Chartered Civil Engineer · 10+ years’ experience

Planning drawings £500. Building regs from £1,250.

We draw the plans your council and your builder need, for a fixed price agreed up front. We visit the property, survey it properly and talk the project through with you before anything is drawn.

Free: the 27-point extension checklist Everything we check before a drawing leaves the desk. Written for homeowners, not engineers.

What it costs

Fixed prices for a typical terraced, semi-detached or detached house. Anything bigger or unusual is priced individually, still fixed before we start.

Planning drawings£500
Site visit and measured survey, then existing and proposed plans, elevations, site and location plans. Everything the council needs.
Building regulations package£1,250
Foundations, steel sizing, insulation. What your builder builds from.
Beam, column & foundation design£300+£150 each after
Signed calculations for building control.
Build over agreement£500
For building over or near a public sewer.
Bill of quantities£500
Material take-off, if you're buying materials yourself.

Council fees are separate and paid by you, directly to them. We never mark them up, and what you pay depends on which route your project takes. If it is permitted development there is no application fee at all. Prior approval for a larger rear extension is £249. A Lawful Development Certificate is £274. A full householder application is £548. Building control set their own charge on top. We will tell you which applies to your project before you commit to anything.


How it works

Three steps, from first message to drawings in your hands.

1

Message usSend your address and roughly what you want to build. We'll check whether you even need planning permission. Free, and if you don't need us we'll say so.

2

Site visitWe come out, survey the property properly and talk the project through with you on site, so we understand what you actually want before anything is drawn.

3

DrawingsFirst draft about a week after the visit, with one round of changes included. Once you're happy, the full pack is issued to you.


Watch the reels

One planning or building regs rule explained in each clip.


Common questions

Do I actually need planning permission?

Often not. Most single-storey rear extensions fall under permitted development, so no planning application, though you still need building regulations approval. Send us your address and we'll check your property. That check is free.

Do you visit the property?

Yes. We come out, carry out a full measured survey and go through the project with you on site. It is much easier to spot the constraints and the opportunities standing in the room than it is from a description, and it means the drawings are built on our own measurements.

£500 sounds keen. What's the catch?

There isn't one. It's £500 because we keep the practice lean and do this work day in, day out, not because anything is left out. You get a full drawing set including the site visit and survey, checked and approved by a Chartered Civil Engineer.

Are you really a Chartered Engineer?

Yes. In the UK it's unlawful to call yourself a Chartered Engineer if you're not registered, because it's a protected title. Our team produce the drawings and the Chartered Civil Engineer checks and approves everything that goes out.

Can my builder build from these?

That's the point of the building regs package. Insulation build-ups, foundation sizes, steel sections, joist and rafter spans. Enough for a builder to price it accurately and build it without ringing you every morning.

Do you work outside London?

Yes, anywhere in England. We deal with any local authority, and have worked with councils from Cornwall to Northumberland.

Tell us what you're planning

Free to ask, no obligation, usually answered the same day. A photo or a rough sketch is a perfectly good start.

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