Energy assessors for architects, developers and contractors

SAP, SBEM and Overheating Assessments, From Planning to Sign-Off

One team for the whole compliance package: energy calculations, overheating, water, and air, sound and ventilation testing. More than 17 years' experience and more than 8,500 assessments. We work nationwide.
Energy assessor marking up an A to G energy efficiency chart on a screen

Energy Assessments and Compliance Testing

New homes, commercial buildings, testing and surveys. One team from planning to sign-off.
Two engineers inspecting outdoor air conditioning units

TM44 Air Conditioning Inspections

Required every five years for systems over 12 kW. Single sites and national portfolios.

TM44 inspection details
Model of a commercial building under construction with an A to G energy rating scale

Commercial EPCs

For offices, shops, warehouses and every other non-domestic building, when it is sold, let or newly built.

Commercial EPC details
3D model of a wooden house on blueprints with an energy efficiency rating scale beside it.

SAP Calculations and EPCs

Design stage to as-built, for new builds, conversions and extensions under Part L.

SAP calculation details
Sound source and sound level meter on tripods in an empty room

Sound Insulation Testing

Part E airborne and impact tests for new-build and converted flats and houses.

Sound testing details
Collage of blower door machine, digital gauge, and fan used for building energy performance testing.

Air Tightness Testing

Required under Part L for every new home. We test, find the leaks and retest.

Air tightness testing details
Hand using a calculator beside water meters

Part G Water Efficiency

The water calculation building control needs for every new dwelling, from your fittings schedule.

Part G calculation details
Model house with coins, calculator and keys on planning documents

Energy Statements for Planning

Written to the London Plan energy hierarchy and local council policy, with the SAP and SBEM calculations behind it.

Energy statement details
Fire extinguisher mounted on a column inside a building

Fire Risk Assessments

A written assessment with a prioritised action plan, for commercial buildings and blocks of flats.

Fire risk assessment details
Engineer in a hard hat checking ventilation ductwork against drawings

Ventilation Testing

Part F airflow testing for extract fans, MEV and MVHR, with the report building control needs.

Ventilation testing details
Sample of asbestos material beside yellow asbestos warning tape

Asbestos Surveys

Management surveys, and refurbishment and demolition surveys, through accredited asbestos surveyors.

Asbestos survey details
New apartment blocks with landscaped gardens in evening sun

Part O and TM59 Overheating

The simplified method where it works, and a dynamic TM59 model where it does not.

Overheating assessment details
BRUKL report from an SBEM calculation beside a building under construction

SBEM Calculations and BRUKL Reports

Part L compliance for new and refurbished commercial buildings, design stage to as-built.

SBEM calculation details

Why clients use us

One Team, Fast Turnaround, Realistic Advice

Everything under one roof. One contact and one set of drawings for every report planning and building control will ask for.

Fast turnaround. We work evenings and weekends when your deadline needs it.

Technical depth. Led by a mechanical engineer, with more than 17 years of real projects, from single houses to large flat schemes and commercial sites.

The affordable route. We look for the realistic, cost-effective way to comply before you spend money on the wrong specification.
Calculator showing the word energy, resting on banknotes
Stopwatch beside an A to G energy rating chart
Overhead view of three site workers in hard hats reviewing plans

Google reviews

What Our Clients Say

Behdad was very responsive with my requests for SAP calculations, EPC assessments and water efficiency calculations for several of my development projects. I would highly recommend his firm to prospective clients.

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Jeremy Li

Jeremy Li

12 hours ago

Behdad provided a helpful and efficient service at a good price. I would definitely recommend him to others.

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Amanda Cherry

Amanda Cherry

1 day ago

As architects we have used Future by Energy several dozen times to deal with our clients energy specifications and projects. The service has always been fast, effective and pro active.

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Andrew MacSwayed

Andrew MacSwayed

2 days ago

Exceptional Service, prompt and professional. Happy to do continued business with Behdad and colleagues going forward in business.

Read more
Piers Maisey

Piers Maisey

2 days ago

Elmhurst Energy approved energy assessor and Quality Promise accredited member logos

Future BY Energy Ltd. Elmhurst Energy approved energy assessor.

Prices for SAP, SBEM, Part O and Energy Statements

Larger schemes are priced per project. Send the drawings and we will quote.
Site team reviewing construction drawings beside a hard hat
High Demand

Energy Statements for Planning

From £600+VAT

per report

Energy statement details
Covers the London Plan energy hierarchy: Be Lean, Be Clean, Be Green and Be Seen.

SAP and SBEM assessments included

Water efficiency calculation included

Meets London Plan requirements

Turnaround: 5 working days

House outline beside an A to G energy rating chart
Popular

SAP Calculations and EPCs

From £100+VAT

per home

SAP calculation details
Design-stage and as-built SAP for new builds, conversions and extensions.

Part L SAP calculation

EPC on request

U-value calculations

Cost-effective, practical suggestions

Turnaround: 3 working days

Model of a commercial building under construction with an A to G energy rating scale

SBEM and BRUKL Reports

From £400+VAT

per building

SBEM calculation details
Part L calculation, BRUKL report and EPC for commercial buildings.

Part L SBEM calculation

U-value calculations

Commercial EPC on request

Cost-effective, practical suggestions

Turnaround: 3 working days for small buildings

New apartment blocks with landscaped gardens in evening sun
Cheap Alternative

Part O Overheating

From £150+VAT

per home

Part O assessment details
Simplified-method overheating assessment for new homes.

Overheating assessment to Part O

Cost-effective, practical solutions

Turnaround: 5 working days

How It Works: From Drawings to Sign-Off

  1. Send your drawings. Plans, elevations, sections and specification, by email or WhatsApp.
  2. Get a clear quote. The price, what it covers, where extra cost would start, and the turnaround.
  3. Get your reports. We issue them, answer building control's questions, and update the calculations if the design changes.

Rules That Are Changing

  • 24 March 2027. The Future Homes Standard and the new Part L for commercial buildings come into force in England. Projects that submit plans before that date and start on site within 12 months can stay on today's rules.
  • 2031. The government has confirmed that rented commercial buildings over 1,000 m² will need to reach EPC B. This is not yet law.

Not sure which rules apply to your project? Send us the dates and we will tell you.

Who We Work With

Architects and designers. Developers and house builders. Main contractors. Landlords, managing agents and facilities managers.

All Our Services

New homes. SAP calculations and EPCs, Part O and TM59 overheating assessments, Part G water calculations, and energy statements for planning.

Commercial buildings. SBEM calculations and BRUKL reports, commercial EPCs, EPC B upgrade plans, TM44 air conditioning inspections and Display Energy Certificates.

Testing and surveys. Air tightness, sound insulation and ventilation testing, fire risk assessments and asbestos surveys.

Send Us Your Drawings

We will come back with a quote and a turnaround time. Email [email protected] or message us on WhatsApp.

About Future BY Energy
Site team reviewing construction drawings beside a hard hat