Hertfordshire/Stevenage
Windows & Doors in Stevenage, Hertfordshire
Post-war new town and Old Stevenage heritage · SG1, SG2 · Serving Stevenage across Hertfordshire.
Why Stevenage
Stevenage Borough's Old Town conservation area covers the historic core. Our heritage sashes are prepared for that consent process; we spec A-rated glazing for the newer estates.
Postcodes we cover in Stevenage
SG1SG2
Stevenage combines the historic Old Town High Street with the post-war new town neighbourhoods and the growing Great Ashby estates across SG1 and SG2. Every survey is spec'd to the property.
Villages & neighbourhoods we cover
Old StevenageGreat AshbyChellsPin GreenBroadwaterBedwell
Popular in Stevenage, Hertfordshire
Most requested services for Stevenage homes.
Explore the ranges most commonly specified across Stevenage and the wider Hertfordshire area.
- uPVC windows in StevenageA-rated uPVC casements and sashes across Hertfordshire.Explore
- Aluminium windows in StevenageSlim-frame aluminium windows, any RAL — surveyed in Stevenage.Explore
- Flush casement windows in StevenageHeritage flush casements for period Hertfordshire homes.Explore
- Bifold doors in StevenageAluminium bifolds up to 7m — installed across Hertfordshire.Explore
- Conservatories in StevenageOrangeries and conservatories designed for Stevenage gardens.Explore
- Garden rooms in StevenageInsulated garden studios built across Hertfordshire.Explore
What we install in Stevenage, Hertfordshire
Windows, doors & extensions for Stevenage homes.
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A-rated uPVC
Upgraded thermal performance for SG1 and SG2 family estates.
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Old Town heritage
Painted casements and sashes for Old Stevenage frontages.
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Aluminium bifolds
Slim aluminium bifolds for the typical Stevenage rear extension.
Stevenage, Hertfordshire · recent work
Recent installs in Stevenage, Hertfordshire.
Installations from across Hertfordshire that reflect the character of Stevenage — heritage detailing and contemporary glazing, delivered to showroom standard.
Quote by service — Stevenage, Hertfordshire
Windows & doors quotes in Stevenage.
Windows in Stevenage
Windows — quote in one working day
uPVC, aluminium and heritage flush casements — surveyed and quoted for your property.
Doors in Stevenage
Doors — quote in one working day
Front, back, French and patio doors — PAS 24 security and a made-to-measure finish.
Bifolds in Stevenage
Bifolds — quote in one working day
Slim aluminium bifolds up to 7m — any RAL, traffic-door option, concealed threshold.
Conservatories in Stevenage
Conservatories — quote in one working day
Victorian, Edwardian, lantern-roof and orangery designs — turnkey design & build.
Garden Rooms in Stevenage
Garden Rooms — quote in one working day
Insulated garden studios and offices, fully wired and finished to house standard.
Full service list — Hertfordshire
Everything we install in Stevenage, Hertfordshire.
uPVC Windows in StevenageAluminium Windows in StevenageFlush Casement Windows in StevenageuPVC Doors in StevenageAluminium Doors in StevenageBifold Doors in StevenageSliding Doors in StevenageComposite Front Doors in StevenageFrench Doors in StevenagePatio Doors in StevenageFront Doors in StevenageBack Doors in StevenageStable Doors in StevenageHeritage Steel Doors in StevenagePivot Doors in StevenageConservatories in StevenageVictorian Conservatories in StevenageEdwardian Conservatories in StevenageLean-to Conservatories in StevenageGable-end Conservatories in StevenageP-shape Conservatories in StevenageOrangeries in StevenageGarden Rooms in StevenageCasement Windows in StevenageTilt & Turn Windows in StevenageSash Windows in StevenageBay & Bow Windows in StevenageFrench Casement Windows in StevenageFixed Picture Windows in StevenageStructural Corner Windows in StevenageHeritage Steel-Look Windows in StevenageGeorgian Bar Windows in StevenageArched Head Windows in Stevenage
Stevenage, Hertfordshire · client voices
What Stevenage homeowners tell us.
A small selection of reviews from clients across Stevenage and the surrounding Hertfordshire area.
"The lantern roof over our new kitchen has completely changed the space. Beautifully specified and immaculately installed."
"Their quotation was the clearest of the four we received — line-by-line, no surprises. The finished install matches the drawings exactly."
"Fourteen windows and a set of French doors across our Edwardian semi. Six days on site, zero drama, and the difference in warmth is remarkable."
Stevenage, Hertfordshire · FAQs
Common questions from Stevenage homeowners.
- Do you install windows and doors in Stevenage?
- Yes — South East Windows & Doors covers Stevenage (SG1, SG2) and the surrounding Hertfordshire area weekly, including Old Stevenage, Great Ashby, Chells. Every project is surveyed, manufactured and installed by our own teams.
