Your guide to costs
A smarter investment in a warmer, healthier home – with honest guidance every step of the way.
At Cosy Homes Oxfordshire, we believe in clarity – so you can make confident decisions about your home. That’s why we start with a Whole House Plan: a tailored roadmap showing what improvements will make the biggest difference, and when.
Once you have a plan in place, we provide transparent costs and support at every stage – no hidden fees, no pressure. Just clear, practical advice to help you move forward at your pace.
Not ready to commit?
Try our free online Plan Builder. It gives you a quick snapshot of your home’s energy use and possible improvements – a helpful first step if you’re just starting to explore your options.
“The Whole House Plan gave us a clear, structured view of our energy improvement options, including carbon impact. Excellent value for money – I’ve already recommended it!”
See Heather Comina‘s story
What does it cost?
Whole House Plan
Every home is different – and so is the cost of upgrading it. Our Whole House Plan gives you a personalised overview of the most effective improvements for your home, helping you make the most of your budget and avoid costly missteps.
Homes up to 4 bedrooms – £600 (incl. VAT).
Larger or more complex homes – price on request.
(We’ll talk it through with you first.)
A Whole House Plan is often the most cost-effective way to approach retrofit – helping you avoid unnecessary work, focus on the right measures, and spot potential funding opportunities early on.
Technical specification
If you decide to move ahead with improvements, we’ll help you finalise the detail. A Retrofit Coordinator will visit again to assess feasibility and create a clear Technical Specification for contractors – making sure everything runs smoothly from the start.
This stage also includes an updated project estimate and a follow-up call to answer your questions before moving forward.
Typical fees: From £600 for a single measure, and around £1,600 for a full home package (5+ key measures). (All prices include VAT).
Installation support package
When the work begins, we stay with you. Your Retrofit Coordinator will manage key details like scheduling, site visits and handovers – ensuring quality, minimising disruption, and preventing costly mistakes. We’ll keep you informed throughout and provide a handover pack when everything’s complete.
Fees for installation support depend on the scope of work and the level of service you need. We’ll provide a fixed estimate before anything begins.
Flexible finance options
We’ve partnered with Scroll Finance to offer flexible loans designed for energy-efficient home upgrades.
Whether you’re topping up your savings or financing your whole project, Scroll offers tailored green home improvement loans between £1,000 and £500,000 – helping you futureproof your home in a way that works for you.
Want to talk through your options?
We’re happy to help. Call 0330 223 2742 (Monday to Friday) or message us for a no-obligation chat about where to start – and what to expect.