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Building Regulations Notes for Plans - A Step Beyond Guidance
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House Extension Specifications for Construction Plans
House Extension Specifications for Construction Plans in Wales in Wales
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Garage Conversion Specifications for Construction Plans in Wales
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New Build Specifications for Construction Plans in Wales
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Solid Ground Floor Detail Drawing
Floor Detail
Beyond Building Regulations Guidance. Construction Specifications for House Extensions, New Builds, Flat Conversions, Loft Conversions, Garage Conversions and Garage Builds.
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QuickSpec Building Regs App

Start Here Try the Extensions Building Regs Specification App.
Register here to use the Fully Functional Extension, New Build, Flat, Loft, Garage Conversion & Garage Build Apps.

Try a video tutorialBuilding Regulations Note Tutorial

Why not purchase some of our detail drawings? At £2.49 each. Or get access to our library of Detail Drawings and Building Regs Specs with our Premium Registration.

For guidance see:

For further guidance:

Building Regs 4 Plans - Beyond Guidance
Just a few clicks to a full Building Regs Spec!
Premium Registration provides access to 540 Detail Drawings Most Details linked to our Building Regs Specifications
Just click to Download Details Drawings
Click to Add Building Regs Specifications

Why reinvent the wheel each time you produce a Building Regs Specification? Our Web Apps save Architects, Designers and Surveyors hours! The Standard Specification Package gives access to our Building Regs Specs with Web Apps to compile your own Specifications. Try an App Here

The Premium Package give access to our specs and hundreds of Detail Drawings linked to our Building Regs Specifications.

Wales Building Regs Changes: New Web Apps & Drawings Soon!
Note: We provide specs & drawings for both the English & Welsh Building Regs.

QuickSpec - Android Mobile App for Building Regs Specs
News and Updates

With even experienced architects struggling with Building Regulations Approved Documents & guidance to compile Construction Specs for plans to comply to Building Regulations, our Web Apps use concise notes for home extensions, loft, flat & garage conversions & garage builds, compiled by Building Regs experts, for you to prepare plans for Local Authority Building Control / Approved Inspector with ease.

Beyond Building Regulations Guidance - Extensions, Loft & Garage Conversions
A Selection of Detail Drawings by Categories. This is just a Small Sample from our Drawing Library.

Construction Detail Drawings are available in DWG (AutoCAD), DXF and JPEG formats.

New Detail Drawings

New Detail Drawings available for purchase here.

Drawings now include DXF Format

Detail Drawing purchases include DXF format.

Detail Drawing

Drawing Compatibility

Check compatibility with your system here, with our sample detail drawings.

For many of our Building Notes there is a Construction Detail Drawing that can be purchased for a moderate fee for use in your architectural house extension, loft or garage conversion plans.

Timber Frame Tile Hung Wall

Timber Frame Tile Hung Wall

To purchase construction detail drawings for your plans, go to the relevant specification in the App (House Extension, Loft Conversion or Garage Conversion Sections) & Add drawing(s) To Your Basket.

Registration Page

Go Pro with Access to All Detail Drawings!

Why not register for a BuildingRegs4Plans Premium account with immediate access to the detail drawings?

The beauty of this system is that when you add one of our Building Regs notes to your specification you can download the corresponding drawing straightaway!

For a small selection of common detail drawings, see:

Solution Graphics

3D Detail Supporting Info

3d Images

To compliment our 'Interactive 3D Detail', we've added supporting info and 3d images.

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See here for info on complying with the April 2014 changes to Part L of the Building Regulations Approved Documents, (Part L1a Domestic).

For domestic builds, Building Regulations changes on 6th April 2014 affect Approved Document L1a & require new build homes to achieve a 6% carbon improvement on 2010... more info...

Construction Detail Drawings - Extension / Loft Conversion
News !!

Wales Building Regs Changes to Part L due 31st July 2014

A new set of Web Apps & Detail Drawings to be launched for changes to the Wales Building Regulations Part L at end of July. More info here!
Note: We provide Specs for both England & Wales Building Regs

Building Regulations April 2014 Changes

We've updated our specs & drawings to be inline with the Part L Building Regulations April 2014 changes, affecting Part L1a. More info here!

Syspec Ltd

BuildingRegs4Plans is now operating under the company name of Syspec Ltd.

Load - Save - Export to PDF

Load/Save - Specifications

New load/save function to work on your specs at a later time.

Export to PDF

PDF Export

New PDF Export to save your spec as neatly-formatted PDF.

Android Building Regs App, QuickSpec

Android App Launch

We've just launched our first Android App, QuickSpec. View and compile Building Regs Specs on-the-go.

Flat Conversion and New Build Apps

Flat Conversion App New Build App

Flat Conversion & New Build Apps are now live. Checkout Flat Conversion Info & New Build Info.

Interactive 3d Detail

Timber Frame Detail

Timber Frame Wall Interactive 3d Detail is live. View 'Interactive 3D Details'.

Registration Page

Premium Account

BuildingRegs4Plans "Premium" account provides access to our detail drawings & commercial use of our BuildingRegs4Plans Specs. Info here.

Registration Page

Standard Account

The "Standard" account (£50 p.a.) provides professionals with commercial use of our BuildingRegs4Plans App for Construction Plans. More info here.

BuildingRegs4Plans review in ABE Journal

BuildingRegs4Plans review was published in the October 2011 Edition of Association of Building Engineers Journal 'Building Engineer'.

Building Regs App Screenshot

Building Regs Specs inline with Trada Tables

Loft Conversion and House Extension Building Regulations Specifications have been updated to be inline with latest Trada Tables.

October 2010 UK Building Regs Revisions

Our Construction Notes take into account the October 2010 Revisions to UK Building Regulations (England & Wales) & Approved Documents, for up-to-date specifications.

Building Regulations Revisions October 2010
House Extensions Guidance

When compiling Building Regulations Notes for House Extensions, bear in mind that Building Control or your Approved Inspector will want to see a comprehensive list of Building Specifications including floor type (eg solid floor), roof construction, wall type and construction, and foundation type.

The House Extensions Specifications should include notes covering aspects of Fire Safety such as smoke detection, and Escape Windows from First Floor Rooms, where applicable.

Structural Calculations and Details should also be included as part of the Building Control / Approved Inspector Submission.

Work through the categories on the left side of our House Extensions App to make sure you have included necessary specifications.

You should always check with your Building Control Officer or Approved Inspector for guidance regarding any additional details that may be required.

Loft Conversions Guidance

As well as notes for standard construction details, Loft Conversions Specifications should include notes for:

  • Provisions for Means of Escape in Case of Fire
  • Dormer Walls and Roofs
  • Upgrading of existing external walls, party walls and roofs
  • Dwarf / Ashlar Walls
  • Stairs
  • Upgrading of internal floors for fire resistance

Work through the categories on the left side of our Loft Conversions App to make sure you have included necessary specifications.

Structural Calculations and Details should also be included as part of the Building Control / Approved Inspector Submission.

Check with your Building Control Officer or Approved Inspector for guidance regarding additional details that may be required.

Garage Conversions Guidance

In addition to the Building Regulations notes for the standard construction details, Garage Conversions Specifications should include notes for:

  • New Infill External Walls
  • Upgrading existing external walls
  • Upgrade party walls and roofs, if required
  • Upgrading of existing floors including thermal and damp upgrade

Work through the categories on the left-hand panel of our Garage Conversions App to make sure you have included necessary building specifications.

You should always check with your Local Authority Building Control Officer or Approved Inspector for guidance regarding any additional details that may be required.

Building Regulations advice and guidance
Building Plans with Specification

Specifications for Home Extension, New Build, Flat Conversion, Loft & Garage Conversion and Garage Build Plans

The Construction Notes & Specifications form an essential component of a Building Regulations plans submission for Building Control or for an Approved Inspector.

Building Regulations Guidance Notes and Approved Documents are an aid to compiling Construction Notes for drawings but preparing a clear and concise specification for an Application can prove to be an arduous task.

This is where our innovative and easy-to-use App for producing Building Regulations Specifications for Home Extension, Loft and Garage Conversion Plans comes into its own, offering more than standard construction guidance.

Here's a screenshot of the Building Regulations Specification App (for house extensions):

Building Regulations for Extensions Screenshot

Our categorised pre-prepared Building Regulations Construction Notes can be added within the App with a few clicks of the mouse into a specification that is custom-designed to meet the requirements of your Building Project.