- Which postcodes around Stevenage do you cover?
- We cover SG1, SG2 across Stevenage, together with neighbouring parts of Hertfordshire. If your postcode isn't listed, call 020 3633 0405 — we almost certainly still cover you.
- What styles of window and door suit Stevenage properties?
- Stevenage Borough's Old Town conservation area covers the historic core. Our heritage sashes are prepared for that consent process; we spec A-rated glazing for the newer estates. In practice that means we frequently specify heritage flush casements, slim aluminium sashes, painted composite front doors and aluminium bifolds for Stevenage homes.
- How long does a typical installation take in Stevenage?
- Most full-house window projects in Stevenage take 2–4 days on site once frames are manufactured. Bifolds, conservatories and garden rooms are quoted with a written programme so you know exactly what to expect.
- Do you provide fixed written quotes for Stevenage homes?
- Yes. Every Stevenage enquiry gets a free on-site survey and a fixed written quote — no pressure selling, no "today only" discounts. Painted casements and sashes for Old Stevenage frontages.
- Are your uPVC windows suitable for Stevenage homes?
- Our A-rated uPVC casement and flush-sash windows are the most popular choice across Stevenage — energy-efficient, virtually maintenance-free and available in woodgrain and painted finishes to sit comfortably alongside neighbouring properties in Old Stevenage and the wider Hertfordshire area. Every frame is internally reinforced, fitted with Q-Lon seals and backed by a 10-year guarantee.
- Can you supply aluminium windows in Stevenage in a specific RAL colour?
- Yes. Aluminium windows for Stevenage projects are available in any RAL colour, plus dual-finish (different colour inside and out) so you can match existing joinery or a bespoke scheme. Slim 55–75mm sightlines suit the larger openings we see on newer builds and contemporary extensions around Stevenage and Hertfordshire.
- How wide can aluminium bifold doors go on a Stevenage extension?
- We install aluminium bifolds up to 7m wide and 2.4m tall across Stevenage — typically in 3, 4, 5 or 6-pane configurations with an optional traffic door for everyday use. Every set is surveyed on site so structural openings, thresholds and lintels are checked before manufacture, and thermally-broken frames keep U-values low for Hertfordshire winters.
- Do I need planning permission for a conservatory in Stevenage?
- Most conservatories in Stevenage fall under permitted development, provided the extension stays within volume, height and boundary limits. If your property is listed, in a conservation area or has had previous extensions, we'll advise on a full planning submission and can liaise with the local Hertfordshire planning office on your behalf. Every conservatory we install is Building Regulations compliant.
- Do garden rooms in Stevenage need planning permission?
- Insulated garden rooms in Stevenage are usually built under permitted development — under 2.5m to the eaves when within 2m of a boundary, and no more than half your garden's footprint. We handle the design, base, insulation, wiring and finishes so your Stevenage garden studio is ready to use, and we'll flag any planning considerations before you commit.
- Can bifolds, conservatories or garden rooms be installed year-round in Stevenage?
- Yes — we install across Stevenage and Hertfordshire throughout the year. Frames and glass are manufactured off site, and installations are sequenced so your home stays weather-tight day-to-day. For garden rooms and conservatories we can pour bases in autumn and winter so you're ready to use the space by spring.
Nearby towns · Hertfordshire
Also serving near Stevenage.
Explore our nearest Hertfordshire town pages, plus a selection from neighbouring counties we regularly cover from the Stevenage route.
- CheshuntHertfordshireEN7, EN8Lea Valley family town and green-belt villagesView Cheshunt
- BaldockHertfordshireSG7Georgian coaching town on the Great North RoadView Baldock
- SawbridgeworthHertfordshireCM21Stort Valley market town and heritage frontagesView Sawbridgeworth
- St AlbansHertfordshireAL1 – AL4Cathedral city and conservation streetsView St Albans
- HarpendenHertfordshireAL5Common-side villas and family estatesView Harpenden
- WatfordHertfordshireWD17 – WD25Town-centre terraces and Metro-land estatesView Watford
- PottonBedfordshireSG19Ivel Valley market town and Sandy-edge villagesView Potton
- Stony StratfordBuckinghamshireMK11Georgian coaching town on Watling StreetView Stony Stratford
- EnfieldLondonEN1 – EN3Town-centre terraces and Chase-side homesView Enfield
Stevenage, Hertfordshire
Explore our Stevenage service pages.
Every service we install across Stevenage (SG1, SG2) — plus the wider Hertfordshire county hub and our full coverage map.
View Hertfordshire coverageQuote request · Stevenage, Hertfordshire
Book your Stevenage survey.
Tell us about your Stevenage project. A senior surveyor covering Hertfordshire will call within one working day to arrange a free on-site visit.
Covering: SG1, SG2
Neighbourhoods: Old Stevenage, Great Ashby, Chells, Pin Green