How long does a typical home extension take?

Most single-story extensions take 8-12 weeks from start to completion, depending on size and complexity. We provide detailed timelines during our initial consultation.

Do I need planning permission for a home extension?

Many extensions fall under permitted development rights, but this depends on your property type and extension size. We help assess requirements and handle planning applications when needed.

Are you fully licensed and insured?

Yes, we are fully licensed with £2 million public liability insurance. All our tradespeople are qualified professionals and members of relevant trade associations.

How much do home extensions cost in London?

Home extension costs vary depending on size, complexity, and finishes. Single-storey extensions typically range from £15,000-£30,000, while double-storey extensions range from £30,000-£60,000. We provide detailed quotes after consultation.

Do I need planning permission for my extension?

Many extensions fall under permitted development rights, but this depends on your property type, location, and extension size. We help assess your requirements and assist with planning applications when needed.

How long does a typical home extension take?

Project timelines vary by scope. Single-storey extensions typically take 8-12 weeks, while double-storey extensions take 12-16 weeks. We provide detailed project schedules during planning.

Are Vine Construction fully insured and certified?

Yes, we are fully insured with public liability insurance up to £2 million. All our tradespeople are qualified professionals, and we're members of relevant trade associations.

Expert Building Services in London

Vine Construction is London's trusted building contractor with over 15 years of experience in home extensions, loft conversions, and property renovations. We serve all areas of London including Kensington, Chelsea, Mayfair, Belgravia, and Knightsbridge.

Our Services Include:

Home Extensions - Single and double story extensions
Loft Conversions - Convert your loft into usable space
Kitchen Extensions - Expand your kitchen and dining areas
Basement Conversions - Underground space conversions
Bathroom Renovations - Complete bathroom refurbishments
Roofing Services - Repairs, replacements, and maintenance

Why Choose Vine Construction?

We are fully insured with £2 million public liability insurance, hold all necessary licenses, and maintain a 4.9-star rating from over 42 customer reviews. Our team of qualified tradespeople delivers high-quality workmanship with guaranteed results.

Service Areas

We provide building services throughout London including: Kensington, Chelsea, Mayfair, Belgravia, Knightsbridge, Notting Hill, Hampstead, Islington, Camden, Fulham, Wandsworth, Richmond, Wimbledon, South Kensington, Fitzrovia, Marylebone, and surrounding areas.

Contact Information

Phone: 0207 060 1579

Email: info@vineconstruction.com

Hours: Monday-Friday 8:00 AM - 6:00 PM

Luxury London kitchen extension by Vine Construction

Est. 2008 — London

London's Premier Builders for Period Renovations & Luxury Extensions

Crafting exceptional homes in Kensington, Chelsea, and Mayfair for over 15 years.

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Fully Insured

20+ Years Experience

5-Star Rated

500+

Projects Delivered

20+

Years Experience

100%

Client Satisfaction

5.0

Star Rating

About Vine Construction

London's Most Trusted Residential Builder

Since 2008, Vine Construction has been the builder of choice for London's most discerning homeowners, architects, and property professionals. We combine traditional craftsmanship with modern project management to deliver exceptional results on every project.

Our team includes qualified builders, electricians, plumbers, and dedicated project managers who work together to ensure every project meets our exacting standards — from initial consultation through to final handover and beyond.

Whether you're planning a contemporary glass extension, a sensitive heritage restoration, or a complete whole-house renovation, we approach every project with the same commitment to quality, transparency, and client satisfaction.

Fully Insured

Comprehensive public liability coverage up to £2 million on every project we undertake.

Expert Craftsmen

Qualified tradespeople with deep expertise in period properties and contemporary design.

Quality Guaranteed

Comprehensive warranties and Building Regulations sign-off on all completed works.

On-Time Delivery

Detailed project programmes with dedicated project management from start to finish.

Our Expertise

Project Spotlight

Three decades of collective expertise across London's most demanding residential projects, from contemporary glass extensions to meticulous period restorations.

