Building Regulations Drawings in London | Full Plans
Full-plans construction packages with structural calculations, coordinated in-house.
Where planning drawings gain design consent, building regulations drawings prove your project meets the technical standards for a safe, warm, structurally sound building. DrawingsDirect produces full-plans building control packages for London extensions, lofts and conversions, with structural calculations produced in-house rather than subcontracted.
Fixed fees from £1,400 · Drawings in ~7 days · Free redraws to approval.
What do building regulations drawings cover?
A building control package translates the approved design into a buildable, compliant specification.
- Construction sections and detailed junctions
- Structural drawings and calculations (steel beams, foundations, loadings)
- Part L thermal performance and insulation specification
- Fire safety — escape routes, protected structure, alarms
- Drainage and ventilation layouts
Full Plans or Building Notice — which should I choose?
A Full Plans application has your drawings checked and approved by Building Control before work starts, giving certainty and a document lenders and buyers like to see. A Building Notice lets simpler work start sooner but is inspected as it proceeds, with less up-front certainty. For most London extensions and loft conversions we recommend Full Plans, and prepare the package accordingly.
Why coordinate structural calculations in-house?
When the same team draws the building and calculates its structure, the steel schedule matches the drawings and the builder never waits on a missing detail. It removes the classic gap between an architect's drawings and a separately-appointed engineer's calculations.
What energy and insulation standards apply under Part L?
New extensions and conversions must meet the Part L thermal standards — target U-values for walls, roof, floor and glazing, controlled ventilation, and limits on overall heat loss. For a London period property that often means achieving those figures within tight existing structures. We specify wall, roof and floor build-ups that meet Part L without eating into the space you are gaining, and set them out clearly for Building Control and your builder.
When does my project need structural calculations?
Any project that removes a load-bearing wall, forms a large opening, or adds load — a new loft floor, a rear-extension roof, or a steel beam over bi-fold doors — needs structural calculations to prove the structure is safe. We produce the structural drawings and calculations in-house alongside the building regulations set, so the beam sizes shown on the drawing are the beam sizes in the calculations, with no gap for a builder to query on site.
| Factor | Full Plans | Building Notice |
|---|---|---|
| Drawings checked before work starts | Yes | No |
| Up-front certainty | High — approval in writing | Lower — inspected as built |
| Best for | Extensions, lofts, structural work | Minor, simple works |
| Evidence for lenders and buyers | Full approval record | Completion certificate only |
| Risk of costly on-site rework | Low | Higher if issues are found late |
Building Regulations Drawings in your London borough
Local planning constraints, conservation areas and Article 4 notes for each council.
Complete your drawing package
Existing and proposed plans, elevations and sections, formatted to your borough.Architectural Drawings
The complete technical design service, from first concept to construction detail.House Extension Drawings
Rear, side-return, wraparound, double-storey and basement extensions, drawn to approve.
Building Regulations Drawings — frequently asked questions
Do I need building regulations approval as well as planning permission?+
How long does Building Control approval take?+
Can building regulations drawings be done after planning approval?+
Are structural calculations included?+
Can you submit to Building Control for me?+
Ready for building regulations drawings that get approved?
Tell us your London address and project. We'll confirm feasibility and a fixed fee within one working day — with a free planning appraisal of your property's potential.