Chelmsford house extension specialists. We design and build single-storey, double-storey and wraparound extensions with full project management and clear pricing. Free surveys.
Chelmsford has grown into one of Essex’s most sought-after places to live, and with that comes property prices that make extending a far smarter investment than moving. The stamp duty, estate agent fees, and solicitor costs involved in buying the next house up the ladder often cover half the cost of building the space you need onto the home you already have — keeping the location, the schools, the neighbours, and the commute that work for your family.
We design and build house extensions across Chelmsford, handling every stage from initial concepts and planning applications through to construction and finishing. Single storey rears that open onto the garden through bi-fold doors, double storey additions that add bedrooms above and living space below, side returns that widen a narrow kitchen, and wrap-around designs that maximise every available metre of footprint — we build them all and coordinate every trade involved in delivering a completed result.
Our service covers the full project. We manage groundwork, structural steelwork, bricklaying, roofing, carpentry, plastering, electrics, plumbing, flooring, and decoration. You deal with one team from the first foundation trench to the final finishing, with clear communication and transparent pricing throughout. Contact us to discuss extending your Chelmsford home.
A single storey extension is the most popular project we build across Chelmsford. It adds ground floor space for a larger kitchen-diner, a generous living area, a home office, or a ground floor bedroom without the cost and complexity of building upward. Under permitted development, you can typically extend three metres from the original rear wall for attached houses or four metres for detached properties without planning permission. Larger extensions up to six or eight metres are achievable through the prior approval process. We design single storey extensions that flood with natural light through bi-fold doors and skylights, creating bright, open rooms that connect your interior living space with the garden. The family housing across Springfield, Broomfield, and Great Baddow suits this treatment particularly well.
When you need space on both floors, a double storey extension delivers the most room for your investment. Building two storeys shares foundations, walls, and roof structure across both levels, costing significantly less per square metre than constructing the same area as separate single storey projects. The ground floor typically provides an enlarged kitchen-diner or living space while the first floor adds bedrooms, bathrooms, or an ensuite above. Double storey extensions require planning permission in most cases and need careful design to minimise impact on neighbouring properties. We design double storey additions that match the proportions, materials, and roofline of your existing Chelmsford home, ensuring the extension looks like a natural part of the property rather than an obvious bolt-on.
Many Chelmsford properties — particularly the Victorian and Edwardian terraces and semis around the city centre, Moulsham, and the older streets through Writtle — have narrow side passages that do nothing more useful than collect leaves and house the bins. Extending into this strip adds valuable width to your ground floor without consuming garden space. A side return transforms a cramped galley kitchen into a room with genuine space to work and live in. Combine it with a rear extension and you create a wrap-around design — an L-shaped addition that maximises the ground floor footprint in one coordinated project. Wrap-around extensions deliver the most dramatic transformations, often doubling the usable kitchen and living space in a single build.
The kitchen-diner extension is the single most requested project we build across Chelmsford. It combines a rear extension with removal of the internal wall between kitchen and dining room, creating one generous open-plan space for cooking, eating, and family life. The result fundamentally changes how the ground floor works — a bright, sociable room with space for a proper kitchen, a dining table, and often a sitting area, all flowing together and opening onto the garden through bi-fold or sliding doors. We handle the structural steelwork for the removed wall, the kitchen fitting, flooring, and all finishing trades to deliver a completed room. Kitchen-diner extensions across Chelmsford typically complete within ten to fourteen weeks from breaking ground to handover.
An extension is one of the largest investments most homeowners make in their property, and the builder you choose determines the quality of the result, the smoothness of the process, and whether the project finishes on time and within the budget agreed. We bring years of experience to every extension project, combining structural knowledge and quality craftsmanship with the kind of project management that keeps work moving without gaps, delays, or surprises.
We provide detailed, itemised quotes specifying exactly what’s included — groundwork, materials, labour, steelwork, scaffolding, building control fees, and all finishing. You know the cost before we start, and if anything changes during the build we discuss it openly before proceeding.
We build house extensions throughout Chelmsford and the surrounding Essex area, covering the city centre, Moulsham, Springfield, Broomfield, Great Baddow, Galleywood, Writtle, Chelmer Village, Boreham, Little Baddow, Danbury, South Woodham Ferrers, Maldon, and surrounding villages.
Create a warm, fully insulated garden room ideal for working, relaxing or exercising all year round. We design and build stylish outdoor offices, gyms and studios using high-quality materials and modern construction techniques. Quick to install and built to last, a garden room is one of the most effective ways to add extra usable space to your Basildon home.
Transform your unused attic into a bright and practical new living space. Whether you need an extra bedroom, home office or ensuite, our loft conversions include all structural work, insulation, electrics and finishing. We build Dormer, Velux and hip-to-gable conversions designed to maximise light, comfort and property value.
Expand your home with a beautifully built single-storey, double-storey or wraparound extension. From open-plan kitchens to larger living areas and additional bedrooms, we manage the entire process — foundations, structure, roofing, glazing and finishing. Our extensions are designed for long-term durability and seamless integration with your existing property.
Get expert advice on layouts, budgets, planning rules and build options for your Chelmsford home.