When space runs out or your lifestyle evolves, extending your home can be one of the smartest — and most rewarding — investments you’ll make. But not all home extensions are created equal. The right extension not only enhances how you live but also adds lasting value to your property, especially in sought-after areas of East Sussex.
At Sotheby Homes, we’ve designed and delivered bespoke extensions across the region — from kitchen-focused family hubs to elegant additions that blend seamlessly with period architecture. Here are the top types of extensions proven to increase both space and resale value in East Sussex.
1. Rear Kitchen & Dining Extensions
A bright, open-plan kitchen-diner is at the top of most homebuyers’ wish lists — and for good reason. Rear extensions that expand the kitchen area and open out to the garden create the kind of lifestyle-focused living that adds both functional space and wow factor.
Value boost: Up to 15%
Ideal for: Uckfield, Heathfield, and rural homes with garden space to spare
2. Side Return Extensions
A popular choice for Victorian and Edwardian terraced homes, side return extensions make use of narrow alleyways to create more internal width — perfect for expanding kitchens or dining rooms without losing garden space.
Value boost: 10–15%
Ideal for: Lewes, Tunbridge Wells fringes, and period streets in Crowborough
3. Double-Storey Rear Extensions
Looking to maximise both ground and upper floors? A two-storey extension can provide an expansive open-plan kitchen below and an additional bedroom or bathroom above — perfect for growing families.
Value boost: 15–20%
Ideal for: Detached homes across Eastbourne, Forest Row, and Ringmer
4. Wraparound Extensions
Combining rear and side extensions, this option unlocks significant square footage and layout flexibility. With the right design, it can completely transform the ground floor flow and increase your home’s value dramatically.
Value boost: 20%+
Ideal for: Larger plots and corner properties across East Sussex villages
5. Garden-Facing Orangery or Sunroom
For homeowners seeking elegance and light, an orangery or glazed sunroom can offer a peaceful transition between indoors and outdoors — perfect as a sitting room, dining space, or even home office.
Value boost: Varies by design and quality
Ideal for: Countryside homes and character properties across Sussex
Design Tips to Maximise ROI
- Blend old and new: Match materials and architectural details to maintain character.
- Prioritise natural light: Rooflights, bi-fold doors, and generous glazing create appeal.
- Plan for lifestyle: Think about how the new space connects to the rest of the home.
Get expert guidance: A well-designed, high-quality build delivers far better returns than a rushed or generic one.
Planning in East Sussex: What to Know
Many East Sussex homes fall within conservation areas or Areas of Outstanding Natural Beauty (AONBs). This makes design sensitivity and planning experience essential. At Sotheby Homes, we handle planning on your behalf — ensuring compliance while realising your vision.
Ready to Extend Your Home?
Whether you’re in Lewes, Uckfield, Crowborough or anywhere across East Sussex, our expert design and build team can help you create a bespoke extension that adds space, style, and long-term value.