Premium Builders in Hampstead
Exquisite extensions, bespoke renovations and meticulously crafted conversions for Hampstead's grand Georgian townhouses and period properties.
Trusted builders & construction firm in Hampstead
Hampstead represents the pinnacle of North London living — a rarefied enclave of elegant Georgian townhouses, stately Victorian villas and distinguished period residences set among the rolling expanses of Hampstead Heath. Within the London Borough of Camden, this internationally renowned neighbourhood demands construction work of the very highest calibre. Alstruct Ltd delivers an ultra-premium service tailored to the exacting standards of Hampstead's most discerning homeowners, combining heritage expertise with contemporary luxury.
The magnificent properties gracing roads such as Church Row, Well Walk, Fitzjohns Avenue and the exclusive Bishops Avenue command some of London's highest valuations, and investment in bespoke construction work must reflect this prestige. Alstruct specialises in the sensitive enhancement of Hampstead's architectural treasures — from meticulously restoring Georgian proportions and period detailing to creating breathtaking contemporary additions that sit harmoniously alongside historic fabric. Our portfolio encompasses luxury basement excavations, exquisite rear extensions, premium whole-house renovations and bespoke loft conversions, all executed with the finest materials and uncompromising craftsmanship.
With Hampstead station on the Northern line providing direct access to the City and West End, and the cultural richness of Hampstead Village at your doorstep, property here remains perennially desirable. Alstruct's specialist team navigates the complex planning landscape of Camden Council with confidence, including Listed Building Consent applications, conservation area negotiations and the sensitive handling of heritage assets. Every project benefits from our in-house architectural expertise, dedicated project management and an unwavering commitment to perfection.
Why Choose Alstruct in Hampstead?
- Specialists in listed buildings, Georgian townhouses and heritage properties
- Expert navigation of Camden Council planning and Hampstead Conservation Area
- CHAS Elite, Constructionline Gold & Federation of Master Builders certified
- Complimentary consultation with bespoke, comprehensive quotation
- Dedicated senior project manager for every premium project
- In-house architectural and structural engineering expertise
- Access to finest materials, specialist craftsmen and heritage tradespeople
- Proven track record with ultra-high-net-worth clients in NW3
Frequently Asked Questions — Hampstead
What does a luxury extension cost in Hampstead NW3?
Premium extensions in Hampstead NW3 command £3,500-£5,500 per square metre reflecting the area's ultra-prime status and the exacting specifications required. A bespoke rear extension for a Georgian townhouse averages £120,000-£200,000, while basement excavations and major structural projects can exceed £350,000. Alstruct provides complimentary consultations with meticulously detailed quotations for Hampstead's prestigious properties.
How do conservation area rules affect building in Hampstead?
Hampstead is predominantly covered by the Hampstead Conservation Area, one of the largest in the London Borough of Camden, with many properties also individually listed. Article 4 directions remove most Permitted Development rights, meaning virtually all external alterations require planning permission. Alstruct has deep expertise in Camden Council's heritage and design requirements, working closely with conservation officers to achieve approvals for luxury projects that enhance these architecturally significant properties.
Can you renovate a listed Georgian property in Hampstead?
Alstruct has significant experience renovating listed Georgian properties in Hampstead, including Grade II and Grade II* buildings. We understand the Listed Building Consent process through Camden Council, work with heritage consultants where required, and employ specialist craftsmen experienced in lime plaster, traditional joinery and period-appropriate techniques. Every renovation is meticulously planned to preserve architectural significance while introducing discreet contemporary luxury.
Do you undertake basement conversions in Hampstead?
Yes, basement conversions are highly sought-after in Hampstead where above-ground extension options are often limited by conservation restrictions. Alstruct delivers premium basement projects including swimming pools, home cinemas, wine cellars and multi-room living spaces. We manage all aspects including Camden Council's basement development planning policy, structural engineering, waterproofing and luxury interior fitout, typically completing projects in 20-40 weeks.
Luxury Construction in Hampstead
Extensions in Hampstead
Exquisite rear and side extensions for Georgian and Victorian properties, designed to complement heritage architecture with contemporary refinement.
Learn more →Loft Conversions in Hampstead
Premium mansard and dormer conversions creating opulent additional floors within Hampstead's grand period properties.
Learn more →Renovations in Hampstead
Comprehensive luxury renovations restoring Georgian elegance and Victorian grandeur while seamlessly integrating modern luxury throughout.
Learn more →Basement Conversions in Hampstead
Bespoke basement excavation creating premium subterranean spaces including pools, cinemas, wine cellars and multi-room living areas.
