Award-Winning Design & Build in Edgware
LCCL Construction serves Edgware, Stanmore, Burnt Oak, Canons Park and the surrounding HA8 and HA7 areas from our base in Finchley N3 — a straightforward drive that puts us at most Edgware properties within 15 minutes. We have been transforming homes across this part of North London and into Harrow for over 20 years.
What sets LCCL apart from other builders in Edgware is simple: we do everything under one roof. Many homeowners in this area get separate quotes from an architect, a structural engineer, and a builder — three companies, three invoices, three sets of problems when communication breaks down. With LCCL, architecture, structural engineering, planning, construction and project management are all handled by one team. One comprehensive quote covers everything. No subcontractors you have never met. No surprise extras. No arguments about whose responsibility something is.
Why Edgware Homeowners Choose LCCL
Edgware sits across two borough boundaries — Barnet and Harrow — with different planning policies and expectations. Our architects submit to both councils regularly and know the differences.
LABC Building Excellence Award Winners 2024 — Independent industry recognition of our design and construction standards.
200+ Reviews Averaging 4.7/5 — Real homeowners who trusted us with their homes and were happy enough to recommend us publicly.
Dual-Borough Planning Experience — We submit applications to both Barnet and Harrow councils and understand their different policies and expectations.
Complete Design & Build Including Everything — Architecture, structural engineering, planning, all construction, project management, building control and a 10-year LABC warranty. Transparent pricing with no hidden extras. Final costs confirmed once designs and structural requirements are agreed.
Our Services
Design and build under one roof, Architecture, planning, construction, and finishing — managed by one team, from start to finish.
- HOUSE EXTENSIONS
House Extensions in Edgware
One of Edgware’s great advantages for homeowners considering an extension is plot width. The 1930s semis that characterise much of HA8 tend to have wider frontages and more generous side access than their inner London equivalents, creating scope for side extensions and wraparound additions that would be impossible on a narrow Victorian terrace.
The larger detached properties in Stanmore and Canons Park offer even more potential for substantial additions.
Extension Types We Build in Edgware
Single-Storey Rear Extensions — The most popular project across Edgware and Stanmore. Under permitted development, extend up to 6 metres for detached houses or 4 metres for semis and terraces without planning permission. Kitchen-diner extensions that completely open the ground floor to the garden. Costs: £50,000 to £85,000.
Side Extensions — Many Edgware semis have driveways or side passages wide enough to accommodate a ground-floor side extension, widening the house footprint significantly. Can add a separate utility room, downstairs WC, or expand the kitchen. Costs: £45,000 to £70,000.
Wraparound Extensions — Combining side and rear extensions for maximum ground-floor transformation. Particularly effective on the wider-fronted semis. Creates L-shaped or full-width living spaces. Costs: £75,000 to £115,000.
Double-Storey Extensions — Popular across Stanmore and Canons Park where growing families want both living space and bedrooms. Adds 40 to 60 square metres across two floors. Costs: £100,000 to £180,000.
What Is Included in Every Extension Quote
All prices include: in-house architectural design, structural engineering, planning applications to Barnet or Harrow Council as appropriate, all construction labour and materials, project management, building control via LABC, and a 10-year LABC warranty. No hidden extras. Transparent pricing. Final costs confirmed once designs and structural requirements are agreed. Call 020 8037 7332.
- LOFT CONVERSIONS
Loft Conversions in Edgware
The 1930s housing stock across Edgware and Stanmore is ideally suited to hip-to-gable loft conversions. The characteristic hipped roofs on most semis waste significant loft space where the roof slopes down toward the sides of the house — converting the hip to a vertical gable wall unlocks 30 to 40 percent more usable floor area, and the work usually qualifies under permitted development without needing planning permission.
For the larger detached properties in Stanmore and Canons Park, roof volumes are often generous enough for two-bedroom loft conversions that add a genuine additional storey to the house.
