Retrofit energy assessments

We offer our services to Retrofit Coordinators as qualified and Elmhurst accredited Retrofit Assessors. We have several years experience working as Domestic Energy Assessors to support our work in this.

Working under the PAS2035 framework we carry out high quality and accurate surveys and produce reports to the high standards expected of Domestic Retrofit Assessors.

Based in Great Dunmow in Essex we cover the Essex, Cambridge, Hertfordshire and Outer London areas. We can get to site at relatively short notice, offer a detailed survey (including energy assessment, condition sand occupancy reports) and can lodge completed reports within 24 hours of survey completion.

Our friendly and professional approach combined with a few years successful experience as domestic energy assessors allows us to deliver a smooth, comprehensive and accurate survey.

Once you have contacted us to book the survey we will contact the homeowner prior to a visit initially to ascertain the following information:

  • Approximate age of the property.
  • Number and age of extensions and any supporting documentation, e.g building regulation plans.
  • Documents for rooms in the roof.
  • Warranties and certificates, e.g. cavity wall and loft insulation, solar panels, extractor fans, boiler, hot water cylinder.
  • Details about the heating and hot water systems.
  • Last 12 months energy bills – gas and electricity.

We ask that this information is ready for the date and time of the visit as these are crucial in helping us make an accurate assessment of the retrofit needs of your property.

We may also have specific information we will need from the coordinator and will notify the homeowner of this in advance of the visit.

The day of the survey.

We will arrive on time and if we are running behind we will call in advance to update the client.

Currently we follow government Covid-19 guidelines on social distancing and wear face masks, gloves and sanitise prior to and after visiting sites. Click here for more information.

On arrival we will hold a short interview with the homeowner about any issues they have experienced with the property over the time of its occupancy, collect and record any information such as that in the list above.

Energy assessment, survey, floor plan and collection of evidence.

This is carried out in a similar way to that which an EPC is carried out only in much more detail.

We will then move through the property carrying out measurements of the rooms, walls, windows, doors, and photographing most of what we see.

The information collected is recorded in detail on the floorplan and will be carried out in all rooms including the roof and loft space internally and externally.

Condition assessment.

As we carry out our measurements we will be making notes and recording information about the condition inside and outside of the building from an energy retrofitting perspective.

Any issues such as damp, mould, cracks, leaking gutters and roofs are noted, photographed and recorded in the report.

Ventilation assessment is important in a retrofitting assessment so we will pay particular attention to things such as bathroom fans, airbricks and windows to see if they are in working order.

Occupancy assessment.

We interview the occupants to determine the level and extent of energy use in the property and any issues they have with this.

We use tact and discretion to find out the information required as well as being objective and explaining the rationale behind the need to collect as much accurate information and data. In this way we show our clients that the overall assessment could lead to energy and cost savings.

The final report.

Once we have all the data from the site survey and have collected information from the homeowner we head back to the office to carry the calculations required, upload evidence collected, reconcile energy bills and produce the final report using Elmhurst’s software.

We lodge the final report on the Data Warehouse and upload a copy to the Retrofit Coordinator. It is expected that the coordinator will liaise with relevant professionals such as a designer to produce a retrofit plan which is best suited to the client’s home.

Contact us to discuss your requirements and ask for a quotation.


07867 787672



5 Harmans Yard Great Dunmow Essex CM6 1AS