About the Resource
Typical Building Regulations Notes For Domestic Extensions, Alterations & Conversions
A comprehensive, editable set of Building Regulations drawing notes, created to save you time and give you a reliable starting point for domestic projects.
The notes are split into two documents, one for Extensions and Alterations which is an 80 page document. The second option is for Extensions, Alterations and Conversions, which is a 137 page document.
The documents are designed for architects, architectural technologists and designers working on UK house extensions, loft conversions, garage conversions and internal alterations. They provide a structured framework of Building Regulations notes that can be tailored to suit individual projects and Building Control requirements.
Supplied as two editable Word documents and two PDFs, the notes can be quickly adapted to suit different schemes, local authority preferences and project-specific constraints.
What's included?
This product includes professionally structured Building Regulations drawing notes, supplied as editable Word documents and written specifically for UK domestic projects.
Two documents:
- Extensions & Alterations – approx. 80 pages
- Extensions, Alterations & Conversions – approx. 137 pages
Both versions are designed to be edited and adapted to suit individual projects and Building Control requirements.
Regulatory context and responsibilities
Clear notes covering the wider statutory framework around domestic projects, including:
- Planning consent and conditions
- Building Regulations approvals and inspections
- Building Safety Act 2022 duties
- CDM Regulations 2015
- Party Wall etc. Act 1996
- Shared drainage and Water Industry Act requirements
Site, client and contractor information
Practical notes to support clarity and risk management on site:
- Client and contractor responsibilities
- Site assessment and investigation
- Demolition and existing structure considerations
- Materials, workmanship and UK standards
- Extreme weather and coastal location guidance
Fabric performance and Part L guidance
Detailed coverage supporting Building Regulations compliance, including:
- Thermal bridging, airtightness and condensation control
- New and retained thermal elements
- U-value tables for extensions, conversions and upgrades
- 25% glazing rule, SAP implications and exemptions
Structure and construction elements
Project-ready notes covering typical domestic construction, including:
- Structural coordination and engineer responsibilities
- Foundations, floors, walls and roofs
- Windows, doors, staircases and guarding
- Drainage, fire safety, services and ventilation
- External works and renewable energy
How you should use the notes
- As a starting point for your own project-specific Building Regulations notes
- Edit and adapt to reflect the drawings, specification and site conditions
- Review and amend to suit the latest Building Regulations and Approved Documents
- Coordinate with your structural engineer’s design and any specialist reports
The documents are intentionally detailed, but are not project-specific and should never be used without review and amendment.
Can it be used for new build?
The documents are set up specifically for extensions, alterations and conversions. However, because it is supplied as an editable Word document, users can adapt them for new-build projects by adding the relevant sections themselves if they wish.
⚠️ Important limitations and disclaimer
These notes documents are intended as base documents only. They are not project-specific and must be edited and amended to suit the drawings, specification and site conditions of each individual project.
By purchasing these documents, users accept that they remain fully responsible for researching, interpreting and complying with the current Building Regulations and all related legislation. The documents do not guarantee Building Control approval and do not remove the need for professional knowledge or experience.
The notes are designed for domestic extensions, alterations and conversions only. They are not suitable for basements, non-domestic work or new-build projects without significant amendment. No updates or ongoing support are provided.
What you’ll receive
- 2 × fully editable Word (.doc) documents
- 2 x PDF documents
- Immediate digital download after purchase
Format and flexibility
- Supplied as fully editable Word (.doc) documents
- Written for domestic extensions, alterations and conversions
- Intended as a starting point, not a fixed specification
Who this is for
- Architects and architectural technologists
- Designers preparing Building Regulations submissions
- Practices looking to standardise their domestic project notes
- Anyone wanting a clear, organised starting point rather than writing notes from scratch
Who this is not for
- Anyone looking for a “plug and play” specification
- Users unfamiliar with the UK Building Regulations
- Projects outside domestic extensions, alterations and conversions
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