Our Costing Method, Stated in Full
Every mainstream UK source for conservatory prices is a lead generation business, including this one. The difference we are claiming is not neutrality. It is that we publish where our figures came from, how far they disagree, and which ones we do not have.
Every price on this site comes from a named UK source, with the date we checked it. Where two sources disagree we publish both figures rather than splitting the difference, and where nobody publishes a price we trust, we say so instead of inventing one. This page shows you how that works, so you can judge the numbers for yourself.
How solid is each number?
Every price table on this site carries one of three labels. They tell you how much weight a figure will take, so you can see which numbers are safe to plan around and which are only a starting point.
| Band | What it means |
|---|---|
| Well evidenced | Four or more sources, spread 2.0× or tighter, at least one source under 18 months old |
| Reasonably evidenced | Two or three sources, or a spread between 2.0× and 3.0× |
| Thin evidence | One source, or a spread above 3.0×, or every source undated |
Most conservatory prices rest on a single publisher, so Thin is the common label here, not the exception. The strongest figures we hold are the 3m × 3m and 4m × 4m tiled roof, where four independent UK publishers price the same job.
How a figure gets onto this site
| # | Rule | Why |
|---|---|---|
| 1 | Supply only and installed are never mixed | The commonest way published conservatory prices are made to look cheap |
| 2 | Size-banded totals beat per m² rates | The rate falls about 35% from the smallest roof to the largest, so multiplying a rate by your area over-quotes small jobs |
| 3 | A typical needs two or more sourced point estimates | Otherwise the slot says so. A midpoint between two numbers we do not trust is an invention |
| 4 | Outliers get their own labelled row, never blended in | A premium national installer at 2.6× the market is real information, but it is not the average |
| 5 | Every figure carries a source name and a date | Undated sources are capped at Thin evidence automatically, however plausible they look |
Contradictions we found, and what we did with them
A homeowner comparing quotes is walking into exactly these discrepancies. A site that only shows the tidy numbers is hiding the useful part.
| The contradiction | Size | What we did |
|---|---|---|
| A publisher's on-page estimator quotes £195/m² against £750/m² in its own body copy | 3.8× | We use the body-copy figure and leave the estimator out |
| Tile material-only rates published under a roof replacement label | 10× | Excluded from the reconciled band |
| Two publishers on the building control fee | 2.0× | Published both bands, £200 to £800, with the likely explanation stated as a likely explanation |
| Two publishers on structural reinforcement | 3.75× | Published the full £800 to £4,000 band as conditional, and said only a survey decides which end applies |
| The only two publishers pricing a 5m × 5m roof do not overlap at all | 1.79× | Published no typical figure for that size, and said why |
Each of these is linked to the exact page, and the date we checked it, wherever the figure appears. We link the page rather than naming the publisher, because twice the disagreement sits inside one publisher's own site.
What we do not know, and what would settle it
| The gap | What would close it |
|---|---|
| Regional prices outside London and the South East, the North West and West Scotland | Quotes from homeowners in those regions, or three installer price lists per region. This is the biggest gap we have |
| Bay Victorian and Bay Edwardian conservatory prices | Three matched installer quotes for the same footprint. No UK source publishes either, and both are styles installers actively sell |
| Bespoke conservatory prices | A named architect or maker publishing a rate against a stated specification. Two specialist sites whose URLs promise a cost page contain no price figures at all |
How we make money, and what we will not do to make it
When you request quotes, your details go to a lead partner who sells them to installers, and we are paid a share. That is the whole business model.
What happens to your details
- You see your estimate first. The phone number question comes last
- Up to four installers can quote you, and only if you ask for quotes
- Marketing consent is separate, unticked and optional
- No postcode is turned away. If you are outside the partner network we say so on screen, and you still get your estimate
What you get with every price
- A range and a typical figure, rounded. Never a single false-precision price
- How many sources sit behind it, and the date it was last checked
- Both sides of any disagreement between sources
- A plain note where we do not have a figure we trust
Sources we use, and how we grade them
| Tier | Who | Weight |
|---|---|---|
| 1 | Regulators and standards: LABC, Registered Building Control Approvers, Building Regulations Parts L, K and N | Highest |
| 2 | Manufacturers publishing first-party figures: Ultraframe, SupaLite, Guardian, Eurocell Equinox | High |
| 3 | National cost publishers: Checkatrade, MyJobQuote, MyBuilder, HomeHow, whatcost, ExpertSure | Medium |
| 4 | Installer and lead-generation pages, used only where nothing better exists | Capped at thin if undated |
| Not a source: AI-generated summaries with no named publisher, labelled as synthesis wherever quoted | Not counted | |
Prices last reviewed 20 August 2026. If a figure here is out of date or wrong,tell us and we will correct it and date the correction.
Now put your own numbers in
Six questions, about sixty seconds, and an estimate built from these figures with every source shown beside it.
Price my conservatory