Luxury House Builders in St John's Wood NW8

The cost depends on the size and complexity of the extension, the age and type of property, and the specification you choose. As a broad guide, a high-quality extension in St John’s Wood typically starts from around £100,000, with larger or more complex projects costing significantly more.

Conservation area rules and access constraints can also affect the cost. We recommend a site visit so we can provide an accurate figure for your home.

Basement costs depend on the depth and footprint of the excavation, ground conditions, waterproofing and the finishes chosen. As a guide, basement projects typically start from around £500 per sq ft, with cinema rooms, pools and gyms costing more. Every basement is different, so we always assess the property before quoting.

Yes. For most extensions, basements, renovations and new builds, detailed architectural drawings are essential. They set out exactly what will be built and are usually needed for planning applications and Building Regulations.

We’re happy to work with your existing architect or recommend professionals we trust. In St John’s Wood, good drawings matter even more, because planners will look closely at how the design affects the house and the wider street.

As a general guide, a high-quality full renovation can cost around £250–£450+ per square foot, while a more extensive luxury renovation with premium materials, bespoke joinery, structural alterations, new kitchens and bathrooms can exceed £500 per square foot.

For example, renovating a 2,000 sq ft property at £350 per sq ft would give an estimated construction cost of around £700,000, before any additional professional fees, planning costs or specialist works.

Every property is different, so we recommend arranging a site visit to assess the building and understand your requirements. We can then provide a detailed quotation based on the actual scope of work, rather than relying solely on a standard price per square foot.

A significant renovation or new build in St John’s Wood usually takes between 9 and 18 months, depending on the size and complexity of the project. Basement excavations can add to this.

Timescales are also affected by planning, Building Regulations, party wall agreements, material lead times and the level of interior finish. We agree a clear programme before work starts and manage it closely throughout.

Yes. We can help coordinate the planning process alongside your architect, planning consultant and other professionals.

Most of St John’s Wood is covered by Westminster City Council, with some streets in Camden. We make sure the correct borough’s policies are considered from the start, especially for basements, roof alterations and changes to front elevations.

Yes. A large part of St John’s Wood lies within a designated conservation area, and we regularly work on properties where additional heritage considerations apply.

We use appropriate materials and construction methods, and work closely with architects and heritage specialists so that changes respect both the property and the surrounding street.

For a standard householder application, councils generally aim to make a decision within 8 weeks of the application being validated. Larger applications, basement schemes and conservation area projects can take longer.

You should also allow time before submission for design development, surveys, structural reports and supporting documents, which can take several weeks or more.

If a planning application is refused, the first step is to understand why it was refused. We can work with your architect or planning consultant to review the decision and determine whether the plans can be amended to address the council’s concerns.

In some cases, making changes to the design and submitting a revised application may be the best option. In other circumstances, you may have grounds to appeal the decision. The right approach depends on the reasons for refusal and the details of the project.

Our aim is to identify potential planning issues as early as possible, helping to reduce the risk of delays and unnecessary costs before construction starts.

The time before the application is submitted should also be taken into account. Preparing drawings, developing the design, gathering supporting documents and addressing planning requirements can take several weeks or longer depending on the project.

We require a minimum deposit of 20% of the overall labour and materials upon the start of the project.

Payments for your house build are made in instalments, with a payment typically made every 2 weeks – which is carefully recorded on our logs.

According to Chancellors’ June 2026 market report, the average sale price across all properties in St John’s Wood over the previous 12 months was £838,549, or around £1,005 per square foot. That average is heavily weighted by flat sales; houses on the area’s best streets regularly sell for several million pounds.

With values this high, many homeowners choose to extend and renovate rather than move, adding space and value to a home in an area they already love.

Call us on 07850 763 556, fill in the form on our contact page, or email vzbuilders@hotmail.com. We’ll arrange a free site visit at your St John’s Wood home and come back with a detailed itemised quote within one working day of our visit.