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Bungalow extension being built with scaffolding and building materials in the foreground

House Extensions & Conversions in West Norfolk

Osier Developments Ltd in King's Lynn specialises in house extensions and conversions, creating functional and stylish spaces for domestic properties, local organisations and councils across West Norfolk.

Call us today to discuss your project

20+ Years' Experience

Tailored Services & Designs

Free Consultations

From House to Home

Sometimes, your house just doesn’t fit your life any more. Maybe you need more room for a growing family, or perhaps you’re dreaming of a home office that doesn’t double as the kitchen table. That’s where house extensions and conversions come in. They’re not just about adding space; they’re about creating a home that works for you. At Osier Developments Ltd, we understand the challenges of making your home fit your lifestyle. Whether it’s a loft conversion to give you that extra bedroom or a kitchen extension to create the heart of your home, we’re here to make it happen. Based in King's Lynn, we bring over 20 years of experience to all projects across West Norfolk.

Loft conversion underway with new steel support beams

House Extensions

At Osier Developments Ltd, we specialise in high-quality house extensions designed to enhance your living space. Whether you need a single or two-storey extension, a kitchen expansion, or extra bedrooms and bathrooms, we work with expert architects to create seamless additions. From design to completion, we ensure every project is built to the highest standards, adding both space and value to your home.

New house extension with rendered walls and bi-fold doors
Loft conversion that has been completed with new bay windows

Conversions

Our loft and garage conversions provide the perfect solution for creating extra living space without moving home. Whether you need a home office, an extra bedroom, or a multi-purpose room, we design and build bespoke conversions tailored to your needs. Each project is fully insulated, professionally finished, and designed for year-round comfort to maximise your home’s potential.

Renovation Services

We offer a full range of home renovation services to refresh and improve your property. From door hanging and window fitting to interior alterations and modern upgrades, we handle every aspect with precision and care. Whether you’re updating a single room or renovating your entire home, we deliver high-quality workmanship to transform your space.

"Osier Developments have been professional, knowledgeable and worked really hard to get our extension and renovation done. From initial concept, right through to completion they have been exceptionally good. Highly recommended"

Let’s Build Your Dream Space

Call Osier Developments Ltd today to discuss your house extension, conversion or new build project. Let’s create a home that works for you.

Completed porch extension on a family home, in red brick

Contact us

Unit D Hill Farm

Castle Acre Road

Great Dunham

Kings Lynn

PE32 2LP

Business hours

Mon-Fri: 08:00 - 17:00

Sat: Closed

Sun: Closed

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Osier Developments Ltd, registered as a limited company in England and Wales under company number: 14118359.
Registered Company Address: 4b Church Street, Diss, Norfolk, United Kingdom, IP22 4DD

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