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P-Shaped and T-Shaped Conservatory Cost: 2026 UK Prices

From £15,000 for uPVC. Two distinct zones, larger footprint, suited to bigger gardens.

Updated June 2026.

P-Shaped Conservatory Prices (2026)

Overall sizeuPVC (glass roof)AluminiumHardwood
Small P (4m x 3m total)£15,000 - £20,000£21,000 - £28,000£30,000 - £42,000
Medium P (5m x 4m total)£20,000 - £27,000£27,000 - £38,000£38,000 - £55,000
Large P (6m x 5m total)£26,000 - £35,000£35,000 - £50,000£50,000 - £72,000
T-shaped (medium)£22,000 - £32,000£30,000 - £44,000£44,000 - £64,000

Prices include supply, install, glass roof, dwarf wall, and electrics. Lead time typically 10-14 weeks. Source: FMB, Checkatrade 2026.

What Is a P-Shaped Conservatory?

A P-shaped conservatory combines a main Victorian or Edwardian section with a lean-to wing extending from one side, creating a floor plan that resembles the letter P when viewed from above. The Victorian or Edwardian section typically serves as the lounge or sitting area, while the lean-to wing provides a dining space or open-plan kitchen extension.

The main practical advantage is defined zones without internal walls. Instead of a single large rectangle, you have two connected but distinct spaces - the kind of layout that estate agents describe as an "open-plan kitchen-diner" when it is built as a full extension. A well-designed P-shaped conservatory can create this feel at significantly lower cost.

P-shaped conservatories suit larger detached and semi-detached homes with rear gardens of at least 8-10 metres depth, as the combined footprint can be substantial. Installation typically takes 1-2 weeks on site and 10-14 weeks total from survey to completion, reflecting the more complex build relative to a simple Edwardian.

P-Shaped vs T-Shaped

P-shaped

Lean-to wing on one side. Asymmetric floor plan. Most common and practical. Better for most rear gardens.

T-shaped

Extension on both sides or a central projection. Symmetric floor plan. Larger footprint, more complex build, higher cost.

When to Choose P-Shaped

  • Budget above £18,000
  • Garden depth 8m or more
  • Want dining and lounge zones
  • Upgrading from a single-section conservatory

Calculate Your P-Shaped Conservatory Cost

Conservatory Cost Calculator

Enter your details for a 2026 price estimate. Based on FMB, Checkatrade, and Which? data.

Floor area: 20.0 m2

Estimated Total Cost

£25,600 to £57,100

Indicative estimate only. Obtain 3 written quotes.

Cost Breakdown

Frame + glazing (5m x 4m)£21,800 - £50,800
Roof upgrade+£1,500 - £2,500
Base / foundation£1,500 - £3,000
Electrics+£800

Excludes: flooring, heating, furniture, VAT where applicable, planning fees. VAT is typically 20% on labour and materials.

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P-Shaped Conservatory Questions

What is a P-shaped conservatory?
A P-shaped conservatory combines a main Edwardian or Victorian section with a lean-to wing attached to its side, creating a floor plan that resembles the letter P. The Victorian or Edwardian end typically forms the lounge zone, while the lean-to wing creates a dining or kitchen area. This is the most versatile layout for homeowners who want a large conservatory with defined spaces.
P-shaped versus T-shaped conservatory - what is the difference?
A P-shaped conservatory has the lean-to extension on one side of the main structure, producing an asymmetric P floor plan. A T-shaped conservatory has extensions on both sides, or a central projection from the back, producing a T-shaped floor plan. T-shaped conservatories are less common, more expensive, and require a larger garden footprint.
Is a P-shaped conservatory worth the extra cost over an Edwardian?
For homeowners with sufficient garden space and a budget above £18,000, the P-shaped is generally worth the premium. The additional lean-to wing typically adds 30-50% to the floor area while adding only 20-30% to the cost, because the lean-to section is structurally simple. You also get defined zones - a clear dining space and lounge space - which many buyers find more usable than a single large rectangle.
Does a P-shaped conservatory need planning permission?
A P-shaped conservatory usually falls under permitted development rights, subject to the standard rules: single storey, no higher than 4 metres, rear extension within 3m (attached) or 4m (detached) of the rear wall, and covering less than 50% of the garden. The combined footprint of both sections must not breach the 50% garden coverage rule, which is more likely on smaller gardens.

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Scope. These pages are a price reference. They are not planning, permitted development or building control advice. What counts as permitted development, and which parts of the Building Regulations apply, turn on your specific property and its history, so check with your local planning authority and against your installer's written quotation before you commit to anything.

Updated 2026-06-09