What is the difference between Sbem and SAP?

The two methods are very similar. The main difference is in how the calculation assumes energy use by the occupants of the building. SAP looks at how we typically heat and light our homes, whereas SBEM uses different sets of default information depending on the specific use of the building.

Why is Sbem important?

It is important to carry out SBEM calculations prior to construction in order to anticipate potential barriers to achieving compliance with Building Regulations.

What is a Sbem?

SBEM stands for Simplified Building Energy Model. It is a software calculator created by BRE which assesses the energy consumption in a non-domestic building (non-residential). It is used to demonstrate compliance with Building Regulations Part L2A New builds or Part L2B Existing buildings.

What is a SAP calculation?

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.

Do I need an Sbem for an extension?

An SBEM would be required if the extension to the existing building exceeds 100m2 and greater than 25% of the total floor area of the existing building.

What is the difference between an Sbem and EPC?

SBEM (Simplified Building Energy Model) and EPC (Energy Performance Certificate) are the approved national calculation methods used to assess and compare the energy performance and environmental impact of new commercial buildings.

What is a Brukl report?

Building Regulations UK Part L (BRUKL) reports are produced for non-domestic buildings to show compliance with Part L2A of the Building Regulations for the conservation of fuel and power. They are used to predict a new building’s energy efficiency.

Which part of the Building Regulations deals with conservation of fuel and power?

Approved Document L2B, Conservation of fuel and power in existing buildings other than dwellings.

How is a property’s overall energy performance rated in an EPC?

An EPC gives a property an energy efficiency rating from A (most efficient) to G (least efficient) and is valid for 10 years. Check how you could make your home more energy efficient using the Energy Savings Trust’s home energy check.

Do I need an EPC or SAP?

You will need a SAP EPC. Any dwelling created after 1st April 2008 must have an EPC certificate produced using full SAP methodology. This includes: New Builds, Conversions and when the number of dwellings within a property has changed i.e. A house changed into 2 flats.

Do I need a SAP calculation for an extension?

The short answer: not. The longer answer: it depends. Not all extensions will need an SAP calculation. As long as any areas of new glazing account for no more than 25% of the new floor area (plus an allowance for existing windows that need to be removed) then you can carry on without an additional calculation.

How much glass can I have in my extension?


The rule is relatively simple: the total amount of all external doors, windows, and roof windows, as a proportion of the internal floor area of the extension, should not be more than 25%. As a result, that total area of all the windows, doors, walls, rooflights, bi-fold or patio doors etc.

What does Brukl stand for?

Building Regulations UK Part L (BRUKL)
A BRUKL report is required to demonstrate that a building is compliant with Part L of UK building regulations. As part of a building project’s planning submission and sign off you will need to submit an As Designed BRUKL compliance certificate.

Do I need a Brukl?

A BRUKL report is required to demonstrate that a building is compliant with Part L of UK building regulations. As part of a building project’s planning submission and sign off you will need to submit an As Designed BRUKL compliance certificate.

What is a Brukl assessment?

A BRUKL report is a Building Regulation UK Part L report. It specifies the energy and fuel conservation effort. Buildings are measured for their emissions and it will assist with the building process. Builders are continually using these reports to ensure that their buildings adhere to the regulations.

What are the changes to the building regulations in 2022?

From 15 June 2022, all new homes must produce 30% less carbon dioxide emissions than current standards. The Building Regulations also include new standards to reduce energy use and carbon emissions during home improvements.

What is Part P of the building regulations?

Part P states that anyone carrying out electrical installation work in a home must make sure that the work is designed and installed to protect people from fire and electric shocks. Part P applies to any changes made to existing installations, including any parts that have been rewired.

Is an EPC a legal requirement?

Do I need an Energy Performance Certificate (EPC)? Yes. It is a legal requirement to have a valid EPC for a property when marketing for sales and/or lettings. There are exemptions for certain property types, and all exemptions have to be registered on the national register.

How is EPC calculated?

An accredited energy assessor will conduct a visual inspection of your property for an EPC for domestic properties. They will take a measured survey, photographs, and calculate the EPC rating by recording lights, windows, heating, and radiators.

What is the difference between an EPC and a sap?

Your SAP calculation is the methodology behind the all important EPC, and is essentially a thorough list of calculations to judge the overall performance of a building. The EPC is the proof of those calculations.

Are SAP and EPC the same thing?

Guidance on how a home’s energy performance is calculated using the Standard Assessment Procedure (SAP) methodology, which underpins the Energy Performance Certificate (EPC).

Are SAP calculations required for conversions?

The rules are slightly different for conversions and SAP calculations are only required if the conversion results in a ‘Material Change of Use’ or a ‘Change of Energy Status’.

Does a glass extension need foundations?

Glass box extensions and additions do not always require foundations, although larger ones will. Glass ‘conversions’ are usually built from an aluminium framework that is bolted to your property as well as secure footings.

Is Sbem and Brukl the same?

Simplified Building Energy Model calculations, also known as SBEM, are made as part of the BRUKL evaluation process. SBEM is the method for calculating the energy performance of non-domestic buildings, estimating the annual carbon emissions that will be produced annually from the building.

What is Brukl report?