Many of our construction notes are very specific, so please select the correct one for your situation (ie correct dimensions, type of insulation) and type of plans (ie house extensions, loft, flat, garage conversions or garage builds), eg

SOLID FLOOR INSULATION OVER SLAB To meet min U value required of 0.22 W/m²K Solid ground floor to consist of 150mm consolidated well rammed hardcore. Blinded with 50mm sand blinding. Provide 100mm ST2 or Gen1 reinforced concrete ground bearing slab under a 1200mm gauge polythene dpm or 3 coats RIW. Dpm to be lapped in with dpc in walls. Floor to be insulated over slab and dpm with min 75m thick Celotex GA4000, 25mm Celotex insulation to continue around floor perimeters to avoid thermal bridging. A vcl should be laid over the Celotex insulation boards and turned up 100mm at room perimeters behind the skirting, all joints to be lapped 150mm and sealed. Finish with 65mm sand/cement finishing screed with light mesh reinforcement. Where drain runs pass under new floor provide A142 mesh 1.0m wide and min 50mm concrete cover over length of drain. Where existing suspended timber floor air bricks are covered by new extension, ensure cross ventilation is maintained by connecting to 100mm dia upvc pipes with 100mm concrete cover laid under the extension. Pipes to terminate at new 65mm x 215mm air bricks with cavity tray over.

However, the site makes it easy to choose your specification.

The note above would be found by navigating through the App in the House Extensions section::

Ground Floors Solid Floor Insulation Over Slab Screed Finish 75mm Celotex

Concise Notes like these shown above, can be added to your house extension specification with just a few clicks in our app! (You can also add the associated construction detail drawing to your basket.)

Another example (from House Extensions):

WARM PITCHED ROOF UNVENTED Pitch 22-45° (imposed load max 0.75 kN/m² - dead load max 0.75 kN/m²)To achieve min U-value required of 0.18 W/m²K Roofing tiles to match existing fixed to tile battens secured over breathable sarking felt to BS747 or relevant BBA Certificate allowing the breather felt to sag at least 10mm over preservative treated counter battens (min 38mm x 50mm). Provide 110mm Celotex FR4000 insulation boards installed under the counter battens and over 47 x 100mm timber rafters (strength class C24 at 400 c/c – to give a max 2.58m span). A vapour control layer should be provided to the underside of the rafters. Finish with 12.5 plasterboard and skim. Restraint strapping - Ceiling joists tied to rafters (if raised collar roof consult structural engineer) and 100mm x 50mm wall plate strapped down to walls across at least 3 timbers using 1000 x 30 x 5mm galvanized straps or other approved to BSEN 845-1 and appropriate noggins at 1.2m centres built into cavity in accordance with CP111 Part 2. Gable walls to be strapped to rafters using galvanized steel built into cavity strapping at 2m ctrs and fixed over 3 rafters with noggins.

Other Building Regulations Construction Notes in our app are supplied with just a single version such as (from House Extension, Loft and Garage Conversions):

ELECTRICAL All electrical work required to meet the requirements of Part P (electrical safety) must be designed, installed, inspected and tested by a competent person registered under a competent person self certification scheme such as BRE certification Ltd, BSI, NICEIC Certification Services or Zurich Ltd. An appropriate BS7671 Electrical Installation Certificate is to be issued for the work by a person competent to do so. A copy of a certificate will be given to the Council.

And (from House Extensions)

LEAD WORK AND FLASHINGS All lead flashings, any valleys or soakers to be Code 5 lead and laid according to Lead Development Association. Flashings to be provided to all jambs and below window openings with welded upstands. Joints to be lapped min 150mm and lead to be dressed 200mm under tiles, etc. All work to be undertaken in accordance with the Lead Development Association recommendations.

The note above can be found at:

Roofs Lead Work

To tryout our Building Regulations Specification App, you can begin straightaway by clicking one of the main category buttons above, House Extensions, Loft Conversions, Flat Conversions, Garage Conversions, New Build or Garage Build. To access the Loft Conversion, Garage Conversion, Flat Conversion, New Build or Garage Build Specifications you'll need to register for an account. But you can see our House Extension specifications on the app (although the 'copy' function has been disabled for non-registered users.)

If you want some help and guidance before getting started please look at our Quick Start Guide or watch the 3-minute Quick Start Video. There are also information pages that should read for New Builds and Flat Conversions as well as an FAQ page.

Construction Detail Drawing Warm Pitched Roof

We believe that Buiding Regs 4 Plans can take the hard work out of manually creating a Construction specification from Building Regulations Guidance Notes and the Approved Documents.

Lastly, we hope that you enjoy using our website and app!

BuildingRegs4Plans.