Luxury glass-box extension on a London Victorian townhouse by Vine Construction

Glass-Box & Wrap-Around Designs

Luxury Extensions

Our luxury extension portfolio showcases the very best in contemporary residential architecture across London's most prestigious postcodes. From striking glass-box rear extensions that seamlessly connect indoor living with private gardens, to sophisticated wrap-around designs that dramatically increase floor space while maintaining the architectural integrity of period properties. Every extension we deliver is a bespoke creation, developed in close collaboration with leading architects and structural engineers. We specialise in navigating the complex planning requirements of conservation areas in Kensington, Chelsea, and Mayfair, ensuring your extension not only meets but exceeds Building Regulations standards. Our team brings unrivalled expertise in structural steelwork, thermally broken glazing systems, and precision brickwork matching, creating extensions that add genuine value to your property while transforming how you live. Whether you envision a minimalist glass pavilion or an elegant orangery with heritage detailing, we deliver craftsmanship that stands the test of time.

Luxury basement conversion with ambient lighting in London by Vine Construction

Subterranean Luxury & Master Suites

Loft & Basement Conversions

London's most discerning homeowners are increasingly looking below ground for additional luxury living space. Our basement conversion specialists transform unused cellars and sub-floor voids into extraordinary subterranean environments — from private cinema rooms and wine cellars to fully equipped gyms, staff quarters, and self-contained guest suites. Our loft conversions are equally transformative, creating expansive master bedroom suites with en-suite bathrooms, walk-in wardrobes, and flood-lit skylights that bring natural light deep into the heart of your home. We work extensively with mansard, dormer, and hip-to-gable designs, each tailored to the specific character of your property and the requirements of your local planning authority. Every conversion project is underpinned by rigorous structural engineering, specialist waterproofing systems (for basements), and meticulous attention to sound insulation, ventilation, and fire safety. The result is living space that feels entirely natural — as though it was always part of the original design.

Victorian townhouse heritage restoration in London by Vine Construction

Victorian & Georgian Preservation

Heritage Restorations

London's architectural heritage is one of the world's great treasures, and our heritage restoration team is dedicated to preserving and enhancing it for future generations. We specialise in the sympathetic restoration of Grade I, Grade II, and Grade II* listed buildings, working closely with conservation officers and heritage consultants to ensure every intervention respects the original fabric of the building. Our craftsmen are skilled in traditional lime plastering, ornamental cornicing, sash window restoration, period-appropriate joinery, and the careful repair of historic brickwork and stonework. We source authentic materials wherever possible and employ time-honoured construction techniques to maintain the provenance and character that makes these buildings so exceptional. Whether you are restoring a Georgian townhouse in Mayfair, a Victorian villa in Hampstead, or an Edwardian mansion in Kensington, we bring the expertise, sensitivity, and craftsmanship needed to honour the building's history while discreetly integrating modern comforts — from underfloor heating to smart home technology.

Where We Work

The London Postcode Hub

Deep local knowledge across London's most prestigious neighbourhoods. We understand the planning nuances, architectural heritage, and exacting standards of each area.

Mayfair

Full restoration of a five-storey Georgian townhouse on Mount Street, including bespoke joinery and smart home integration.

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Chelsea

SW3

Contemporary rear extension with structural glass to a Grade II listed terrace on Cheyne Walk, with basement wine cellar.

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Kensington

Mansard loft conversion and complete interior renovation of a Victorian villa near Holland Park.

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Hampstead

NW3

Two-storey side extension and landscape redesign for a heath-side Edwardian residence.

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Clapham

SW4

Open-plan kitchen-diner extension with bi-fold doors and underfloor heating for a Georgian townhouse.

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Islington

Full refurbishment of a three-bed Georgian terrace including loft conversion and bespoke kitchen.

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Wandsworth

SW18

Wrap-around extension and complete renovation of a Victorian terrace near Wandsworth Common.

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Belgravia

SW1

Embassy-standard renovation of a stucco-fronted Belgravia mansion with period-accurate detailing.

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Expertise & Authority

Why London's Architects Trust Us

We combine deep technical knowledge with creative sensitivity, making us the contractor of choice for leading London architecture practices.

Architectural Collaboration

We work as an extension of your design team. Our project managers and site foremen read technical drawings with precision, attend design meetings, and proactively flag buildability issues before they become costly problems on site.

