VS
Venetia Shepherd
8 April 2021
✓ Recommends usSuch a brilliant and professional company. So good to deal with and the windows are really special — they have transformed our seaside cottage. Thank you so much!
If you own rental properties across Cornwall — whether a single buy-to-let or a portfolio of homes — St Austell Bay Windows and St Austell Bay Plastics is your local glazing partner for keeping your properties compliant, efficient and competitive in the rental market. Rising EPC requirements, tightening landlord regulations and increasing tenant expectations mean that the quality of windows and doors in your rental properties has never mattered more. Upgrading to A-rated double glazing is one of the most cost-effective ways to improve your property's energy rating, reduce tenant energy bills and add long-term value — making it both a compliance investment and a commercial one. We work with individual landlords and portfolio investors across St Austell, Truro, Bodmin, Falmouth, Newquay, Fowey, Lostwithiel, Liskeard, Padstow and St Mawes. Our own in-house fitting team works efficiently and cleanly in occupied and void properties alike — with minimal disruption, fast turnaround and full Certass certification on every installation.
Flexible Finance
Spread the Cost of Your Home Improvements
Make windows, doors and conservatories more affordable with monthly payment options — including no-deposit deals for qualifying customers.
- Flexible monthly payments
- No-deposit options available
- Quick online application
- Subject to status and credit checks
Yes. Upgrading single-glazed or inefficient windows to A-rated double glazing is one of the most effective interventions for improving an EPC rating. Our team can advise during your free survey on which products will have the greatest impact on your specific property's energy performance — helping you reach EPC C ahead of the 2025 minimum standard for new tenancies.
Yes. Our team is experienced at working in occupied properties — we work cleanly, professionally and with full consideration for tenants. We will agree installation dates directly with you and can liaise with your tenants or letting agent to arrange access. Installations are typically completed in a single day with minimal disruption.
Yes. Landlords with multiple properties across Cornwall can open a trade account with St Austell Bay Plastics and access portfolio pricing across our full product range. Whether you're upgrading one property now or planning a programme of upgrades across your portfolio, our team will work with you on a pricing structure that makes sense for your investment.
Yes. Every window and door installation we carry out is Certass registered, providing full building regulation compliance and legal documentation. This is a requirement under the Building Regulations 2010 for all window and door replacements — and our Certass registration means you receive the necessary certificates without needing to notify building control separately. Certificates are issued on the day of completion.
Why Choose Us
Based in St Austell
We're Your Local Specialists. We're not a national chain. We live and work in the same area as our customers. When you choose St Austell Bay Windows and St Austell Bay Plastics , you're supporting a local family business that genuinely cares about its reputation.
Up to 10-Year Insurance-Backed Guarantee
Every window, door and conservatory we fit is backed by up to 10-year insurance-backed guarantee — not just a piece of paper, but a fully insured guarantee you can rely on even if circumstances change.
Flexible Finance Available
Spread the cost of your new windows or doors with our flexible finance options — including no-deposit deals. Making home improvement accessible for every budget in St Austell and surrounding areas. Subject to status.
Certass Registered
Every installation we carry out is Certass registered, giving you legal compliance, building regulation sign-off and full documentation. All our windows and doors meet Secured by Design standards for maximum home security.
In-House Fitters
Our installations are always carried out by our own trained, experienced team — never sub-contracted out. That means consistent quality, accountability and a finish you'll be proud of.
A-Rated Energy Efficient Products
All our double glazed windows achieve Window Energy Rating A as standard, with U-values as low as 1.2 W/m²K — keeping your home warmer and your heating bills lower all year round.
Step 1 - Free Home Survey
Step 2 - Your Personal Quote
Step 3 - Final Survey
Step 4 - Products Are Manufactured
Step 5 - Professional Installation
Covering St Austell & All Surrounding Towns
Honest advice, quality products and a finish you'll be proud of.
When you invest in new windows or doors, you want complete peace of mind — and that's exactly what we deliver. Every installation carried out by St Austell Bay Windows and St Austell Bay Plastics is backed by an insurance-backed guarantee of up to 10 years as standard.
That means your frames, glazing units, locks and workmanship are all covered long after our vans have left your driveway. Your installation is also registered with CERTASS for building regulation compliance.
Every installation is carried out by our own in-house team of experienced local fitters - and we never sub-contract. That means consistent quality, full accountability and a clean, tidy finish every single time.
From your free home survey through to the final fit and CERTASS sign-off, we manage the entire process ourselves. Most installations are completed within a day or two, with minimal disruption to your household.
