Most building work needs building-regulations approval, and in England there are two ways to get it: a Full Plans application or a Building Notice. They sound similar but work very differently, and the right choice affects how much certainty you have before work begins. Here's how Wirral homeowners can think about it.
In short
There are two building-control routes. A Full Plans application has your drawings checked and approved before work starts — the safer choice for extensions, lofts and garage conversions. A Building Notice has no plan check, so problems usually only surface on site. SC Design prepares the building-regulations drawings; we don't carry out the build or act as building control.
Not sure which route applies to your property? Send Sean your postcode, a few photos and a short description for an honest first view — with no obligation.
Reviewed by Sean Corser, SC Design & Construction. Sean Corser helps Wirral homeowners with architectural design and drawing packs for extensions, loft conversions, planning and building regulations.
Last reviewed June 2026
With a Full Plans application you submit detailed drawings and specifications before work starts, and building control checks them against the regulations. Wirral Council asks for full, detailed drawings and specifications — plus structural calculations where they apply — so the proposal can be assessed properly.
The advantage is that problems are identified on paper, before anyone is on site. You get a documented decision you can rely on, and your builder is pricing and building from approved information.
A Building Notice is a lighter-touch route that can be used for many domestic alterations and extensions. You give notice of the work and pay the charge, but there is no plan-checking stage.
Wirral Council is clear that a Building Notice is not subjected to any plan assessment — and even if you do submit plans with it, they will not be checked for compliance. Compliance is confirmed through inspection as the work proceeds, which means an issue may only come to light after that part of the work is built.
Even on a Building Notice, clear drawings are worth having: your builder needs to know exactly what they're pricing and building, and structural calculations may still be required separately for beams and openings.
Drawings are what turn 'roughly this' into a defined, comparable scope — which is how you avoid surprises on cost and quality once the work is under way.
For anything structural — extensions, loft conversions and garage conversions — the Full Plans route is usually the safer choice, because the detail is checked before you commit money and time. Wirral points homeowners who want the peace of mind of an approved plan before works commence towards Full Plans.
A Building Notice can suit simpler, well-understood work, but it may be unsuitable for complex projects. The table below sums up the trade-off — but the right call always depends on your specific project.
| Full Plans | Building Notice | |
|---|---|---|
| Plans checked before work? | Yes — assessed against the regulations | No — not plan-assessed |
| Certainty before starting | A documented decision up front | Confirmed by inspection as work proceeds |
| Usually suits | Extensions, lofts, garage conversions, structural work | Simpler, well-understood alterations |
| Main risk | More paperwork up front | Issues may surface after work is built |
We prepare clear building-regulations drawings for your project, whichever route you choose, and we coordinate with a structural engineer where calculations are needed. We can also explain how each route works so the decision feels straightforward.
What we don't do is carry out the building work or act as your building-control body — the application sits with you (or your builder), and inspections are carried out by building control. We focus purely on getting the design and drawings right.
A few details are enough for an honest first view — with no obligation:
Need building regulations drawings? We can prepare them — clear, coordinated and ready for builders and building control.
External links open in a new tab. Always confirm your specific project with the relevant authority.
Send Sean a few photos and a short description of what you'd like to do. You'll get an honest first view with no obligation.