Top Home Improvements That Add Value to Your Property in 2025

Not all home improvements give you a good return on investment. Some cost £30,000 and add £50,000 to your home's value. Others cost the same and add next to nothing. Understanding which projects deliver the best ROI in the current UK market is essential before you commit. Here's our evidence-based guide for 2025.

1. Loft Conversion — ROI: 15–25% Property Value Increase

Consistently the highest-returning home improvement in the UK. Adding a bedroom and en-suite bathroom in the loft can add 15–25% to your home's value. In Hampshire and Surrey, where four-bedroom homes command a significant premium over three-bedroom equivalents, the uplift can be even greater.

Typical cost: £35,000–£65,000 | Typical value added: £50,000–£90,000

2. Single Storey Kitchen Extension — ROI: 5–15%

A well-designed kitchen extension with open-plan dining and quality bifold doors is one of the top selling points for UK buyers. Estate agents consistently report that open-plan ground floors are one of the most requested features by buyers in the £300,000–£700,000 bracket.

Typical cost: £35,000–£65,000 | Typical value added: £25,000–£60,000

3. Double Storey Extension — ROI: 10–20%

For maximum space and maximum return, a double storey extension is hard to beat. Adding a kitchen extension downstairs and a master bedroom with en-suite above transforms a property fundamentally — and the cost per square metre is far lower than a single storey extension.

Typical cost: £55,000–£90,000 | Typical value added: £60,000–£120,000

4. Bathroom Renovation — ROI: 3–5%

A dated bathroom can actively put buyers off. A modern, well-tiled bathroom with quality sanitaryware costs £6,000–£15,000 to fit out and can add 3–5% to your home's value — particularly if it means upgrading from one bathroom to two.

5. New Kitchen — ROI: 3–7%

A kitchen makes or breaks a sale. Research by Rightmove suggests that a modern kitchen can add 5–7% to a property's value. Crucially, the best return comes from a mid-range renovation (£10,000–£20,000), not a luxury one (£40,000+), which rarely recoups its full cost.

6. Garden & Landscaping — ROI: 5–15% on kerb appeal

First impressions matter enormously. A well-maintained garden, quality paving, and good kerb appeal can attract 5–15% more interest in your property — directly impacting sale speed and price. In competitive markets, properties with well-designed gardens sell measurably faster.

7. Energy Efficiency Improvements — ROI: 2–8%

With energy bills remaining high, buyers are increasingly valuing well-insulated, energy-efficient homes. An EPC rating upgrade from D to B or C can add 2–8% to property value. Insulation, heat pump installation, and solar panels are all eligible for government grants.

Projects With Low ROI (To Approach with Caution)

• Swimming pools — costly to maintain and not valued by most UK buyers
• Luxury home cinema rooms — too niche to add broad appeal
• Over-specification for the area — a £100,000 extension on a £250,000 home rarely pays off
• Conservatories — often valued below their cost in cold climates; a solid-roof orangery performs better

The Golden Rule: Don't Over-Improve

The most important principle in property investment is the "ceiling price" of your street. If the best houses on your road sell for £500,000, spending £150,000 on extensions and renovations will not produce a £650,000 house — you'll be capped by the ceiling price. Research your area thoroughly before committing to large-scale improvements.