05 Oct Which are the best house improvements to add value to your home? Posted at 11:03h in Uncategorized by admin 0 Comments 0 Likes Share Upgrading the kitchen could add up to 5% on to your house sale price. Updating your bathroom could add 3% on to the value of your home. Loft conversions could add up to 12% of value to your home Converting a garage is probably the most cost-effective way of adding extra space to your home. A conservatory could add up to 7-15% to the value of your home.