Trusted SAP Ratings

for Building Projects

Professional compliance documentation that keeps your projects moving forward

Remove the regulatory hurdles that slow down your building projects. Our streamlined SAP rating service provides the compliance documentation you need, when you need it, allowing you to focus on delivering excellence.

Why Building Professionals Trust Our SAP Rating Service

We understand the pressures of delivering compliant, energy-efficient buildings under tight deadlines. Our service transforms a potentially complex regulatory requirement into a simple, efficient process so you can focus on what matters most. Creating exceptional buildings that satisfy both aesthetic vision and regulatory standards.

How We Streamline Your SAP Compliance Journey

Our comprehensive SAP rating service utilises Building Research Establishment (BRE) approved software to deliver fully submittable certificates for building control. We specialise in Part L1A & L1B compliance through carbon dioxide emission rate calculations (TER vs DER), ensuring your projects meet all regulatory requirements.

Should your initial assessment fall short of compliance targets, we don't just deliver the news. We provide tailored recommendations and outline specifications to help you achieve compliance without extensive revisions. Our expertise becomes your resource for creating buildings that meet both regulatory standards and your project goals.

Secure Your SAP Rating

Transparent Pricing with No Hidden Fees

We believe in clear, straightforward pricing that allows you to budget with confidence

The all-inclusive one-off cost for providing a full SAP Rating certificate is £50.00 for properties up to 100 sqm followed by an additional fee of £1 per sqm thereafter up to a maximum of £125.00.

No surprise charges. No hidden costs. Just professional compliance documentation at competitive rates.

Need express service? Contact us for expedited options.

Why SAP Ratings Matter for Your Building Projects

Using our SAP rating service delivers tangible benefits beyond mere regulatory compliance

Save Valuable Time: Our efficient 7-day turnaround means no more project delays waiting for compliance documentation.

Avoid Costly Revisions: Early assessment identifies potential compliance issues before they become expensive problems.

Expert Guidance When Needed: Receive practical recommendations to achieve compliance without compromising your project vision.

Peace of Mind: Our BRE-approved methods ensure building control acceptance, eliminating the risk of rejected submissions.

Predictable Costs: Clear, transparent pricing based on property size means no surprise fees or hidden charges.

What is a SAP rating?

The Standard Assessment Procedure (SAP), is used by the government to determine the energy efficiency of a dwelling. Ratings range from 1 to 100 and the higher the SAP score, the more energy efficient the property.

SAP ratings are based on the energy costs for space and water heating. They establish a means for both the home owner and purchaser to understand the running costs and environmental impact of the property. In our current climate these constitute strong selling and markeing points for all homes. The SAP rating is a legal requirement enforced by the government through building control to be applied to all new dwellings.

The assessment method SAP also establishes the domestic route of compliancy for the Approved Document Part L, the Conservation of Fuel and Power. It is an integral part of the government’s latest white paper to reduce carbon dioxide emissions in line with the Kyoto Agreement.

To be comparable for all properties, the SAP rating is adjusted to floor area, so that it is essentially independent of dwelling size. It takes into account the following range of factors, which contribute to energy consumption:

Thermal insulation of the building fabric
Efficiency and control of the heating system
Ventilation characteristics of the dwelling
Solar gain characteristics of the dwelling
The fuel used for space and water heating

For suggestions aimed at developers to improve the SAP rating of a dwelling, please refer to our tips and advice section.

Common Questions About SAP Ratings

What exactly is a SAP rating?

The Standard Assessment Procedure (SAP) is the UK Government's methodology for calculating the energy performance of dwellings. A SAP rating is required for all new dwellings to demonstrate compliance with Part L building regulations.

How long does the process take?

Standard turnaround is seven working days from receipt of complete information. Need it faster? Contact us for expedited service options.

What information do I need to provide?

You'll need to submit dwelling drawings and complete our SAP data form. Our online process guides you through exactly what's required.

What if my building doesn't meet compliance standards?

We don't just deliver bad news. If your initial assessment falls short, we provide practical recommendations to achieve compliance without extensive revisions.

Is your assessment recognised by building control?

Absolutely. All our SAP ratings utilise Building Research Establishment (BRE) approved software and are fully submittable to building control authorities throughout the UK.

Tips on improving your SAP Rating

There are several ways to improve your SAP rating for any dwelling. We’ve separated these improvements into categories of ease of implementation:

Easy

Improve cylinder insulation thickness to 100mm
Utlilise the maximum boiler efficiency available
Utilise programmable thermostats

Medium

Increase roof insulation
Improve window insulation
Utilise load and weather compensators

Hard

Increase external wall insulation
Maximise south facing glazing

Part L1A Building Regulations

SAP calculations also form the compliancy route for domestic properties through Part L the Conservation of Fuel & Power Building regulation.

Calculating the Target Emission Rate (TER) and Dwelling Emission Rate (DER) for a dwelling involves the full utilisation of the SAP calculation method.

Clearly the SAP calculation and Part L compliancy involves several key areas in building design. As such it is critical for the architect, developer or surveyor to undertake the compliancy assessment at very early design stage to understand the requirements from day 1.

From early design drawings we can provide the SAP rating for the dwelling and also assess the compliancy with regards to PartL1A or L1B of the building regulations. This will avoid architects wasting hours developing working drawings to then find they have to change them to comply with PartL.

From this early assessment we will provide an outline specification of the building services and construction detail required (U-values, boiler efficiency, controls etc) to achieve compliancy.

The outline specification will not only enable you to show Part L compliancy to building control and confirm the architects working drawing detail, but also easily instruct the contractors on site with the Part L requirements.

Testimonials

We, at Redrow Homes, have been using Watt for the past few years.

They have always delivered promptly; meeting our sometimes demanding timescales without failure.

Anthony Smith, Senior Projects
Co-Ordinator at Redrow Homes Ltd

We have been working with Watt for several years now and their involvement in our business has grown steadily due to the fact that they consistently continue to provide excellent, cost effective advice and have an ability to articulate complicated aspects of mechanical and electrical design implications to their client in such a way as it is understandable and as such effective decisions can be taken.

They have assisted us with design advice, performance specifications, EPCs and more recently targetting Net Zero Carbon and the evolving green agenda. Most importantly from my perspective, they are a very personable set of people who can integrate well into design teams and deliver first class advice.

Tom Fenton, Project Director
Far East Consortium International Limited

I have worked with Watt Energy & Consulting for over three years and found them to be very responsive.

We are constantly under pressure to deliver on SAP, Part L assessments, and Energy reports and with Watts’ close support on numerous occasions, have been impressed with their continued high level of performance and keeping to deadlines.