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Our Services

Extensions

A house extension is a great way to expand your living space, increase property value, and enhance the functionality of your home

Whether you need additional bedrooms, a larger kitchen, or an open-plan

living area, our expert team at DJJ Projects can help design and build the perfect extension to suit your needs

 

We provide tailored solutions that seamlessly integrate with your existing home, ensuring a high-quality finish that complements your property’s architecture

Traditional extension on heritage building
beautiful extension in kitchen and living space

Types of home extensions

Rear Extensions

Extends the house into the back garden. Common for kitchens, dining rooms, or open-plan living areas. Ideal for homes with large backgardens.
Can be single-story (for extra living space) or double-story (for additional bedrooms or bathrooms)

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Side Return Extensions

Uses the narrow alleyway on the side of a house. Common for Victorian and Edwardian homes that have small side passages.
Great for expanding kitchens or creating a larger open-plan living area. Can be combined with a rear extension for an L-shaped wraparound extension.

Heritage 5

Wrap Around Extensions

Combines a rear and side return extension. Maximises space and allows for a complete transformation of the ground floor.
Often used for large open-plan kitchens, dining, and lounge areas.
Requires structural work but offers

a significant increase in floor space

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Double Storey Extensions

Adds space on both the ground and first floors. Can add extra bedrooms, bathrooms, or an office upstairs.
Maximises space and increases property value.
Typically requires planning permission

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We’ve completed a wide range of house extensions over the years, each one designed and built with care to add space, value, and comfort to our clients’ homes. From initial planning to the final finish, we manage every stage with precision and professionalism. Our experienced team ensures a smooth process, and customers are often amazed at how seamlessly the new space blends with the original home. The below show just a few of the many extensions we've delivered — each one tailored to suit the needs and style of the homeowner

Key Stages of a Home Extension

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Structural Assessment & Site Preparation: Our team conducts surveys to assess the existing foundations and prepare the site for construction, including clearing and excavation if required

Foundation & Structural Work: The foundation is laid, and structural components such as walls, roofing, and load-bearing elements are constructed

Plumbing, Electrical & Insulation Installation: Essential systems, including plumbing, wiring, and high-quality insulation, are installed to ensure efficiency and comfort.

 

Windows, Doors & External Finishes: We install secure, energy-efficient windows and doors, along with exterior finishes that match your home’s aesthetics

Flat plan for kitchen extension

Roof & Floor Reinforcement: Strengthening the existing floor and roof to support the additional space and ensure long-term durability

Installation of Windows & Insulation: Adding Velux or dormer windows for natural light and installing high-quality insulation for energy efficiency

Electrical, Plumbing & Heating Work: Fitting essential services such as lighting, sockets, radiators, and plumbing where necessary

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Kitchen extension almost finished
technical building plans for extension

03

Interior Fit-Out & Customisation: Walls are plastered, flooring is laid, and bespoke fixtures and fittings are installed to meet your design preferences

Final Inspection & Quality Assurance: We conduct thorough quality checks, ensuring all work meets safety and building standards before the final handover

Project Completion & Handover: Once approved, we hand over your beautifully extended home, ready for you to enjoy

technical building plans
finished kitchen and living space extension
  • How long does a new build take?
    A new build in the UK typically takes 5 to 7 months to complete, though this can vary depending on factors like build complexity, site location, & planning permission. In total, from start to finish, building a new home can take anywhere from 9 to 18 months, including pre-planning & potentially finding a suitable site. Here's a more detailed breakdown of the timeline: 1. Pre-Planning & Site Preparation (Variable): This stage can take anywhere from a few months to a year or more, depending on factors like finding a suitable plot, obtaining planning permission, & site preparation 2. Build Phase (9-15 months): The actual construction of the house typically takes between 9 & 15 months, with an average of around 12 months 3. Completion & Move-in: Once the build is complete, there's a period of time before you can actually move in, which can vary from a few weeks to a month or more. This includes things like final checks, connecting utilities, & potentially dealing with any remaining issues
  • Do I need planning permission?
    General Rule: The basic principle is that any "development" requires planning permission, & building a new house is considered a development Exceptions: There are some situations where planning permission might not be required, such as small detached buildings (like garden sheds) that meet specific size & height criteria Local Policies: Local planning authorities have their own specific policies & guidelines, so it's crucial to check with yours to understand their requirements for new builds in your specific location Permitted Development: Some types of development are "permitted development," meaning they don't require planning permission. However, even if your new build falls under permitted development, you might still need to apply if your property has restrictions on its permitted development rights Building Regulations: In addition to planning permission, you will likely also need to obtain building regulations approval for your new build, as this relates to safety & construction standards Neighbour Consultation: In some cases, especially for larger extensions or new builds, local authorities may also require a neighbour consultation process before granting planning permission
  • What warranties do you provide?
    Despite the property being new, it's still possible to experience some structural defects due to faulty materials or workmanship A new build warranty – which is taken out by the developer – protects the new owner for 10 years, and covers any defects found once the buyers move in A building or structural warranty is essentially an insurance policy for newly built homes It's almost impossible to sell a home without one as all mortgage lenders require a 10 year structural warranty DJJ Projects Ltd work with London Belgravia Group that will provide quotes across the warranty providers to suit all budgets and specifications
  • How do payments and contracts work?
    In new build projects, payments are typically structured around a deposit upon exchanging contracts, & staged payments as construction progresses The contract outlines the total cost, payment schedule, & how progress will be valued Contract Terms: The contract must clearly outline the payment schedule, including payment methods, due dates, & any penalties for late payments In a new build project, contracts primarily govern the relationship between the client & the developer, & the developer & the builders They establish the terms of the agreement, outlining responsibilities, timelines, & financial obligations Essentially, contracts are legally binding agreements that protect both parties throughout the construction & purchase process

Get an estimate for your upcoming project

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