Planning, building regulations and structure from £1,385
One survey, one set of drawings that carries from the planning application to the builder, and the structural calculations coordinated with it all, for a single fixed fee.
£1,385 £1,235 drawings + £150 survey (£1,385 total), no VAT to add
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The short answer
The complete package covers the three jobs most extensions need in order: planning drawings, building regulations drawings and structural calculations. Our starting fee is £1,235 drawings + £150 survey (£1,385 total), no VAT to add; the exact figure is fixed after we check your address. Council fees are separate.
Complete package: planning, building regulations and structural calculations
from £1,385
- Drawings
- £1,235
- Measured survey
- £150
- Total you pay
- £1,385
- VAT
- None to add
- One measured survey, used for every stage, so the drawings agree from planning to build
- Planning drawings and the application, submitted for you, with location and block plans included
- Building regulations drawings: construction details, insulation, drainage, fire and ventilation
- Structural calculations coordinated with the drawings, so beam sizes appear on the sections
- Community Infrastructure Levy forms where they apply, included with the planning application
- An independent check of every sheet, and free redraws of our drawings until approval
£1,235 drawings + £150 survey (£1,385 total). A starting fee: we confirm one fixed figure after checking your address. The council’s own fee, where there is one, is paid to the council.
Get my fixed feeHow the package runs with us
Address check and fixed fee
We check the address and confirm the exact fee in writing before you commit.
Survey and design
One survey, then options in plan and 3D until you choose in writing.
Planning
The planning set is drawn and submitted, and we answer the officer until the decision.
Building regulations and structure
The technical set and the calculations are drawn from the approved design and submitted to building control.
Hand-over
You receive the approved sets and a next-steps list: notices, start dates and the builder’s drawings.
Why one package saves rework
Planning and building regulations ask different questions of the same design. Planning looks at how it sits in the street and against the neighbours. Building regulations ask whether it stands up, keeps warm, drains and lets people out in a fire. When one team draws both from one survey, a change to a window or a beam position appears on every sheet once.
The structural calculations are the link. A beam sized after planning, by someone who has not seen the drawings, often forces a change to a ceiling height the council has already approved. In the package the sizes are known early and shown on the sections.
The route, and the time limits to know
A householder application is decided within 8 weeks, or a longer time agreed in writing, and an appeal is possible if it is not (guidance). Planning permission normally lasts 3 years from the date it is granted to start the development (guidance). The council fee for a householder application is £548 from 1 April 2026 (GOV.UK).
Building regulations approval comes from your local authority building control or a private registered building control approver, your choice, as GOV.UK explains. Without approval you will not have the certificates you need when you sell.
What is not in the package
The council’s application fee and building control charges are paid to them. Party wall notices, specialist reports a council may ask for, and any work after approval are separate, and we say which are likely when we fix the fee.
Where one part of the package is not needed, for example when the work is permitted development and needs a certificate, not a planning application, we say so and quote the parts you do need.
Planning permission drawings · Building regulations drawings · Structural calculations
The route in numbers
8 weeks
Decision period for a non-major application such as a householder extension, unless a longer time is agreed in writing.
3 years
The usual time to begin development after planning permission is granted.
Source: Planning Practice Guidance: use of planning conditions (GOV.UK)
£548
Council fee for a householder application on one house from 1 April 2026.
Source: Planning fees: annual indexation from 1 April 2026 (GOV.UK)
2 routes
Building regulations approval from the local authority or from a private registered approver.
3 loads
Dead, imposed and wind loads must be carried safely to the ground under Requirement A1.
Source: Approved Document A: structure, 2004 edition with 2013 amendments (GOV.UK)
0.18
Maximum U-value, in W/m²K, for a new wall in an existing dwelling.
Source: Approved Document L volume 1: conservation of fuel and power, dwellings (GOV.UK)
2 months
Notice before work on a party structure, such as a beam bearing on a shared wall.
Source: Party Wall etc. Act 1996, section 3 (legislation.gov.uk)
Questions about the package
Why does the fee say “from”?
The starting figure covers a standard house. We check your address first, because an unusual plot or a conservation area can change the work, and then fix the fee in writing before you commit.
Can I buy the parts separately?
Yes. Each is sold on its own at its own fixed fee. The package suits an extension or loft that needs all three, from one survey.
Is the package cheaper than the parts?
Compare the totals shown on each service page with the package total on this one. We do not claim a saving beyond what those published figures show.
Do I need all three if my project is permitted development?
Not always. Permitted development needs no planning application, though you may want a certificate. Building regulations and structure still apply. We quote only what the project needs.
Plan, regulate and build from one set of drawings
Send the address and what you want to build. We reply with the exact fee, starting from £1,235 drawings + £150 survey (£1,385 total).