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Add-on Service

Quotes you can
actually compare.

We turn your plan into a tender-ready scope, ask the hard questions, and return a side-by-side quote comparison — so you avoid hidden exclusions and expensive variations.

  • Scope Pack
  • Installer Questions
  • Comparison Table

Why is it so hard to compare quotes?

Without a defined engineering scope, every installer quotes based on their own assumptions. One might include scaffolding, another excludes it. One uses premium wood fibre, another uses cheap foam.

"The cheapest quote often becomes the most expensive once the 'hidden' extras are added during construction."

Quote A
£18,500
  • No Scaffolding
  • 50mm Insulation
  • No warranty info
Quote C
£15,000
  • Wrong Material
  • "Provisional" cost
  • Includes VAT
Target
Standardised
Comparable
  • Fixed Scope
  • Specified Material
  • Defined Interface

De-risking the process

We act as your technical agent, ensuring installers are quoting for exactly what you need.

1. Tender-Ready Scope Pack

We convert your Retrofit Report into a technical scope document. This defines the "must-haves" (U-values, materials, ventilation strategy) so there is no ambiguity.

Sets the baseline

2. Installer Questionnaire

We don't just ask for a price. We require installers to answer specific questions about their methodology, warranty, timeline, and how they handle detailing.

Forces transparency

3. Comparison & Recommendation

We strip out the marketing fluff and present a line-by-line financial comparison, flagging risks and providing a professional recommendation on who to hire.

Empowers decision

More than just a spreadsheet

We provide a clear path forward. Our final report includes a distinct recommendation based on value and risk, not just the bottom-line price.

  • Clarifications log included (what we asked, what they said)
  • Caveats clearly listed (e.g., "Subject to final window measurement")
  • Next steps for contract signing drafted for you
Final Verdict

Recommendation: Installer B

Preferred
Why?

Most complete scope. Includes scaffolding and all waste removal. 5-year workmanship warranty confirmed.

Caveats / Risks

Price assumes standard access. Ensure parking bay suspension is arranged before start.

RETROFIT GREEN • TENDER REPORT • PAGE 14

How it works

1. Confirm Scope Basis

We use your Retrofit Report to establish the technical requirements.

Prerequisite
Retrofit Report or Technical Survey Required

2. Create Tender Pack

We produce the documents and installer questions.

Duration
~3-5 Working Days

3. Installer Pricing

Installers price the work. We manage clarifications and questions.

Duration
Variable (typically 2-3 weeks)

4. Comparison & Decision

We present the analysis and you select your partner.

Output
Final Comparison Report

Common Questions

Add tender support

We will review your requirements and provide a fixed-fee quote for managing your tender process.

Scope Pack Creation
Installer Management
Comparison Report

Prerequisite

Retrofit Report / Technical Survey