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Retrofit and Energy Efficiency

Stop visiting properties to look at them.

Retrofit schemes are known for excessive site visits. Assessors, designers, installers, evaluators, auditors. The same property accessed again and again. With AIM, the only visit that needs a person on site is the one where someone is actually installing.

The problem

Every role visits. Nobody shares. The homeowner pays the price.

A typical retrofit project sends five different people to the same property. Each one collects their own data in their own format. The homeowner is disrupted every time, and the project still ends up with gaps in the evidence chain.

Assessors visit to assess

The Retrofit Assessor walks the property, takes photos, writes notes. That data sits in their system. Nobody else can access it.

Designers visit to measure

The Retrofit Designer needs room dimensions, existing conditions, services layout. The assessment data is not detailed enough, so they book another visit.

Installers visit to scope

Before works begin, the installer needs to see the property. Another visit, another disruption, another set of photos that live on someone's phone.

QA visits to check

Quality assurance relies on the installer choosing what to photograph. Then an inspector visits anyway because selective evidence is not evidence.

Evaluators visit to verify

Post-installation, the Retrofit Evaluator needs to compare before and after. Without a shared baseline, that means another appointment with the homeowner.

Auditors request evidence after the fact

When Ofgem or DESNZ request documentation, teams scramble to reconstruct records from emails, folders, and memory. 8 to 12% of ECO measures are rejected on evidence grounds.

A new way of working

Capture once. Everyone works remotely. Only visit to install.

One 360 capture at the start of the project creates a digital model of the property. From that point, designers work remotely, contractors scope remotely, QA audits remotely, and evaluators compare before and after without scheduling another appointment. The homeowner is only disrupted when someone is actually installing.

Designers work from the model

Room dimensions, existing conditions, services layout. The Retrofit Designer accesses everything from their desk. No site visit required, no waiting for access appointments.

Contractors scope remotely

Share the digital model with the installer before works begin. They arrive ready to install, not to assess. POIs mark exactly what needs doing and where.

Auditors verify without visiting

Timestamped 360 evidence at every stage. The Retrofit Evaluator compares outcomes against the original baseline remotely. Ofgem or DESNZ request evidence and it already exists.

The only time someone should be on site is when they are physically installing measures. Everything else, design, scoping, QA, evaluation, audit, happens from the digital model.
PAS 2035 compliance

One capture supports the full PAS 2035 documentation chain.

PAS 2035:2023 defines the whole-house, fabric-first approach to domestic retrofit. AIM maps directly to the five stages that every compliant project must document.

Stage 1

Pre-assessment baseline

Walk the property with a 360 camera before any works begin. Every room, every surface, every defect captured in its original state with a timestamp.

Stage 2

Design reference

The Retrofit Designer accesses the digital model remotely. Measurements, room layouts, existing conditions; all available without a site visit.

Stage 3

Installation evidence

Capture before, during, and after each measure. Pin evidence to the exact location in the digital model. No more unattributed photos in folders.

Stage 4

Handover documentation

A complete visual record of the property at every stage, accessible to every role in the PAS 2035 chain. One platform, one version of the truth.

Stage 5

Evaluation and monitoring

Compare the property over time. The Retrofit Evaluator can verify outcomes against the original baseline without scheduling another visit.

Funding compliance

Protect your funding from clawback.

8 to 12% of ECO measures are initially rejected on evidence grounds. That is money already spent, work already done, clawed back because the paperwork did not hold up.

ECO4

Ofgem audits sample projects. Insufficient before/after evidence is the most common reason for rejected measures. Circa 4 billion in funding at stake.

SHDF

DESNZ audits are rigorous and getting more so. Social housing providers must demonstrate full PAS 2035 compliance on every funded project.

HUG2

The full PAS 2035 evidence chain is required. 630 million in funding, with local authorities bearing the compliance risk.

How AIM eliminates this risk

360 capture creates a timestamped, immutable visual record at every stage. The evidence exists before anyone asks for it, not after.

The cost of a single rejected measure dwarfs the cost of capturing the evidence. AIM creates the audit trail before anyone asks for it.
Comparison

Traditional retrofit documentation vs. AIM

Without AIM

  • Every role visits the property separately to collect their own data
  • Evidence is phone photos sorted into folders, dates guessed from file metadata
  • Coordination happens through email chains between five PAS 2035 roles
  • QA relies on the installer choosing what to photograph
  • Audit trail assembled retrospectively when the funding body asks
  • 8 to 12% of ECO measures rejected on evidence grounds

With AIM

  • One capture visit. Designers, contractors, and auditors all work remotely from the model
  • 360 walk-through captures every surface, timestamped and geolocated
  • All PAS 2035 roles access the same digital model on the same platform
  • Complete visual record. Nothing selectively omitted
  • Audit trail exists from day one, immutable, always accessible
  • Evidence exceeds every current funding body requirement
MEES compliance

EPC deadlines are approaching. Digital records make retrofit planning practical.

