Conservatory Cost UK: Prices, Installation & Quote Checklist

Orangeries UK publishes a size-based guide table with a 2.5m × 2.5m example at £7,500–£12,500 for build/install including supply, and £5,000–£7,500 supply only. Its 3m × 3m example is £10,000–£14,000 with build/install including supply, and £8,000–£10,000 supply only.

The provider labels these as guide prices. It describes supply only as design, manufacture and supply, excluding installation. Before using a figure, ask which materials and specification it covers, whether VAT is included, and which groundwork or finishing tasks are outside the package. Do not treat the table as an all-inclusive quote for your property.

Request two clearly defined scopes if you are considering buying a kit and arranging the work separately. A supply-only purchase needs its own installation plan and a list of responsibilities. Ask who measures the site, checks the proposed base, arranges delivery, provides access equipment and resolves an installation issue.

For a fitted package, ask for the contractor’s exact inclusions rather than relying on the word ‘installed’. Record who provides each part of the job and whether the proposal covers the room ready for your intended use. If you already have a conservatory and only want a new roof, use the separate roof-replacement guide linked below.

Anglian says an accurate estimate needs the exact specification because designs and materials vary. Give each provider the same brief and ask for separately priced options so you can see the effect of changing the design.

Ask the contractor to inspect the site and state what base or foundation work is included. Request an explanation of any assumed ground conditions, existing base reuse or work to drainage. An advertised structure price does not tell you the cost of those tasks at your home.

Put every quotation into the same comparison list. Mark each item as included, separately quoted, provisional or excluded. Obtain a payable total including applicable VAT and ask how additional work will be agreed before it starts.

Planning Portal’s England guidance says a conservatory follows the same planning rules as a house extension. Permitted development can avoid a planning application only when the relevant limits and conditions are met. Restrictions and previous extensions can affect what is allowed.

Ask your local planning authority to confirm the position for your proposal when uncertain. This England guidance does not establish permission for a property elsewhere in the UK. Record who handles checks, applications and any associated fees before ordering.

Planning Portal describes conditions for a conservatory normally to be exempt in England: it is single storey, at ground level and below 30 square metres; it remains separated from the house by suitable external-quality walls, doors or windows; heating has independent controls; and glazing and fixed electrics meet applicable requirements. Size alone does not establish exemption.

The same guidance states that a new structural opening into the existing house requires building regulations approval even if the conservatory itself is exempt. Confirm the proposed design and house connection with the appropriate building control body; do not assume that a planning position also resolves building regulations.

Keep the agreed drawing and inclusions with the quotation. Ask for the completion timetable, payment stages, warranty coverage and how changes will be documented. Make sure the same specification appears in any revised offer.

The calculator below uses the figures you enter; it does not generate a market estimate. Enter one project as one booking, with the tax-inclusive main package price. Add only separately quoted extras that are not already included. Keep uncertain amounts identified as provisional rather than treating them as a confirmed total.