New Build Homes · London & Surrey
Rosace Design Studio creates new build homes in London and Surrey - contemporary in sensibility, enduring in quality. As specialist residential architectural designers, we manage every stage from feasibility and planning through to full interior specification.
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What We Do
Rosace Design Studio designs and builds new homes across London, Surrey, and the surrounding counties. We are both the architectural designer and the builder, which means your project is managed by one team from the first site visit through to the day you move in.
Building a new home is the most personal form of architecture. Every decision matters, from the orientation of the house on the site to the position of a kitchen window. Unlike extensions or conversions, a new build starts with a blank page, and that freedom demands both creative ambition and disciplined project management.
As experienced residential architectural designers, we take new build projects from initial feasibility through to handover. We assess the site, establish what is achievable within the planning framework, develop the design, manage the planning application, produce detailed construction drawings, and build the house with our own construction team.
We work on sites ranging from single plots in suburban London to larger residential developments in Surrey and the home counties. Our projects include demolition and rebuild schemes, infill sites, garden land developments, and conversions of commercial buildings into new residential homes.
Whether you have already purchased a site or you are evaluating one before committing, we can advise on feasibility, planning risk, and realistic build costs before you spend anything on a full design.
Featured New Build
A substantial contemporary new build in Cobham, Surrey - 455 sqm across two storeys plus a linked garage. Designed and delivered by Rosace from feasibility through to interior specification. Full planning permission secured at first submission.
Planning & Site Assessment
Every new build home requires full planning permission. Unlike extensions or loft conversions, there is no permitted development route for a new dwelling. The planning application must demonstrate that the proposed house is acceptable in terms of design, scale, massing, character, impact on neighbours, highways, drainage, ecology, and a range of other material considerations.
Before we begin the design, we carry out a thorough site assessment. This covers the local plan policies that apply to your site, the planning history of the plot and surrounding properties, flood risk, tree protection orders, ecological constraints, and access arrangements. On sensitive sites, we engage in pre-application discussions with the local planning authority to understand their position before investing in a full design.
Rosace Design Studio prepares and submits the planning application, including all supporting documents such as the design and access statement, heritage assessment where required, ecology reports, flood risk assessment, and transport statement. We handle all correspondence with the planning officer and attend committee meetings if the application is called in.
For demolition and rebuild schemes, we also manage the prior approval process for demolition and coordinate with the building control body on the demolition method statement.
Cost Guide
Build costs for new homes in London and the surrounding counties typically range from £2,500 to £4,500 per square metre in 2026. The wide range reflects the enormous variation in specification, site complexity, and location.
A mid-specification new build of around 200 square metres might cost between £500,000 and £700,000 for construction alone. This would include a well-insulated timber frame or masonry structure, good-quality kitchens and bathrooms, engineered timber flooring, and standard M&E installations.
High-end homes with premium finishes, underfloor heating throughout, smart home systems, bespoke joinery, stone or composite cladding, and landscaping can reach £5,000 per square metre or more. A 300 square metre luxury new build in Surrey or south-west London could cost upwards of £1.2 million for construction.
These figures cover construction only. Land acquisition is the largest additional cost and varies enormously by location. Professional fees for architecture, structural engineering, and project management typically add 12 to 18 percent of the build cost. Planning application fees, building regulations fees, party wall costs, and utility connections sit on top of that.
We provide detailed cost estimates at the design stage and work with quantity surveyors on larger projects to ensure budgets are realistic before construction begins. For a detailed walkthrough of the entire process, read our guide to building a new home in London from land to keys. Every new build project includes 3D visualisation so you can see the finished home before groundworks begin.
Cost Calculator
Tell us the size, location and finish level. Our calculator returns a realistic range for your extension or loft conversion, with a detailed breakdown available.
Design & Build
A new build home is the most complex type of residential project. It involves more consultants, more regulatory stages, and more decisions than any extension or conversion. The traditional model, where one firm designs the house and a separate contractor builds it, introduces a gap that causes delays, cost overruns, and finger-pointing when problems arise on site.
Rosace Design Studio eliminates that gap. We are both the design studio and the builder. Our design team creates the drawings, and our construction team builds from them. There is no handover between firms, no reinterpretation of the design, and no confusion over who is responsible when something needs resolving.
This model also means you get realistic cost guidance from day one. Our architectural designers design with buildability and budget in mind because they work alongside the people who will actually construct the house. The result is fewer surprises, tighter programmes, and a finished home that matches the design intent.
Coverage
Rosace Design Studio works across all of Greater London and within a 30-mile radius. We have completed new build projects in Surrey, including Cobham, Esher, and Weybridge, as well as London boroughs including Richmond, Wimbledon, Kensington, and Hampstead.
Outside London, we regularly take on new build projects across Hertfordshire, Essex, Kent, and Buckinghamshire. If you have a site within our coverage area, we would be happy to visit and assess its potential before you commit to anything.
How It Works
01
Feasibility
We visit the site, review planning policy, assess access and services, and give you an honest assessment of what is realistically achievable. This stage saves significant time and cost before committing to a full design.
02
Design & Planning
We develop the design through concept, sketch, and detailed stages, then prepare and submit the planning application with all supporting documents. We manage all communication with the local authority.
03
Technical Design
We produce building regulations drawings and coordinate all specialist consultants including structural engineer, M&E engineer, and sustainability assessor to create a fully coordinated technical package.
04
Construction
Our in-house construction team builds the house. We manage the programme, coordinate subcontractors, handle building control inspections, and keep you informed throughout. One team from start to finish.
Common Questions