Building Control drawings
Building Control drawings for structural and extension work
Building Control drawings explain how the work is built safely, not just what it looks like on plan.
This is the downstream step when the project needs technical detail, structural input or inspection sign-off.
Short answer
What this means
Building Control drawings and supporting information help inspectors assess structure, insulation, fire safety, ventilation and the construction details that matter on site.
For your home
Why it matters
If you are removing walls, installing steels or building an extension, the technical route needs to be lined up before work is covered up.
Next step
What to do now
Send your drawings, photos and the proposed work. We will explain whether Building Control detail or structural design is needed next.
Who is behind the advice
Local project advice from Josh and PlanBuild.
The page exists to help homeowners work out the practical route before drawings, structure, permissions and builder pricing become separate conversations.
Who
PlanBuild gives local project advice for homeowners around Poole, Bournemouth and Dorset.
How
We start from photos, address, existing plans, site constraints and the likely approval or build route.
Why
The aim is to point you at the right next step before you waste money on the wrong drawing, quote or contractor conversation.
Good fit
- structural wall openings
- RSJ work
- extensions
- work needing inspection sign-off
Not the right route if
- early layout-only ideas
- cosmetic-only changes
What to send first
- existing/proposed plans
- photos
- engineer notes if available
- builder quote if you have one
Related routes
Keep the route connected
Floor plans
Floor plans show what is there now, what you want to change, and give the council, engineer, Building Control or builder something precise to work from.
Open route →Wall removal
A load-bearing wall can often be removed, but it normally needs assessment, structural calculations, a steel or beam solution and Building Control sign-off.
Open route →RSJ installation
RSJ installation usually needs structural calculations, the correct bearing details, safe propping, installation sequencing and Building Control inspection.
Open route →Questions homeowners ask
Before you choose the route
Is Building Control the same as planning?
No. Planning considers whether the work is acceptable in principle. Building Control checks how the work is built safely and correctly.
Do I need Building Control for removing a wall?
Structural alterations usually need Building Control because the support, beam and making-good need to be inspected.
Free first response
Tell us what you’re planning.
Whether it’s a bigger kitchen, an open-plan downstairs or a wall you’ve pictured coming down for years, send the details here first. We’ll point you at the cleanest next step:
- “Who do I speak to first?”
- “What’s the actual first step?”
- “Does my project need planning permission?”
- “Do I need Building Control?”
- “Which certificates do I end up with at the end?”
- “Who keeps the whole thing compliant?”
Drop a few details below and we'll tell you who should be involved first: designer, engineer, Building Control or builder.
Start here hub page
Not sure which drawings, approvals or builder route you need?
Use the floor plans hub first. It explains whether your home improvement starts with existing/proposed plans, planning drawings, Building Control, structural calculations or a builder quote pack.
See the floor plans and drawing route →Quickest route: send the project details, or call if it is urgent.