
- Planning application prepared, submitted and managed
- All correspondence with the council handled for you
- Building regulations drawings and specification
- Structural engineer coordinated on your behalf
- Construction, with building control signed off at the end
Who you are dealing with
Twenty years of technical delivery, on considerably larger buildings
Blue Apple is led by a Senior Architectural Consultant with more than twenty years in the industry. That experience was earned on hospitals, schools and commercial buildings — including a £150m specialist children’s hospital in London, a €2.2bn national hospital programme — one of Europe’s largest — and school projects across London and the South East.
It is unusual experience to bring to a domestic extension. It shows up in the parts of the job most homeowners never see: fire strategy, structural coordination, drainage, thermal detailing, and drawings a building control officer can approve without a fight.
London based
We work throughout London and across the United Kingdom.
One point of contact
The person who draws it is the person accountable for building it.
Fixed price, open book
A fixed price against the drawn scope. If something genuinely unforeseen appears, you see the actual invoices.