Full House Renovation Cost Guide for NW London

A full house renovation in NW London is a significant undertaking that typically requires comprehensive planning, professional coordination, and substantial budget allocation. Whether you're renovating a Victorian terraced home in Hampstead or a mid-century property in Primrose Hill, understanding total costs is essential.

Overall Project Costs

For a typical 3-4 bedroom property in NW London, full renovation costs typically range from £150,000 to £400,000+, depending on:

• Property age and condition
• Structural requirements
• Scope of interior redesign
• Material selections
• Professional fees

This translates to approximately £1,500-£3,500 per square metre on average, though cost per square metre varies significantly by specific requirements.

Major System Replacements

Electrical Systems represent a major cost component. Full rewiring typically costs £8,000-£15,000 for a 3-bed property. Modern houses require updated consumer units, new cabling throughout, and compliance with current building regulations.

Plumbing Systems usually cost £6,000-£12,000 for complete replacement. This includes new pipework, water treatment systems, and modern fixtures throughout all bathrooms and kitchens.

Heating and Cooling systems (boiler, radiators, controls) typically range from £5,000-£12,000. Energy-efficient systems cost more initially but reduce running costs significantly.

Structural Work costs vary dramatically. Underpinning costs £20,000-£50,000+. Roof replacement runs £8,000-£20,000 depending on size and material. For properties in conservation areas, structural work may face additional restrictions.

Interior Renovation Breakdown

Kitchen Renovation typically costs £15,000-£40,000. Quality cabinetry, appliances, and installation drive this cost in premium NW London locations.

Bathroom Renovation for multiple bathrooms adds £8,000-£25,000. See our bathroom renovation guide for detailed bathroom-specific costs.

Flooring throughout the property runs £8,000-£20,000 depending on material selection and property size.

Wall and Ceiling Work including plastering, decoration, and finishes typically costs £5,000-£12,000.

Extension Considerations

Many full renovations include extensions. A rear extension typically adds £25,000-£100,000+ depending on size and specification. Extensions require structural engineer costs and planning application fees.

Professional Fees

Full house renovations require multiple professionals:

• Architects: 5-15% of project cost (see architect fees guide)
• Structural engineers: £1,500-£4,000
• Building control: £500-£2,000
• Project management: 3-10% of budget for experienced coordinators

For period properties, additional specialists may be needed, increasing professional costs.

Party Wall Considerations

If renovation involves structural work near party walls, party wall costs add £1,500-£5,000 for surveyor fees and agreements.

Timeline and Contingency

Full house renovations typically take 4-8 months depending on complexity. Budget 15-20% contingency for unexpected issues discovered during work. In older Hampstead properties, discovering asbestos, outdated services, or structural issues is common.

Financing Your Project

Large renovation projects often require renovation finance beyond standard mortgages. Understanding funding options before starting is critical for project success.

We are an information and matching service, not a building contractor. For detailed project planning and cost estimates for your specific property, consult with qualified professionals. Visit https://architecthampstead.co.uk for architect recommendations or https://planninghampstead.co.uk for planning and conservation area guidance.

Start Your Planning

Before embarking on full renovation, develop a comprehensive renovation timeline and ensure you understand how to budget properly for all components of your project.