Building Regulations drawings are detailed construction drawings used by Building Control and your builder to ensure your extension, loft conversion or renovation complies with UK Building Regulations. At Draw & Plan, we prepare comprehensive Building Regulations drawings, construction details and written specifications for homeowners across London, helping projects progress smoothly from planning approval through to construction.
Our Building Regulations plans—also known as building regs drawings or Building Control drawings—are available across England and all London boroughs. Fixed fees start from £950 + VAT.
Technical design information
Building Regulations drawings are detailed technical documents that show how a project will comply with the regulations. They cover construction details, materials, safety and performance standards, and are usually read alongside written specifications and any required structural calculations. A Measured Building Survey provides the accurate existing plans used as the starting point, while our architectural design service develops and coordinates the technical package.
Different purposes
Planning Drawings show what a project will look like. Building Regulations drawings explain how it will be constructed safely and to the required performance standards.
Technical drawing package
A complete, fixed-fee technical package prepared for Building Control review and use during construction.
Unlike many online drawing services, our Building Regulations drawings are prepared to help both Building Control and your builder, with clear construction details, written specifications and coordination with structural engineers where required.
Fixed-fee service
Our Building Regulations drawing service starts from £950 + VAT. The fixed fee is confirmed before work begins; see Services & Prices for our wider service packages.
Structural design packages from our affiliated structural engineer start at £395 (no VAT) for a simple extension.
When they're required
They are commonly required for new buildings, extensions, loft conversions, structural alterations, conversions and changes of use.
Residential projects
For house extensions, our Extension Drawings establish the proposed design, while this technical package brings together floor plans, elevations, cross-sections, drainage information, construction details and written specifications for Building Control review.
Our Loft Conversion Drawings set out the proposed layout and the construction information relevant to structure, fire safety, stairs, insulation and ventilation. Structural calculations may also be required.
Structural design
Structural calculations demonstrate that elements such as beams, columns, foundations and floor structures are designed to carry the required loads safely. They are commonly needed where walls are removed, new openings are formed or the project introduces new structural supports.
These calculations are provided separately by our affiliated structural engineer. We coordinate the engineer's information with our Building Regulations drawings so the plans, construction details and structural design form a clear package for Building Control and your builder.
Our affiliated structural engineer charges:
No VAT is added.
Routes to approval
Applications can be handled by Local Authority Building Control or a private Building Control provider, a service homeowners may also search for as an Approved Inspector. The right route depends on the project; read our guide to Building Notice vs Full Plans.
Option 1
Submit complete drawings before work starts. They are reviewed and a formal decision is issued, giving greater certainty before construction.
Option 2
A faster route for simpler domestic projects. Compliance is assessed through site inspections, with no pre-approval of the plans and greater risk if work does not comply.
Key Approved Documents
Building Regulations drawing samples
Plans, sections, elevations, construction details and written specifications from a new dwelling project. Select any drawing to view the full sheet, or browse our wider Drawing Samples collection.
Building Regulations guides
Explore the application routes, when technical drawings are needed and the risks of starting construction before approval.
When drawings are required for an extension and why they matter during construction.
Compare the two Building Control routes before deciding how to submit your project.
Understand what can happen if work begins before formal approval is granted.
Helpful answers
Building Regulations drawings are detailed construction drawings used by Building Control and your builder. They show how the proposed work is intended to meet the relevant technical requirements, supported by construction details and a written specification.
Usually, yes. Planning permission considers the principle and appearance of the development, while Building Regulations deal with how it is constructed, including structure, fire safety, insulation, ventilation and drainage.
You may still need them. Planning permission and Building Regulations are separate. Even when work falls within Permitted Development, the construction must still comply with Building Regulations.
Planning drawings are not normally detailed enough for construction. Building Regulations plans add construction sections, material build-ups, technical notes, drainage information and other details needed by your builder and Building Control.
Yes. Our package is prepared to support construction and includes plans, sections, construction details and a written specification. Where required, it should be read alongside the structural engineer’s calculations and Building Control instructions.
A Full Plans application submits the complete drawing set for review before work starts and provides a formal decision. A Building Notice is a faster route for simpler domestic projects, with compliance assessed through site inspections rather than pre-approval of the plans.
The review period depends on the application route, the Building Control provider and whether amendments or further information are requested. A Full Plans application is reviewed before a formal decision is issued; a Building Notice does not provide advance approval of the plans.
Building Regulations drawings are typically issued within seven days of instruction. Timing can vary with the project’s complexity and the availability of structural or other specialist information.
Structural calculations are a separate specialist service provided by our affiliated structural engineer and coordinated with our drawings. Prices start from £225 for a load-bearing wall removal, £395 for a single-storey extension, £495 for a two-storey extension and £595 for a loft conversion, with no VAT added.
Yes. Building Control submission support is available as part of our Building Regulations drawings service.
Building Regulations drawings start from £950 + VAT. The fixed fee is confirmed before work begins.
Ready to begin?
Clear, fixed fees from an established drawing practice serving homeowners since 2014 and rated 4.9 on Google. Tell us about your project through our Contact page.