The Minimum Energy Efficiency Standards already require EPC E. The proposed move to EPC C by 2028 to 2030 will affect millions of properties. Fines reach £30,000 for residential and £150,000 for commercial non-compliance.

A digital model of your stock gives you the baseline to scope retrofit works, prioritise spend, and track progress towards compliance targets. No more estimating from incomplete records.
How it works

Three steps. One visit. Permanent evidence.

1

Capture

Walk the property before works begin. A 360 camera captures every room, every surface, every detail. Tag POIs for defects, existing measures, and notable conditions as you go. As quick as it takes to walk around.

2

Process and host

Upload from your phone. The digital model is built automatically in our UK cloud. Every PAS 2035 role accesses the same record, the same measurements, the same evidence base.

3

Click and navigate

Click a POI and you are taken directly to the tagged location in the digital model. Designers measure remotely. Contractors scope remotely. Evaluators compare before and after without another visit.

Survey time 60% reduction across capture and documentation
Return visits Zero. Every role works from the same digital model.
Remote measurement 5 minutes from a desk. Not a 2 to 3 hour site visit.
Users Unlimited. No per-seat licensing. Assessors, designers, installers, evaluators, auditors.
Project savings

What could AIM save your retrofit programme?

A typical retrofit project sends 5 different people to the same property. With AIM, only the installer needs to be on site. Calculate what that means across your programme.

Professional tier, £5,000/yr + £20 per property
domestic properties across the retrofit programme
assessment + design + scoping + QA + evaluation
installation visit only
appointment + travel + no-shows + staff time
Visits eliminated
2,000
80% fewer visits across the programme
Visit cost saving
£92,000
2,000 fewer disruptions to homeowners
Your AIM cost (Professional)
£15,000
£5,000 sub + £10,000 scans (500 × £20)
Net annual saving
£77,000
6.1× return on investment
Powered by AIM A digital model at the core of their workflows.
360 Group Air Solutions Atkins Realis Bromford Bruton Knowles Chequers Churchill Contact Solar De Montfort University Dodd Group Eec Frankham Gleeds Housing Plus Group Iron Oak Homes Lancaster City Council Lovell Metron Midland Heart Mobile Cad Solutions North Star Housing Sandwell Council Twiin Digital United Infrastructure University Of Oxford Uwe Bristol Wates Wps 360 Group Air Solutions Atkins Realis Bromford Bruton Knowles Chequers Churchill Contact Solar De Montfort University Dodd Group Eec Frankham Gleeds Housing Plus Group Iron Oak Homes Lancaster City Council Lovell Metron Midland Heart Mobile Cad Solutions North Star Housing Sandwell Council Twiin Digital United Infrastructure University Of Oxford Uwe Bristol Wates Wps
Iron Oak Homes Lancaster City Council Lovell Metron Midland Heart Mobile Cad Solutions North Star Housing Sandwell Council Twiin Digital United Infrastructure University Of Oxford Uwe Bristol Wates Wps 360 Group Air Solutions Atkins Realis Bromford Bruton Knowles Chequers Churchill Contact Solar De Montfort University Dodd Group Eec Frankham Gleeds Housing Plus Group Iron Oak Homes Lancaster City Council Lovell Metron Midland Heart Mobile Cad Solutions North Star Housing Sandwell Council Twiin Digital United Infrastructure University Of Oxford Uwe Bristol Wates Wps 360 Group Air Solutions Atkins Realis Bromford Bruton Knowles Chequers Churchill Contact Solar De Montfort University Dodd Group Eec Frankham Gleeds Housing Plus Group
Jo Wilkinson
The EPC dashboard saves us time and constantly updates us with our housing stock’s energy performance. The AIM team have supported us on our digitisation journey, and we look forward to a long and mutually beneficial partnership.
Jo Wilkinson
Chief Officer, Lancaster City Council
Lancaster, United Kingdom
Jim Howard
AIM’s platform and inspection toolset has been integral in improving our workflow processes around the full life cycle of our projects, allowing our site and office teams to fully collaborate through a single platform.
Jim Howard
Business Development Manager, Churchill Group
United Kingdom

Stop sending people to look. Start capturing.

One capture per property. Every role works remotely. Evidence that survives the audit. Start on the next site visit.

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