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Renovation Cost Calculator

Get an instant estimate for your London renovation project. Select your project type and specification for indicative costs based on 2024 London prices.

Quick Cost Estimates (London 2024)

Extensions

  • single-storey rear (20m²): £40,000-£70,000
  • two-storey extension (40m²): £70,000-£120,000
  • Side return: £30,000-£55,000
  • Wrap-around: £65,000-£130,000

Conversions

  • Loft conversion (Velux): £30,000-£50,000
  • Loft conversion (Dormer): £40,000-£65,000
  • Basement conversion (40m²): £120,000-£240,000
  • Garage conversion: £8,000-£25,000

Room Renovations

  • Kitchen (budget): £8,000-£15,000
  • Kitchen (mid-range): £15,000-£30,000
  • Kitchen (luxury): £30,000-£70,000+
  • Bathroom (standard): £4,000-£7,000
  • Bathroom (luxury): £15,000-£35,000

Full House Renovation

  • 2-bed flat: £50,000-£100,000
  • 3-bed house: £80,000-£150,000
  • 4-bed house: £120,000-£250,000

Cost Per Square Metre

  • Extensions (budget): £2,000-£2,400/m²
  • Extensions (mid-range): £2,400-£3,000/m²
  • Extensions (high-end): £3,000-£3,500+/m²

What Affects Costs?

  • Location: Inner London typically 10-30% higher than outer London
  • Property type: Period properties often 10-20% more expensive
  • Specification: Materials and finishes significantly impact cost
  • Structural complexity: Complex projects increase costs
  • Access: Difficult access can add 5-15% to costs
  • Timing: Peak season may have higher rates

Get an Accurate Quote

For a detailed, itemised quotation specific to your project, contact Hampstead Renovations for a free consultation.

Phone: 07459 345456 | 020 8054 8756

Email: info@nwrenovation.co.uk

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