At Cosy Homes Oxfordshire, we believe in clarity to give you confidence when it comes to costs. That’s why we start with a Whole House Plan, giving you a tailored roadmap of the best improvements for your home. Once you have a plan in place, we provide transparent pricing at every stage, so you can move forward knowing exactly what to expect.

Start your retrofit journey with our free Plan Builder advice service. Simply enter your postcode to get an overview of your home’s current energy use and possible improvements – a quick and easy first step.

Every home is unique, so for tailored advice and a deeper understanding of the best upgrades for you, we recommend a Whole House Plan. It will give you a detailed, personalised roadmap to help make your home more efficient and comfortable.

What does it cost?

Your Whole House Plan

The cost of retrofitting your home depends on its size and what needs doing. That’s why we offer a personalised approach. Our Whole House Plan gives you an in-depth look at the most cost-effective measures tailored to your home, creating a long-term vision for energy efficiency and comfort.

Here’s what the Whole House Plan costs, inclusive of VAT:

• 1-2 bed home – £375
• 3-4 bed home – £600
• 5+ bed home – price on request*

This cost covers the detailed assessment and expertise needed to design a right plan that is right for your home. *Homes with more than five bedrooms can be a bit more complex, so we may need extra details.

Investing in a Whole House Plan can help you avoid costly mistakes and make the most of your budget by identifying the most effective upgrades. Plus, you may be eligible for grants or funding to support your retrofit. Get in touch to explore your options!

Technical Specification

If you decide to move forward with improvements to your home, the next step is to finalise the details of your chosen insulation, ventilation, or renewable energy measures. Your Retrofit Coordinator will visit to explore the best options for your home and assess feasibility. They’ll then create a clear Technical Specification for contractors, ensuring a smooth installation process.

This visit also provides an updated estimate of project costs. You’ll have a follow-up call with your Retrofit Coordinator and a Project Administrator to answer any questions before moving ahead.

Fees start at around £600 for a single measure, with a typical project including five key measures costing approximately £1,600 (incl. VAT).

Installation support package

We oversee your home energy upgrades using trusted, quality-assured contractors. Your Retrofit Coordinator manages technical details, scheduling, and site visits to ensure a smooth installation and prevent costly rework. Our team provides updates and support throughout.

Once work is complete, you’ll receive a handover pack with aftercare details, and we’ll invite your feedback. Fees are fixed based on the measures installed and level of support needed, with payment due when work begins. Contact us for a fee estimate.

Funding your green energy project

Looking to fund your retrofit project? We have partnered with Scroll Finance to offer flexible financing options tailored to energy efficiency upgrades.

Whether you’re looking to bridge the gap between savings and project costs or finance the entire improvement, Scroll Finance provides innovative solutions to help make your home greener, more comfortable, and future-proof.

Scroll Finance specialises in green home improvement loans, offering solutions that fit different circumstances and budgets. Loan amounts range from £1,000 to £500,000, giving you flexibility to achieve your goals.