UK residential SAP assessors since 2016

Get a fixed quote for your SAP calculations

Tell us about your project and upload any drawings you have. We'll review the details and confirm your fixed price before any work starts.

Takes around 5 minutes to get started, and unknown answers are fine. Upload drawings if available and we will review the technical detail.

Cutaway illustration of a house showing the elements a SAP calculation covers: fabric insulation, windows and doors, air tightness, solar gains, ventilation, heating, hot water and renewables

How it works

  1. 1

    Tell us about the project

    A few short questions about the type of project, its stage and where it is.

  2. 2

    Upload any drawings or specifications you have

    PDF plans, elevations, sections and specifications are all helpful.

  3. 3

    We review the details and confirm your quote

    Our SAP assessor checks everything and contacts you if anything needs confirming.

You do not need to have all the answers

Drawings are strongly encouraged because they help us quote accurately, but they are not mandatory. If something has not been decided yet, or you are unsure what is being asked, select "I'm not sure" and carry on. We treat that as a perfectly normal answer and confirm the detail with you later.

  • Choose "I'm not sure" on any question without being blocked
  • Upload drawings now or send them later
  • Our assessor confirms the technical detail with you
  • Save your progress and return whenever suits you

What we can help with

New-build SAP calculations

Design stage and as-built calculations for new houses.

Extensions and conversions

Support for extensions, barn conversions and changes of use.

As-built SAP and EPCs

Final SAP documentation and EPCs for completed dwellings.

Multiple dwellings and developments

Flats, apartment blocks and multi-plot housing schemes.

Experienced UK SAP assessors

Accredited assessors working on residential projects every day.

Support from design to as-built

We stay with the project from initial design through to as-built completion.

Delivered by Carbon Green Consulting

Backed by an established UK energy and sustainability consultancy.

Start your SAP calculation quote

Around 5 minutes to get started, and unknown answers are fine.

Start your quote