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Build an Edwardian conservatory.
Square-ended classic conservatory — maximum usable floor space, perfect for furniture and dining.
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Top tips
Hiring a conservatories, without the regret.
Four moves that separate a smooth job from a nightmare.
Single large pane vulnerability
The wider Edwardian walls have bigger glass panels — wind load on large panes can flex the frame. Specify wind-resistant glass spec for exposed locations.
Roof leaks at the corners
The four hip-junctions are the most leak-prone areas. Insist on lead-flashed corners not just silicone.
Limited natural light at rear
The flat front allows lots of light but the rear wall (against the house) blocks some. Add a roof window if the conservatory is over 4m deep.
Heat retention
Square shape with glazed roof loses heat more than a tiled equivalent. Specify upgraded glazing or warm roof.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and a typical week-by-week schedule.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Small Edwardian (3m × 3m)uPVC, polycarbonate roof
£9.5k–£16k
Medium Edwardian (3.5m × 4m)uPVC, glass roof
£12.5k–£22k
Large Edwardian (4m × 5m)Aluminium frames
£18k–£35k
Brick base + slabCombined
£2.2k–£6.5k
Underfloor heatingTied to existing boiler
£1.2k–£3.5k
Lightweight tiled roofWarm roof, all-year use
£4.5k–£12k
!
Quote spread is typically ± 18% — always get 3 quotes.
Timeline
Mid-size conservatory · week by week
Typical
5 phases · 5 wk
5 phases · 5 wk
W1
W2
W3
W4
W5
Foundations + dwarf wall
Frame + glazing
Roof + ridge
Electrics + flooring
Snags + handover
!
Schedule slips on dependencies — pad each phase by 10–20% for real-world delays.
At a glance
Infographic · VideoThe Conservatories briefing.
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Conservatories explained
Edwardian conservatories are the rectangular box-shape classic — flat front, square or rectangular footprint, hipped roof. They give more usable floor space than a Victorian (no curved facets eating into the room) and suit both Edwardian and modern homes. Expect to pay £11,000–£30,000 fitted in the UK.
What Does the Work Involve?
Same base build as Victorian: 200mm reinforced concrete slab, insulated DPM, brick dwarf wall to cill height. The frame is simpler — four corners, square plan — but the hipped roof is more complex than the gable on a Victorian. Glass or tiled roof, French or sliding doors at the side or rear, fixed glazed walls.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Small Edwardian (3m × 3m) | 9,500 | 16,000 | uPVC, polycarbonate roof |
| Medium Edwardian (3.5m × 4m) | 12,500 | 22,000 | uPVC, glass roof |
| Large Edwardian (4m × 5m) | 18,000 | 35,000 | Aluminium frames |
| Brick base + slab | 2,200 | 6,500 | Combined |
| Underfloor heating | 1,200 | 3,500 | Tied to existing boiler |
| Lightweight tiled roof | 4,500 | 12,000 | Warm roof, all-year use |
| Bi-fold or sliding doors | 2,500 | 8,000 | Replaces standard French |
How Long Does It Take?
Same as Victorian: 4–6 weeks total. The simpler square footprint means slightly faster base brickwork (less detailing).
DIY or Professional?
Professional. Foundations, electrical work and FENSA-registered frame fit are all professional requirements.
Choosing the Right Tradesperson
Conservatory specialist or local recommended installer. Same brand questions as Victorian — Anglian, Everest, Eurocell, Liniar. FENSA, Certass, DGCOS membership and 10-year IBG warranty.
UK Regulations
Same exemption rules as Victorian: under 30 m² and separated by external doors = Building Regs exempt. Permitted development for size limits. Listed buildings and conservation areas have stricter rules.
Common Problems
- Single large pane vulnerability: The wider Edwardian walls have bigger glass panels — wind load on large panes can flex the frame. Specify wind-resistant glass spec for exposed locations.
- Roof leaks at the corners: The four hip-junctions are the most leak-prone areas. Insist on lead-flashed corners not just silicone.
- Limited natural light at rear: The flat front allows lots of light but the rear wall (against the house) blocks some. Add a roof window if the conservatory is over 4m deep.
- Heat retention: Square shape with glazed roof loses heat more than a tiled equivalent. Specify upgraded glazing or warm roof.
Frequently Asked Questions
Edwardian or Victorian — which is bigger inside?
Edwardian uses the floor space better — no curved facets eating into the corners. A 3m × 4m Edwardian has more usable floor than a 3m × 4m Victorian.
Which style suits my house?
Edwardian suits Edwardian terraced houses and modern brick homes — the squareness echoes the architecture. Victorian suits Victorian terraced and detached homes with bay windows or rounded features.
Does Edwardian cost more or less than Victorian?
Roughly the same per m². Slightly less for very small footprints (the simpler shape means less brickwork detailing) and slightly more for large ones (the bigger glass panes).
Can I have a tiled roof on an Edwardian?
Yes — lightweight tiled (warm) roofs are very popular as upgrades. Most manufacturers (Guardian, Ultraroof, Equinox) offer a tiled option for Edwardian shapes.
How big can an Edwardian conservatory be?
Up to 30 m² floor area to stay Building Regs exempt. Above that, full Building Regs compliance is needed. Permitted development limits also apply (3m or 4m depth, plus side limits).
Will it add value?
Yes — quality builds add 5–10%. Tiled lightweight roofs add more than glass; specify solid roof for the best resale value gain.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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