Sunroom extension cost

I am looking at adding a sunroom to the back of the house, something between a conservatory and a full extension. What kind of budget should we be looking at?

Asked by Cheryl on 12th May 2026
Expert Trade Answers
"Depends upon the quality of glass using and will normally costs around 4000 pounds including labour and excluding materials"
Answered on 19th May 2026 - Member since Apr 2026 - report
"Hi Cheryl ,
A rough guide price would be around £20k to £25k for 5mx4m."
Answered on 12th May 2026 - Member since Jun 2024 - report
"Your looking at around £28000 to £32000
Depending on bifolds or patio doors ect"
Answered on 12th May 2026 - Member since Feb 2022 - report
"A sunroom extension can vary quite a bit in cost depending on the specification, insulation levels, glazing, roof type, and whether it is being built more like a conservatory or a full extension. In most cases, homeowners are typically looking anywhere from around £15,000 for a simpler structure, up to £40,000+ for a higher-spec build with insulated foundations, large glazing systems, roof lanterns, heating, and full integration into the existing house. One of the biggest factors is whether the space is intended for year-round use, as this will affect the level of insulation, glazing, structural work, and building regulation requirements. Ground conditions, drainage, access, and how much structural alteration is needed to the existing property can also have a significant impact on the final cost."
Answered on 19th May 2026 - Member since May 2026 - report
"Well it all depends on your budget and what size you need it done . Depends on what budget you want to invest, Labour would be Roughly around £3500
Depending on size"
Answered on 12th May 2026 - Member since May 2024 - report
"You would be looking at around £35k. We would recommend you get a full survey done and you may need planning."
Answered on 12th May 2026 - Member since Apr 2026 - report
"Hi ,
Is depending how meter square you want to go with full extension but the price for meter is from 1800£-2400£."
Answered on 20th May 2026 - Member since Jun 2022 - report
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