Loft Conversion Types for Edgware Properties
Hip-to-Gable Conversions — The most popular and effective choice for Edgware’s 1930s semis. Extends the hipped roof to a gable wall on one or both sides, combined with a rear flat-roof dormer for maximum space. Creates a spacious master bedroom with en-suite and often a small additional room or storage area. Costs: £50,000 to £72,000.
Rear Dormer Conversions — A simpler option suitable for terraces, semis and properties where a hip-to-gable is not appropriate. A flat-roof rear dormer adds headroom and floor space. Costs: £45,000 to £65,000.
L-Shaped Dormer Conversions — Combines rear and side dormers on semi-detached and end-of-terrace homes for maximum space. Two bedrooms or a master suite with dressing area. Costs: £55,000 to £75,000.
Mansard Conversions — The premium option replacing the entire roof structure. Creates near-full-height rooms with vertical walls. Always requires planning permission. Costs from £65,000.
What Is Included in Every Loft Quote
All prices include: in-house architectural design, structural engineering, scaffolding, all construction including steelwork and hip-to-gable or dormer build, new staircase, insulation, plastering, electrics, plumbing for en-suite, building control via LABC, project management, and a 10-year LABC warranty. No hidden extras. Call 020 8037 7332.
- RENOVATIONS
Renovations in Edgware & Stanmore
Much of Edgware’s housing was built in the 1930s when suburban living meant separate rooms for every function — a front lounge, a rear dining room, a small kitchen, a separate utility area. These homes are solidly built and generously proportioned, but their layouts do not suit how modern families live. The most common renovation request across HA8 is opening up the ground floor by removing the wall between the dining room and kitchen to create a single open-plan living, dining and cooking space.
Beyond layout reconfiguration, many 1930s Edgware semis still have original kitchens and bathrooms that are ready for comprehensive upgrading. Electrical wiring in properties of this age often needs complete replacement to meet current regulations. Heating systems may be inefficient and aging. These properties benefit from a holistic renovation that addresses structure, services and finishes together.
In Stanmore, the larger detached properties and those within the Canons Park area sometimes need full-scale refurbishment work — new kitchens, new bathrooms, replumbing, rewiring, new heating systems, and complete interior redecoration. For properties near the Canons Park Conservation Area, renovation work visible from the exterior may need to respect the local character.
Typical renovation costs in Edgware: kitchen renovation £25,000 to £55,000, bathroom renovation £12,000 to £25,000, ground-floor wall removal with RSJ £5,000 to £12,000, whole-house refurbishment from £80,000 upward. Every project comes with a detailed specification and comprehensive quote. Final costs confirmed once designs are agreed.
- ARCHITECTURE
In-House Architecture in Edgware
Edgware sits on the boundary between the London Borough of Barnet and the London Borough of Harrow, and knowing which council your property falls under is the first planning question that needs answering. Barnet and Harrow have different planning policies, different documentation preferences, and different expectations for householder applications. An architect who works primarily in one borough may not be up to speed on the other’s requirements.
LCCL’s in-house architects submit applications to both Barnet and Harrow regularly. We know which side of the borough boundary each Edgware street falls on, and we tailor applications accordingly. For properties near Stanmore, Harrow’s planning policies apply. For much of central Edgware and Burnt Oak, Barnet policies apply. Our architects navigate both with the same level of expertise.
Every Edgware project includes: measured survey, concept designs with floor plans and elevations, 3D visualisations, construction drawings, planning applications or LDCs to the correct council, structural engineering, and building regulations via LABC. All included in your quote — no separate architect fees.
- LOCA PLANNING EXPERTISE
Planning & Local Knowledge — Edgware
Conservation Areas in the Edgware Area
Canons Park Conservation Area (Harrow) — Covers the historic parkland and surrounding streets near the former Canons estate, including Canons Drive, Whitchurch Lane and parts of London Road. Properties within this area face restrictions on permitted development, particularly for visible alterations to front elevations and rooflines.
Little Common Conservation Area (Harrow) — Covers an area of Stanmore around Little Common and Stanmore Hill, protecting the village character. Stanmore Hill Conservation Area (Harrow) — Covers parts of Stanmore Hill and surrounding area with additional design scrutiny. Edgware High Street (Barnet) — While not a conservation area, the town centre has an Area of Special Character designation under Barnet’s Local Plan that may affect adjacent properties.
Permitted Development & Property Types
Outside conservation areas, standard PD rights apply across Edgware and Stanmore. Detached houses can extend up to 6 metres to the rear, semis and terraces up to 4 metres, without planning permission. Rear dormer loft conversions within volume limits also qualify. We recommend a Lawful Development Certificate to confirm eligibility.
Property Types: Edgware Centre — 1930s semis and terraces with good plot widths, hipped roofs ideal for hip-to-gable conversions. Burnt Oak — Predominantly interwar housing, originally council-built, with generous rear gardens and excellent extension potential. Canons Park — Larger 1930s semis and detached houses on generous plots. Stanmore — A mix of 1930s housing, substantial postwar detached homes, and some period properties near the old village centre.
Typical Project Timescales
Loft conversions: 8 to 12 weeks on site. Single-storey extensions: 10 to 14 weeks. Double-storey extensions: 14 to 20 weeks. Planning decisions: approximately 8 weeks for both Barnet and Harrow. Design and approvals phase: 8 to 12 weeks.
Party Walls
Most semi-detached and terraced extensions across Edgware and Stanmore involve party walls. The Party Wall etc. Act 1996 requires formal notification to neighbours. We manage all notices as part of every project.
Typical Planning Timescales
LDCs: approximately 8 weeks. Householder planning applications: approximately 8 weeks for both Barnet and Harrow. Prior approval: 42 days. Building control: inspections throughout construction, final sign-off at completion.
Building Control
All LCCL projects are managed through LABC building control. Inspections at each key stage ensure compliance with Building Regulations. At completion, you receive a building control completion certificate and optional 10-year LABC warranty.
Frequently Asked Questions
How much does a house extension cost in Edgware?
Rear extensions: £45,000 to £85,000. Wraparound extensions: £65,000 to £110,000. Double-storey extensions: £95,000 to £170,000. Side return infills: £35,000 to £55,000. All LCCL prices include architectural design, structural engineering, planning, construction, project management, and 10-year LABC warranty.
Do I need planning permission for extensions in Edgware?
Many extensions in Edgware qualify under permitted development rights. Single-storey rear extensions up to 6 metres (detached) or 4 metres (semi/terrace) can proceed without a planning application. Properties in Edgware Conservation Area or Canons Park have additional restrictions. We assess your property and advise on the best approach at your free consultation.
What type of loft conversion suits Edgware properties?
The 1930s and 1940s semis that dominate much of Edgware are ideal for hip-to-gable conversions combined with rear dormers. Terraced properties suit standard rear dormers. Larger detached homes around Canons Park can accommodate L-shaped or mansard conversions. We assess your roof space and property type and recommend the best option.
How long does a loft conversion take in Edgware?
Typically 8 to 12 weeks on site for a dormer or hip-to-gable conversion. Allow 8 to 12 weeks beforehand for design, structural calculations, and any approvals needed. We provide a detailed project timeline with your quote.
Is LCCL local to Edgware?
We are based in Finchley N3, approximately 15 minutes from Edgware. We have been working across the HA8 and HA7 areas for over 20 years. Unlike London-wide companies, we know the local housing stock, planning requirements, and council processes.
Areas We Cover
Based in Finchley N3, serving London and Hertfordshire.
North London and Hertfordshire
Barnet | Finchley | Hendon | Muswell Hill | Edgware | Enfield | Borehamwood | Potters Bar | Watford | St Albans
Across London
Hampstead | St Johns Wood | Islington | Kensington & Chelsea | Fulham | Clapham | Richmond | Putney & Wandsworth | Crouch End | Stoke Newington | Highgate | Ealing | Notting Hill | Camden | Queens Park