The Kitchen Extension Your Family Deserves
The kitchen is the heart of every home, yet in so many Milton Keynes properties it's the one room that feels too small. A kitchen extension changes everything — giving you the space to cook, eat, and live together in one bright, open-plan room.
At Spectra Extensions, kitchen extensions are one of our most popular projects. Whether you're extending to the rear, to the side, or wrapping around both, we create spaces that feel natural and connected to your existing home. Our premium brick slip finishes match your property seamlessly, and with RADIX screw pile foundations, your new kitchen-diner can be ready in just 4-5 weeks.
Modern Open-Plan Kitchen Living
The way we use our kitchens has changed dramatically. They're no longer just a place to prepare food — they're where families gather, children do homework, friends share a glass of wine, and everyone congregates during parties. A kitchen extension gives you the room to embrace this modern way of living.
Open-Plan Kitchen-Diners
Remove the wall between your kitchen and dining room, then extend to create one generous, flowing space. Cook while the family eats, entertain while you prepare — everyone's together.
Kitchen Islands
An island is the centrepiece of any modern kitchen, but you need space for it. A kitchen extension gives you room for a generous island with seating, storage, and even an integrated hob or sink.
Glazed Doors and Skylights
Bi-fold doors, sliding doors, or French doors flood your kitchen with natural light and open directly onto the garden. Add skylights for even more daylight in the heart of the room.
Family Living Zones
A well-designed kitchen extension creates distinct zones within one open space — cooking area, dining area, and a softer seating zone for relaxing. One room, multiple uses.
Designing Your Kitchen Extension
A kitchen extension isn't just about adding square metres — it's about designing a space that works for how your family actually lives. We consider every detail during the design phase to ensure your new kitchen is practical, beautiful, and built to last.
Layout and Flow
The relationship between your hob, sink, and fridge (the kitchen triangle) is just as important in an extended kitchen as in a compact one. We design layouts that keep everything within easy reach while giving you the generous worktop space and storage you need. Whether you prefer a galley layout, L-shape, U-shape, or an island configuration, the extension is designed around your preferred kitchen style.
Connecting Old and New
The transition between your existing home and the new extension should feel seamless. We carefully design the opening between old and new — whether that's a wide structural opening, a full wall removal, or a subtler connection. Floor levels, ceiling heights, and finishes are all considered so the extension feels like a natural part of your home, not a bolt-on addition.
Services and Utilities
Relocating or extending plumbing, electrics, gas, and drainage is a standard part of any kitchen extension. Our engineers plan all services from the outset, including waste runs, boiler repositioning if needed, and electrical circuits for islands, ovens, and integrated appliances. Everything is mapped onto your drawings before the price is confirmed.
Heating and Comfort
A large, open-plan kitchen-diner needs proper heating design. We factor in underfloor heating, radiator repositioning, or additional zones to ensure your new space is comfortable year-round. Our extensions achieve excellent thermal performance, keeping heating costs low even with large glazed areas.
A Seamless Match with Your Existing Property
One concern many homeowners have is whether the extension will look right next to their existing house. With Spectra, it's not a concern — it's a guarantee.
Our premium brick slips are selected to match your existing brickwork as closely as possible, including brick colour, texture, and mortar profile. The roofline, fascias, and soffits are designed to complement your existing property. From the outside, your kitchen extension will look like it has always been there. From the inside, it will feel like you've moved into a much bigger house.
Popular Kitchen Extension Layouts
Rear Kitchen Extension
The most common approach. Extend the full width of the house to the rear, typically 3-4 metres deep, to create a generous kitchen-diner with bi-fold doors opening onto the garden. Ideal for families who want to combine cooking and dining in one bright, open space.
Learn more about rear extensions →Side Kitchen Extension
Extend to the side to widen a narrow kitchen. This works particularly well on semi-detached homes where the kitchen currently runs front-to-back. Widening by even 2-3 metres transforms the layout and gives room for an island or breakfast bar.
Learn more about side extensions →Wraparound Kitchen Extension
Combine rear and side extensions for maximum impact. A wraparound extension creates the most generous kitchen-diners, with space for a large island, dedicated dining area, and a seating zone — all with views out to the garden through full-height glazing.
Kitchen Extension Timeline
A typical Spectra kitchen extension follows this timeline:
From first contact to cooking in your new kitchen, the entire process typically takes around 10-12 weeks. The build itself is just 4-5 weeks — dramatically faster than the 3-6 months a traditional build can take.
Kitchen Extension Costs
Every kitchen extension is designed to your specific requirements, so costs vary based on size, specification, and services. As a planning guide, budget from £2,200 + VAT per square metre for the extension shell and fit-out (excluding kitchen units, which are typically supplied separately by your chosen kitchen provider).
Our fixed-price approach means no surprises. After your free site visit, we provide an estimate, then detailed drawings, and finally a confirmed fixed price covering everything from foundations to completion. Visit our prices page for full pricing details.