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Flexible booking

Fast Turnaround

TrustMark Approved

Professional EPC Assessment & Retrofit Services

A complete range of EPC & Retrofit services for homeowners, landlords & agents

What We Offer

Comprehensive home energy assessment and measurement services for sales, lettings, and compliance across Essex and London.

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EPC Assessor Services

Energy Performance Certificates for sales, lettings and compliance, delivered by an Elmhurst Energy accredited domestic energy assessor.

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Retrofit Services

PAS 2035‑compliant assessments for retrofit coordinators, installers, local authorities and homeowners improving the energy efficiency of domestic properties.

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Landlord Packages

Designed for landlords managing multiple properties. Save time and reduce costs with combined EPC + Retrofit bundles, ideal for compliance and upgrades.

Pricing Overview

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Domestic EPC 

Energy Performance Certificate

£69

From

(£58 for Brentwood and immediate surrounding areas)

  • Full on-site EPC survey

  • RdSAP 10 energy modelling

  • Digital certificate

  • Upload to the national EPC register

  • Photos and supporting evidence

  • Report delivered within 24 hours

Perfect for: Homeowners, landlords, sellers, estate/letting agents.

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PAS 2035

 Retrofit Assessment

£195

From

(£178 for Brentwood and immediate surrounding areas)

  • Occupancy assessment

  • Condition survey

  • Energy assessment

  • Improvement pathways

  • Ventilation assessment

  • Full digital retrofit report

Ideal for: landlords upgrading properties, and homeowners planning energy-efficiency improvements.

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Landlord

EPC + Retrofit Bundle

£248

From

Save money when combining your EPC with a retrofit assessment in a single visit.

  • Full domestic EPC

  • PAS 2035 Compliant retrofit assessment

  • One combined appointment

  • Faster turnaround

  • Discounted multi-property rates

Best for: Landlords, letting agents, and block/portfolio managers.

Who We Work With

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Homeowners

EPCs, retrofit advice, improvement planning

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Retrofit Coordinators

PAS 2035 assessments and reports

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Landlords

Portfolio EPCs, MEES compliance and property data

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ventilation & pre-works surveys

Installers

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Estate Agents

EPCs, floor plans, photography

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SAP calculations, new-build EPCs, data collection

Developers

Why Choose AssessPlus

A trusted, accredited assessment  partner for residential and retrofit projects.​ 

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Fully Accredited & Insured Assessors

We’re accredited with Elmhurst and ECMK, ensuring every assessment meets the highest industry standards.

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Fast Same‑Day Availability

Need an EPC urgently? We offer flexible appointments and rapid assessment report delivery, in London & Essex

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Local Expertise in London & Essex

Covering Essex, we understand local property types, and energy‑efficiency challenges

Clear, Professional Survey Reports

Our reports are easy to understand, with practical recommendations that help you improve efficiency and reduce running costs.

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FAQs about EPCs & Retrofit

How long does an EPC take?

An EPC visit usually takes 30–60 minutes for a typical house or flat, depending on size and complexity.

How long is an EPC valid for?

An EPC is valid for 10 years, unless you make major energy-related improvements and choose to update it sooner.

Do I need an EPC to sell my home?

Yes. In most cases, an EPC is legally required when selling or letting a residential property in the UK.

How quickly can I get my certificate?

In most cases, we upload and send your EPC digitally the same day as your appointment.

What is PAS 2035?

PAS 2035 is the UK standard for managing domestic retrofit projects, ensuring improvements are designed and installed in a safe, effective way.

What does a Retrofit Assessment include?

A Retrofit Assessment typically covers the property survey, occupancy and ventilation assessments, and evidence gathering to support a PAS 2035 retrofit plan.

Who are Retrofit Assessments for?

They’re designed for retrofit coordinators, installers, local authorities and landlords planning energy efficiency upgrades.

What areas do you cover?

We cover Brentwood, Romford, Essex and London, with a focus on local homes and landlords in these areas.

Do you provide floor plans and property data for agents?

Yes. We offer floor plans, LiDAR-based measurement and property data collection tailored for estate and letting agents.

Can you work across a landlord’s whole portfolio?

Yes. We regularly work with landlords and agents on multi-property portfolios, coordinating EPCs, retrofit assessments and floor plans across several addresses.

Ready to book your assessment?

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