End-to-End Residential Expertise
Turnkey Residential Building Services
From foundation excavations to high-end architectural joinery, GN Developers provides turnkey structural building solutions for private homeowners, landlords, and property investors throughout Greater London and the Home Counties.
01
House Extensions (Rear, Side & Wrap-Around)
Expanding your ground-floor living footprint is the most cost-effective method to achieve modern open-plan living while substantially increasing the market value of your property. GN Developers handles every phase of domestic extension work, whether operating under Permitted Development rights or full Local Authority Planning Permission.
Single-Storey Rear Extensions
Extend up to 6m (semi-detached) or 8m (detached) under Prior Approval schemes to create expansive kitchen-living-dining rooms opening to the garden.
Side-Return Extensions
Reclaim unutilised passageways in Victorian and Edwardian properties, straightening interior walls to double your kitchen width.
Wrap-Around Extensions
Combining rear and side-return extensions into a cohesive L-shaped layout that completely reconfigures the ground floor.
Double-Storey Extensions
Add substantial square footage to both floors—accommodating additional first-floor bedrooms, en-suites, and dressing rooms.
Technical Delivery Scope:
Extension Project Feasibility
Typical Duration:
12 - 18 Weeks
Planning Route:
Permitted Dev / Full Planning
Warranty Included:
10-Year Structural Guarantee
Party Wall Support:
Notices & Surveyor Coordination
02
Loft Conversions (Dormer, Mansard & Hip-to-Gable)
Convert unused attic volume into functional living space. Whether creating a master bedroom suite with a luxury shower room or an executive home office, our loft conversion teams ensure optimal headroom, compliance with fire safety regulations, and weatherproofing.
Rear Dormer Conversions
The most popular UK conversion type. Extends vertically from the slope of the existing roof to maximise usable floor space and ceiling height.
Hip-to-Gable Conversions
Ideal for end-of-terrace and semi-detached properties with hipped roofs, replacing the sloping roof with a vertical brick gable wall.
Mansard Conversions
An aesthetically elegant conversion that alters the entire roof structure at a 72-degree angle, commonly favoured in conservation areas.
Velux Rooflight Conversions
Cost-effective conversions that retain the original roof line, installing premium Velux roof windows without requiring structural exterior changes.
Technical Delivery Scope:
Loft Project Feasibility
Typical Duration:
12 - 18 Weeks
Min Ridge Height Needed:
2.2 Metres
Planning Route:
Permitted Dev (up to 40mÂł/50mÂł)
Building Control:
Full Plans Sign-Off
03
Complete House Refurbishments & Structural Alterations
We deliver full-scale residential refurbishments—from back-to-brick strip-outs to structural load-bearing wall knock-throughs. Our multi-trade teams coordinate electrical rewiring, central heating design, damp-proofing, plastering, and high-end decorating under a single, unified point of contact.
Load-Bearing Wall Removals
Structural calculations, temporary Acrow propping, and steel beam (RSJ) insertions to connect disjointed ground-floor rooms.
Full MEP Infrastructure Upgrades
Complete Part P rewiring, fuse board upgrades, unvented hot water cylinders, and modern multi-zone heating installations.
Insulation & Damp Proofing
Sub-floor ventilation, chemical damp-proof courses (DPC), acoustic floor insulation, and internal drylining.
Internal Joinery & Finishes
Custom internal doors, bespoke skirting and architraves, herringbone wood flooring, and flawless multi-coat plastering.
Refurbishment Scope
Typical Duration:
12 - 24 Weeks
Trade Management:
100% In-House Supervision
Certification:
NICEIC & Gas Safe Certificates
Waste Disposal:
Licensed Skip & Waste Transfer
04
New Builds & Ground-Up Residential Developments
GN Developers acts as main contractor for ground-up domestic developments, bespoke individual family residences, and multi-unit residential schemes. From initial soil testing and site remediation to structural brickwork and final commissioning, we execute developments with commercial-grade precision.
Ground-Up Capabilities:
New Build Execution
Project Scale:
Single Homes & Small Schemes
Contracts Used:
JCT Standard / Minor Works
Health & Safety:
CDM 2015 Compliant
Stage Payments:
Valuer / Lender Milestone Aligned
05
Architectural Design, Structural Engineering & Planning
Do not have drawings yet? We provide a concept-to-completion service. Our associated architectural technicians and structural engineers create precise CAD floor plans, 3D visualisations, building regulations specifications, and structural calculation packages.
Planning Applications
Lawful Development Certificates (LDC), full householder planning submissions, design & access statements, and council liaison.
Structural Calculations
Chartered engineer calculations for structural beams, padstones, timber sizes, and foundation depths required for building control approval.
Design Package Inclusions
06
Luxury Kitchen Fitting & Master Bathroom Fit-Outs
The focal point of any home extension or refurbishment is the final interior execution. We provide dedicated installation services for high-end bespoke kitchens, quartz/granite worktops, wet rooms, and boutique bathroom sanctuaries with millimetre-accurate joinery and plumbing.
Kitchen Installations
Bespoke cabinetry installation, waterfall stone island fabrication, integrated appliance connections, and ambient LED profile lighting.
Luxury Bathrooms & Wet Rooms
Tanked waterproofing membranes, concealed cistern frames, walk-in frameless glass showers, underfloor heating, and large-format porcelain tiling.
Fit-Out Standards
Tiling:
Porcelain, Marble, Microcement
Plumbing:
Concealed Thermostatic Systems
Electrics:
Smart Lighting & Extractor Systems
Warranty:
2-Year Workmanship Guarantee