Building Regulations Submission / Application -Home Extensions - Loft, Flat & Garage Conversions - Help, Advice & Guidance
Construction Detail Drawings - Quick Links

Construction Detail Drawings

As well as the drawings shown with the relevant Building Regulations Specifications, we have a section of quick links where you can easily access a range of common drawings taken from Home Extensions, Loft and Garage Conversions for use on your Building Regulations Plans for submission to Building Control or Approved Inspectors.

Trench Foundation Detail

Strip Foundation Detail

Raft Foundation Detail

Solid Ground Floor Detail, Insulation Over Slab Screed Finish

Solid Ground Floor Detail, Insulation Over Slab Board Finish

Solid Ground Floor Detail, Insulation Under Slab, Screed Finish

Solid Gound Floor Detail, Insulation Under Slab, Board Finish

Timber Suspended Floor Detail, Celotex Insulation

Timber Suspended Floor Detail, Rockwool Insulation

Block and Beam Floor Detail, Screed Finish

Block and Beam Floor Detail, Board Finish

Rendered Cavity Wall Detail, Partial-Fill Insulation

Rendered Cavity Wall Detail, Full-Fill Insulation

Brick Cavity Wall Detail, Full-Fill Insulation

Brick Cavity Wall Detail, Partial-Fill Insulation

Timber Frame Wall Detail, Brick Cladding

Timber Frame Wall Detail, Render Finish

Timber Frame Wall Detail, Tile Cladding

Cold Flat Roof Detail, Felt Covering

Cold Flat Roof Detail, Single-Ply Membrane

Warm Flat Roof Detail, Felt Covering

Warm Flat Roof Detail, Single-Ply Membrane

Pitched Roof Detail, Ceiling-Level Insulation

Vented Pitched Roof Detail, Rafter-Level Insulation

Unvented Pitched Roof Detail, Rafter-Level Insulation (Battens)

Unvented Pitched Roof Detail, Rafter-Level Insulation (Felt-Draped)

Warm Pitched Roof Detail

Brick Cavity Wall Detail, Partial-Fill Insulation

Timber Frame Wall Detail, Tile Cladding

Warm Flat Roof Detail

Eaves Detail

Ridge Detail

Wall To Floor Detail

Cold Flat Roof Showing Firrings

Warm Flat Roof Showing Firrings

Upgrade of Solid Floor

Upgrade of Solid Floor (battens)

Step For Trench Foundation

Step For Strip Foundation

Upgrade of Solid Floor (screed finish)

Upgrade of Separating Timber Floor (independent ceiling)

Upgrade of Separating Timber Floor (platform floor)

Upgrade of Timber Suspended Floor

Ashlar/Dwarf Wall

Full Fill Cavity Wall

Blockwork Party Cavity Wall

Upgrade of Party Cavity Wall (cold adjoining space-battens)

Upgrade of Party Cavity Wall (cold adjoining space-dot and dab)

Upgrade of Party Solid Wall (cold adjoining space-battens)

Upgrade of Party Solid Wall (cold adjoining space-dot and dab)

Upgrade of Party Single Skin Wall cold adjoining space-(battens)

Upgrade of Party Single Skin Wall (warm adjoining space)

Upgrade of Party Solid Wall (warm adjoining space)

Upgrade of Party Cavity Wall (warm adjoining space)

Solid Masonry Separating Wall with Independent Panels

Solid Masonry Separating Wall with Steel frame Panels

Timber framed Separating Wall

Timber Framed Wall with Brick Cladding (150x50mm studs)

Timber Framed Wall with Render Finish (150x50mm studs)

Timber Framed Wall with Tile Hanging (150x50mm studs)

Upgrade Cavity Wall (dry lining-battens)

Upgrade Cavity Wall (dry lining-dot and dab)

Upgrade External Single Skin Wall (dry lining-battens)

Upgrade External Single Skin Wall (dry lining-dot and dab)

Upgrade External Single Skin Wall (block inner leaf)

Upgrade External Single Skin Wall (stud inner leaf)

Upgrade Party Single Skin Wall (block inner leaf

Upgrade Timber Framed Wall

Upgrade Solid Brick Wall (battens)

Cold Flat Roof (single ply membrane)

Cold Flat Roof (Built-up felt)

Eaves Detail (loft 1)

Eaves Detail (loft 2)