Learn more →Groundworks in Hampstead
Specialist foundations, underpinning and structural engineering for Hampstead's complex heritage and hillside construction projects.
Learn more →Landscaping in Hampstead
Bespoke garden design, premium natural stone terracing and elegant outdoor entertaining spaces befitting Hampstead's finest residences.
Learn more →House extensions in Hampstead
Hampstead has Georgian and Victorian houses around the Village and Flask Walk, Arts and Crafts houses towards Hampstead Garden Suburb, and large mansion flats along Finchley Road and in Belsize Park. Hampstead extensions are often lower-ground and basement projects, rear extensions with garden glazing, and orangery-style additions to the villas; every site is planned around the conservation area.
As a guide, a well-built single-storey rear or side-return extension in Hampstead costs around £2,500–£4,000 per m² including structure, glazing and finishes, so a typical 25–30 m² kitchen extension lands between £75,000 and £120,000. Our house extension cost guide explains what moves the price. Hampstead, Fitzjohns and Netherhall, and Belsize are conservation areas, and Camden Council applies a detailed basement policy and Article 4 directions. We confirm permitted development rights at the first visit and handle any application to Camden Council through our in-house design team.
Loft conversions in Hampstead
Hampstead roofs range from Georgian butterfly roofs with little space to Victorian villas with room for two loft rooms; mansards and rear dormers are agreed with the council's conservation officers.
In London a Velux conversion costs £25,000–£45,000, a dormer loft with a bedroom and en-suite £45,000–£75,000 and a mansard £60,000–£100,000+; our loft conversion cost guide sets out what is included. We survey the roof structure, head height and stair position before we quote a Hampstead loft, so the figure reflects the actual roof rather than an assumption.
Renovations and refurbishment in Hampstead
Hampstead projects are high-specification refurbishments of period houses and lateral flats, including apartment renovations in Belsize Park mansion blocks. Typical Hampstead refurbishments include structural openings with steel beams, new kitchens and bathrooms, rewiring, heating and period repairs such as sash windows, cornices and floors. Our Victorian terrace renovation cost guide gives realistic budgets, and every Hampstead project runs on a JCT contract with a written specification and our 10-year workmanship warranty.
Alstruct projects near Hampstead
Dunstan Road, Golders Green NW11
Rear extension, two-storey side extension and full renovation of a 1930s semi-detached house.
About 1.5 miles from Hampstead · View project →Whitehall Park, Archway N19
Full Victorian terrace renovation and rear extension with triple glazing and aluminium sliding doors.
About 2 miles from Hampstead · View project →Evelyn Road, Cockfosters EN4
Ground and first-floor extensions, new terrace, kitchen, bathrooms and full M&E upgrade.
About 6 miles from Hampstead · View project →Beyond the projects above, we have recent and current sites in W14, W6, N6, NW8, NW6, W11, W12 and N3 within about five miles of Hampstead, and we work across every London borough from our office in South Woodford, E18. See all completed projects →
We Also Cover Areas Near Hampstead
Common questions about building in Hampstead
Do Alstruct cover Hampstead?
Yes, Alstruct regularly works on extensions, renovations and loft conversions across Hampstead and surrounding London neighbourhoods. We visit, measure and provide a written quote.
How much does a house extension cost in Hampstead?
House extensions in Hampstead typically cost £50,000–£200,000+ depending on size, specification and the property's existing structure. Georgian and victorian townhouses are the most common build type in the area, and our quote will reflect the specific condition and layout of the property.
Do I need planning permission for an extension in Hampstead?
Hampstead sits in Hampstead Conservation Area, which means Permitted Development rights are restricted and most extensions require full planning permission from Camden Council. We handle the planning application, design drawings and party wall notices on your behalf.
What types of property do you work on in Hampstead?
Most Hampstead projects we deliver are on Georgian and Victorian townhouses. We have direct experience with the structural, compliance and aesthetic considerations specific to these property types, including listed building consent work where applicable.
How quickly can Alstruct start a project in Hampstead?
Once design and approvals are signed off, we typically start on site in Hampstead within 6–12 weeks depending on programme availability. Planning + design adds 8–16 weeks before site start. For urgent projects, get in touch on 020 8080 8240 to discuss timing.
Are you accredited to work in Hampstead?
Yes. Alstruct holds CHAS Elite, Constructionline Gold and Federation of Master Builders (FMB) accreditation, with £10M public liability insurance, JCT contracts as standard, and a 10-year workmanship warranty on every project — including all work in Hampstead.
Nearby areas we cover
Alstruct works across every London borough. Here are areas close to Hampstead with dedicated local pages: