Building Regulation Drawings

Nearly all types of building work require approval. Typical examples of works that require approval include:-

  • Building a new home

  • Erection, extension or alteration of a building

  • Change of buildings use

  • Internal structural alterations

  • Loft & garage conversions

  • Forming a structural opening; e.g. new window or through room

  • Installing cavity wall insulation

  • Underpinning a house

  • Installing a WC


A general rule is that if if the work is structural then it probably requires approval. 


What do building regulations cover?

The requirements with which building work should comply are contained in Schedule 1 to the Building Regulations and are grouped under the fourteen 'parts': Part A - Structure, Part B - Fire safety, Part C - Site preparation and resistance to moisture, Part D - Toxic substances, Part E - Resistance to the passage of sound, Part F – Ventilation, Part G – Hygiene, Part H - Drainage and waste disposal Part J - Combustion appliances and fuel storage systems, Part K - Protection from falling, collision and impact Part L - Conservation of fuel and power Part M - Access to and use of buildings, Part N - Glazing - safety in relation to impact, opening and cleaning Part P - Electrical safety.

What is exempt from building regulations?

The extension of a building by the addition at ground level of a conservatory, porch, covered yard or covered way or a carport open on at least two sides. Where the floor area does not exceed 30m², provided that in the case of a conservatory or porch which is wholly or partly glazed, the glazing satisfies the requirement of Building Regulation Part N Safety Glazing. An exempt conservatory must be separated from the remainder of the house by a wall, door or window. A detached single storey building, having a floor area which does not exceed 30m², which contains no sleeping accommodation and is a building at no point of which is less than one metre from the boundary of its curtilage or which is constructed substantially of non-combustible material. These planning exemptions cover: Detached garages having less than 30 square metres in floor area and constructed of non-combustible materials. Detached summer house having less than 30 square metres in floor area and containing no sleeping accommodation and constructed of non-combustible materials. Timber sheds are also exempt providing they are less than 30 square metres in floor area and positioned a minimum of one metre from the boundary of its curtilage.

SAP Calculations

A SAP rating is the calculation that is required in order to produce a Predicted Energy Assessment and an On Construction Energy Performance Certificate. Building Regulations require that a SAP calculation and a Predicted EPC is submitted for new dwellings prior to the commencement of work. A SAP calculation indicates a score from 1 to 100+ for the annual energy cost based on: - The elements of structure - The heating and hot water system - The internal lighting - The renewable technologies used in the home. The higher the score the lower the running costs, with 100 representing zero energy cost. Dwellings with a rating in excess of 100 are net exporters of energy.

Apex CAD can create all of your building regulation drawings for any domestic or commercial project. We keep up to date with the latest regulation requirements and have a vast amount of detail drawings in our library which suit any project, from attic conversions to new builds. We can put together all the plans you require for your application such as: