Bay windows in Derby
From £1,600
| Service | Typical price in Derby |
|---|---|
| UPVC double glazed windows | £396 - £792 |
| Sash windows (UPVC & timber) | £792 - £2,112 |
| French & patio doors | £1,144 - £2,816 |
| Bay & bow windows | £1,408 - £3,344 |
| Secondary glazing | £308 - £836 |
Bay window quotes for Derby period homes
Derby’s bay-window stock splits neatly between two eras: Victorian projecting bays on the industrial-era terraces of Normanton and Pear Tree, and 1930s canted or square bays on interwar semis across Allestree, Chaddesden and Littleover. Both need structural care during replacement, and our comparison service prioritises installers who inspect lintels and corner posts before quoting.
Why locals in Derby choose Legacy Windows
- Typical quotes range from £1,410 to £3,340, depending on bay size, roof detail and material choice.
- Head plates, corner posts and lintels are always specified — never assumed away.
- Frames meet Part L 2022 (Uw 1.4 W/m²K or better) with Part F trickle vents where required.
- Timber, UPVC and aluminium alternatives compared for a fair like-for-like on cost and lifespan.
- Every installer is FENSA or CERTASS registered, handling building control on your behalf.
Areas we cover around Derby
Bay specialists on our panel cover DE1, DE21, DE22, DE23 and DE24, taking in Allestree, Littleover, Mickleover, Chaddesden and Normanton. Interwar canted bays in Alvaston and Oakwood are common, along with Victorian projecting bays around Peartree. Nearby projects in Belper, Duffield and Burton upon Trent are also handled.
Frequently asked questions
Do bay windows need a new lintel when replaced? Not always. If the existing steel or timber lintel is sound, it can be retained. Corner posts and head plates carrying part of the load above are the more common issue on Derby Victorian terraces and interwar semis.
Can I convert a square bay to a bow window? Yes, but changing the shape alters the external appearance, which may need planning permission in a conservation area. On unlisted homes outside protected streets, it usually falls under permitted development.
How long does a bay replacement take? A typical square or canted bay is fitted in one to two days once made to measure. Lead times from survey to install run four to seven weeks. Scaffolding is normally needed only if the bay carries a first-floor structure above.
Windows and doors in Derby - local context
Terraced streets around Normanton and Pear Tree, interwar semis in Allestree and Chaddesden, plus a growing city-centre apartment stock.
Dominant era of housing stock: Victorian and interwar.
Heritage note: Around 20 conservation areas, mainly in the historic centre and Little Chester.
- Allestree
- Littleover
- Mickleover
- Chaddesden
- Normanton
Postcodes we cover in Derby
- DE1
- DE21
- DE22
- DE23
- DE24
Not seeing your postcode? Request a quote anyway - we likely still cover it.