Home Improvements in Basingstoke: Windows, Doors & Extensions

Why Basingstoke Chooses KJM Group

KJM Group has been providing professional installations across Basingstoke and the RG21-RG24 postcodes since 1983. From the historic charm of Old Basing to the modern architecture of Chineham and Hatch Warren, we understand that every home requires a bespoke approach.

We specialise in high-performance Timber Alternative windows and secure entrance systems that offer the perfect balance of aesthetic appeal and 21st-century energy efficiency.

In conservation areas like Old Basing, maintaining the historical aesthetic is paramount. Standard uPVC windows often fail to meet planning expectations, but KJM Group offers a solution that planners love.

Our Residence Collection and Roseview Sash windows are engineered to replicate the mechanical joints and proportions of 19th-century timber. You get the authentic heritage look with none of the maintenance—just superior A-rated thermal performance and modern security.

Explore Glazing Options:

• Flush Casement Windows
• Triple Glazing Upgrades

Many homeowners in Kempshott and Hatch Warren find their older conservatories are either freezing or like a greenhouse. We specialise in Tiled Conservatory Roof replacements that turn these spaces into genuine, year-round living rooms.

Replacing a glass or polycarbonate roof with a fully insulated tiled structure creates a true extension. We use advanced lightweight systems matched to your existing house tiles. Internally, a plastered vaulted ceiling with LED lighting creates a modern, cosy atmosphere with U-values as low as 0.15 W/m²K.

Transform Your Living Space:

• Tiled Roof Systems
• Glass Conservatories