South East cost hub

Home Improvement Costs in Brighton

Modelled home-improvement planning costs for Brighton using our South East regional factor.

Data review: 1 September 2026 · South East model · 21 benchmark projects

Regional model1.15× baseline
Price basis2026 UK benchmarks
These figures are modelled planning ranges, not observed city-wide averages or contractor quotes. National benchmark ranges are adjusted by the UK Home Costs regional factor and rounded for budgeting.

Typical planning ranges in Brighton

House renovation£50,050–£126,900
House extension£2,050–£3,450 / m²
Loft conversion£40,250–£97,750
Garage conversion£720–£1,450 / m²
Kitchen renovation£6,050–£32,650
Bathroom renovation£6,300–£16,100
Roof replacement£4,600–£20,700
Flat roof replacement£60–£130 / m²
House rendering£30–£90 / m²
External wall insulation£170–£230 / m²
House rewire£4,600–£13,800
Boiler replacement£2,900–£6,300
Solar panels£5,750–£10,350
Plasterboard installation£20–£40 / m²
Fence installation£80–£170 / m timber
Driveway£70–£140 / m²
Patio£70–£550 / m²
Scaffolding£20–£30 / m²
Electrician labour£50–£70 / hour
Builder labour£460–£460 / day
Plumber labour£50–£70 / hour

What the South East factor means

Our 1.15× regional model places this planning table 15% above the national planning baseline. That percentage is a UK Home Costs modelling assumption applied consistently to the national benchmark table; it is not presented as an externally measured city-wide price index.

Planning considerations in Brighton

  • Exterior specifications may need more attention where a property is exposed to coastal weather and salt-laden air.
  • Tight street access or controlled parking can change waste, scaffold and delivery logistics even when the underlying project is unchanged.
  • Check listed-building or conservation constraints before assuming a standard window, roof, rendering or extension specification.

How to use these figures

Coastal exposure, conservation areas, parking and restricted access can affect individual quotations beyond the broad South East planning model.

Start with the table to understand project scale, then use a calculator to add floor area, condition, finish level and other project-specific inputs. A postcode-aware calculator can infer the same broad region while still allowing a manual override.

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