From RIBA Stage 4 through to practical completion, we maintain rigorous quality control with detailed photographic records, weekly progress reports, and transparent cost tracking. Our clients include several RIBA award-winning practices who trust us to realise their most ambitious residential designs.

Planning Permission Expertise

Navigating London's planning landscape requires deep local knowledge. We have extensive experience working within Conservation Areas, Article 4 Directions, and Listed Building Consent requirements across RBKC, Westminster, Camden, and Wandsworth.

Our pre-application consultation service helps you understand what's achievable before you invest in full architectural drawings. We work with planning consultants who have established relationships with local authority officers, maximising your chances of a successful outcome.

Specialist Partnerships

We maintain a curated network of specialist sub-contractors and partner services to ensure every aspect of your project is handled by genuine experts. From structural glazing to bespoke metalwork, we connect you with the best in the industry.

Secondary Glazing for Period Homes

In many of London's listed buildings, replacing original windows simply isn't an option. Our specialist partner provides premium secondary glazing solutions that deliver up to 80% noise reduction and 30% improved thermal efficiency — all without altering your historic sash windows or affecting your building's listed status.

Heritage Alternative

Preserve Your Period Windows

Conservation-compliant secondary glazing that protects your heritage while delivering modern comfort.

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Our Process

From Vision to Reality

A transparent, structured approach that gives you confidence and control at every stage of your project.

Step 1

Consultation

We visit your property, listen to your vision, assess the site, and discuss budget and timeline expectations. This initial meeting is complimentary and confidential.

Step 2

Detailed Quoting

You receive a comprehensive, line-by-line quotation with no hidden costs. We include a full specification, material selections, and a projected programme of works.

Step 3

Project Management

Your dedicated project manager coordinates all trades, secures necessary approvals, and provides weekly progress reports with photographic documentation.

Step 4

The Build

Our skilled craftsmen execute the works with precision, respecting your home and neighbours. Rigorous quality control at every stage ensures exceptional results.

Step 5

Handover

Final snagging, deep clean, and a thorough walkthrough. You receive all warranties, compliance certificates, and a comprehensive handover pack for your records.

Portfolio

Selected Works

A curated selection of residential and commercial projects across London.

SW3

Glass-Box Extension, Chelsea

Georgian Townhouse Restoration, Mayfair

Basement Cinema Room, Kensington

NW3

Victorian Villa Renovation, Hampstead

EC2

Boutique Office Fit-Out, Shoreditch

E14

Penthouse Refurbishment, Canary Wharf

SW1

Listed Building Repair, Westminster

W1T

Restaurant Renovation, Fitzrovia

SW18

Wrap-Around Extension, Wandsworth

5-Star Customer Reviews

Trusted by London Homeowners

4.9 / 5· 120+ verified reviews

Real feedback from clients across Kensington, Chelsea, Mayfair, Belgravia and beyond.

"From the first site visit to handover, Vine Construction delivered our Kensington rear extension to an exceptional standard. The crittall glazing and oak detailing are flawless — neighbours stop to ask who built it."

"A meticulously run basement dig under our Mayfair townhouse. Engineering, waterproofing and finishes were all handled in-house. We now have a cinema, gym and wine room that feel original to the building."

"Vine restored our Grade II Georgian facade using genuine lime mortar and salvaged stock bricks. The conservation officer was visibly impressed. True craftsmen who understand period properties."

"Our loft conversion in Hampstead was finished a week ahead of schedule and on budget. The dormer, ensuite and bespoke joinery transformed our home. Clear communication every single day."

"We interviewed five contractors for our Chelsea refurbishment. Vine were the only firm that surveyed properly before quoting. The result is a beautifully detailed family home — worth every penny."

"Sash window restoration across 14 openings on our Notting Hill terrace, plus secondary glazing for acoustic insulation. Originals saved, draughts gone, street noise eliminated. Faultless work."

Client Testimonials

What Our Clients Say

"Vine Construction transformed our Chelsea townhouse with a stunning rear extension that seamlessly blends contemporary glass with Victorian brickwork. Their attention to detail and project management were truly exceptional."

Sarah Thompson

Rear Extension & Renovation — Chelsea, SW3