Residential EPCs
Energy Performance Certificates for existing homes, sales and lettings.
ENERGYWISESERVICESGet a quote UK BUILDING ENERGY CONSULTANCY
SAP calculations, EPCs and energy compliance.
Clearly delivered.
SAP calculations, domestic and commercial EPCs, Energy Statements, building compliance and practical decarbonisation support—from first assessment to final certification.
WHAT WE DO
Compliance is the baseline.
Better performance is the goal.
EnergyWise Services helps homeowners, architects, developers and commercial property teams make informed energy decisions. We translate technical requirements into clear actions—whether you need an EPC, a compliant new-build design or a sensible route towards lower-carbon operation.
UK-wideProject support
Domestic + commercialOne technical partner
Design to completionJoined-up compliance
Clear adviceNo unnecessary jargon
FIND THE RIGHT SERVICE
What does your
project need?
Choose the closest project type for a useful starting point. If the scope crosses several services, we can combine them into one coordinated quotation.
01
HOUSE, FLAT OR RESIDENTIAL PROJECT
Domestic compliance
SAP calculations, domestic EPCs, extensions, conversions, overheating, water and fabric assessments.
02OFFICE, SHOP, WAREHOUSE OR OTHER NON-DOMESTIC BUILDING
Commercial compliance
SBEM calculations, commercial EPCs and coordinated non-domestic building-energy support.
03PLANNING APPLICATION OR LOW-CARBON STRATEGY
Planning and decarbonisation
Energy Statements, retrofit feasibility and practical pathways towards lower-carbon operation.
04NOT SURE WHICH SERVICE APPLIES
Describe the project
Tell us the building type, project stage and intended outcome. We will identify the likely scope.
OUR SERVICES
Technical expertise.
Practical answers.
Only the support your project needs, scoped clearly and delivered at the right stage.
01From £59.99
HOMES & RESIDENTIAL
Residential services
SAP assessments
Design-stage and as-built calculations for new homes, conversions and extensions.
Energy statements
Clear planning support, including London Plan energy statements where required.
Overheating assessments
Part O assessments that identify and resolve overheating risk early.
Water calculations
Part G water-efficiency calculations for Building Regulations compliance.
Air permeability & ventilation
Coordinated air-pressure testing, leakage advice and ventilation commissioning.
02From £145
NON-DOMESTIC BUILDINGS
Commercial services
Commercial EPCs
Energy Performance Certificates for offices, retail, industrial and other non-domestic buildings.
SBEM calculations
Building Regulations energy modelling from design through to completion.
Energy statements
Planning-focused energy and sustainability evidence, including London requirements.
Display Energy Certificates
Operational energy certification for qualifying public buildings.
Air tightness & TM44
Air-pressure testing and air-conditioning inspections coordinated with the compliance model.
Fire & acoustic compliance
Fire-safety surveys and sound insulation testing through competent specialist assessors.
CORE COMPLIANCE SERVICES
SAP, EPC and planning support.
Handled from start to finish.
Detailed energy modelling and clear documentation for design teams, developers, contractors, homeowners and commercial property clients throughout the UK.
SAP CALCULATIONS
SAP calculations for new-build homes, conversions and extensions
Design-stage and as-built SAP calculations demonstrate compliance with Part L and establish the energy performance of a dwelling. We model the proposed fabric, heating, ventilation, renewables and thermal bridging, then provide clear advice where specifications need to improve.
- Design-stage SAP assessments
- As-built SAP calculations
- Part L compliance reports
- New-build and conversion support
CONSTRUCTION EPCS
On-construction EPCs for residential and commercial buildings
On-construction Energy Performance Certificates are produced at completion using the final SAP or SBEM model and verified as-built evidence. We coordinate the information needed for certification, including final specifications, air-test results, commissioning details and renewable-energy installations.
- Residential on-construction EPCs
- Commercial new-build EPCs
- As-built evidence review
- SAP and SBEM coordination
ENERGY STATEMENTS
Planning Energy Statements and London Plan Energy Statements
Our Energy Statements explain how a development will reduce energy demand and carbon emissions through efficient design, low-carbon technology and renewable energy. Reports are tailored to the local planning policy, scheme type and evidence required by the planning authority.
- Planning Energy Statements
- London Plan Energy Statements
- Carbon-reduction calculations
- Low-carbon and renewable strategy
TESTING & SITE COMPLIANCE
Measured on site.
Clearly documented.
Completion testing, statutory inspections and practical diagnostic surveys coordinated with the wider energy and Building Regulations process.
01
Air Permeability Testing
Air-pressure testing, leakage diagnosis and certification for domestic and commercial projects.
02Sound Insulation Testing
Airborne and impact testing for new homes, flats, conversions and residential developments.
03Ventilation Commissioning
Measured airflow rates, system balancing and completion-stage commissioning evidence.
04Fire Safety Surveys
Fire risk, fire-door and compartmentation inspections with prioritised remedial schedules.
05TM44 Inspections
Accredited inspections for qualifying commercial air-conditioning systems.
06Thermal Imaging
Infrared surveys identifying heat loss, insulation defects and air-leakage paths.
Accredited and specialist inspections are completed by appropriately qualified EnergyWise Services assessors or approved testing partners, depending on service type and project location.
DECARBONISATION & RETROFIT
Turn carbon targets into an
achievable upgrade path.
EnergyWise Services provides strategic decarbonisation reports and feasibility assessments for existing buildings. We review the building, its operation and available energy information to identify realistic fabric, services, controls and renewable-energy improvements.
Options are assessed for their likely energy, carbon and EPC uplift, helping clients understand what to prioritise, what may be eligible for funding and what should progress to detailed design.
Discuss your buildingDecarbonisation reports
Strategic reports that establish the current position, identify realistic carbon-reduction measures and set out a prioritised route towards organisational or project targets.
Retrofit feasibility assessments
Early-stage appraisal of building fabric, heating, cooling, ventilation, controls and renewable-energy upgrades before detailed design or investment.
Technology option appraisals
Clear comparison of retrofit technologies including heat pumps, low-temperature heating, solar PV, battery storage and improved building controls.
Carbon and EPC uplift modelling
Assessment of how proposed measures could improve energy performance, reduce emissions and support a target EPC rating or carbon-reduction objective.
Solar PV calculations
Desktop assessment of suitable PV capacity, expected generation, roof constraints, self-consumption potential and the likely contribution towards project targets.
Grant and funding support
Technical evidence to support relevant grant or funding applications, with available schemes and eligibility reviewed against the specific building and project.
Scope note: Our feasibility and decarbonisation work provides strategic, evidence-led direction. Detailed M&E design, structural design, grant approval and installer quotations remain separate project stages where required.
COMMON QUESTIONS
Useful answers,
before we begin.
01What information do you need to provide a quote?+
Send the project address, building type, current stage, drawings or floorplans, and any planning or Building Control requirements you have received. If something is missing, we will tell you exactly what is needed.
02Do you work across the UK?+
Yes. EnergyWise Services is based in Belfast and supports residential and commercial projects throughout the UK, with remote delivery available for most calculation and reporting services.
03When should SAP or SBEM calculations begin?+
As early as practical. Early modelling gives the design team more options and helps avoid expensive specification changes close to completion.
04Can you help improve a failing design?+
Yes. We review the model, identify the most effective changes and explain the route to compliance in plain language.
05What are SAP calculations and when are they required?+
SAP calculations assess the predicted energy performance of a dwelling. They are commonly required for new-build homes, conversions and certain extensions to demonstrate Part L compliance, and the final as-built calculation is used to produce an on-construction EPC.
06What is needed for an on-construction EPC?+
The final SAP or SBEM model must reflect the completed building. Typical evidence includes confirmed construction specifications, product details, air-permeability results, heating and ventilation commissioning information, and evidence of installed renewable technologies.
07What does an Energy Statement include?+
An Energy Statement normally describes the proposed energy strategy, applicable planning policy, baseline performance, demand-reduction measures, low-carbon systems, renewable energy and the resulting carbon improvement. The exact content is tailored to the relevant local authority.
08Can you take over an existing SAP or SBEM assessment?+
Usually, yes. Send the existing calculation files, reports, drawings and current specification. We will review what is usable, identify missing information and confirm the quickest route to completion or compliance.
START A PROJECT