Pitched Roof with Insulation at Ceiling Level

Upgrade of Cold Pitched Roof

Upgrade of Pitched Roof with Insulation at Ceiling Level

Upgrade of Vented Pitched Roof with Insulation at Rafter Level

Warm Flat Roof (single ply membrane)

Warm Pitched Roof Insulation Between and Over Rafters

Warm Pitched Roof Insulation Over Rafters-Rafters not Exposed

Warm Pitched Roof Insulation Over Rafters-Rafters Exposed

Valley Detail

Welted Drip to External Gutter

Mansard Roof Edge

Parapet Wall Pitched Roof Box Gutter

Parapet Wall

Pitched Roof Box Gutter

Verge Detail

Pitched Roof / Wall Abutment

Pitched Roof Flat Roof Abutment

Hearth Detail

Accessible Toilet (dwelling)

Joist Built into Wall

Joist Hanger Masonry (restraint)

Joist Hanger Masonry (standard)

Joist Hanger Masonry (straddle)

Joist Hanger on Steel

Joist Hanger Timber (standard)

Joist Hanger Timber (straddle)

Loft Stairs Restricted Headroom

Stairs Detail

Window Lintel

Window Sill

Threshold Detail

Window Frame

Drainage Pipe Through Wall (lintel)

Drainage Pipe Through Wall (rocker joints)

Cover for Flexible Drainage Pipes

Cover for Rigid Drainage Pipes

Cover for Shallow Drainage Pipes

Junction of Timber Framed Wall and Timber Suspended Floor 1

Junction of Timber Framed Wall and Timber Suspended Floor 2

Timber Frame Wall with Timber Cladding

Timber Frame Wall with Timber Cladding 2

Eaves Detail for Timber Frame (Clipped Eaves)

Eaves Detail for Timber Frame (Projecting - Box Eaves)

Internal Loadbearing Wall

Lintel and Cavity Tray

Lintel with Slope within the Cavity

Floor/Ext Wall Constr Timber Frame (Joints Rt Angles to Wall)

Floor/Ext Wall Junction Timber Frame (Joints Parallel to Wall)

Garage Floor

External Insulation Rendered Cavity Wall

External Insulation Rendered Solid Brick Wall

External Insulation Rendered Solid Block Wall

Internal Loadbearing Wall 2

Internal Wall Flooor Junction

Loft Ridge Dormer Detail

Loft Ridge Dormer Detail 2

Loft Floor

Pile Detail

Pile - Timber Frame Detail

Solid Floor- Timber Frame Wall Junction

Timber Frame Wall - Solid Floor - Strip Foundation

Sanitary Pipework

Backdrop Manhole

Backdrop Manhole 2

Brick Backdrop Manhole

Brick Manhole

Pcc Ring Manhole

Soakaway

Cavity Tray Over Sleeved Duct

Pipe Through Wall Sleeved

Sound Insulation Around Pipe

Rooflights

Rooflights Section

Loft Conversion Structure

Roof Framing 1

Roof Framing 2

Flat Roof Wall Abutment 1

Flat Roof Wall Abutment 2

Flat Roof Wall Abutment 3

Flat Roof Wall Abutment

Trusses

Fire Protection For Steel

Mono-Pitched Roof

Foundation Joint

Foundation Joint 1

Trench Foundation Clay Board

Foundation Near Drain 1

Foundation Near Drain 2

Block Retaining Wall

Retaining Wall Part A

Loft Conversion Structure

Rainpipe Through Flat Roof

Service Penetration

Window Lintel Timber Frame

Also checkout the 'New Details' page for Mansard Roof Edge Detail, Box Gutter Detail, Parapet Wall Detail, Verge Detail, Threshold Detail, Window Frame, Window Sill and Window Lintel Details.

A Step beyond Building Regulations Guidance for Home Extensions, Loft, Flat & Garage Conversion & Garage Build Specifications
Advice & Guidance
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Flat Conversion
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Foundation Detail
Foundation Detail
Notes updated to be inline with Building Regulations April 2014 Changes
Part L1a
New Build
Flat Conversion
Garage Conversion
Loft Conversion
Garage Build Notes Added
A Step beyond Building Regulations Guidance for Building Control Plans in England and Wales
Specifications for House Extension, New Build, Flat Conversion, Loft / Garage Conversion and Garage Build Plans for Building Control - Construction Notes & Guidance
Building Regulations Specifications for Submission to Approved Inspectors
For info on the April 2014 Building Regulations changes to Part L1a click here
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