We're looking for: a home with a business opportunity 17th-century 18-bedroom property with bed and breakfast business, £875,000 Accessed by a double broadly sweeping driveway, this huge house is thought to be the largest cottage in England as the original Grade II listed building has gradually been extended in order to accommodate 32 guests. Situated in the small north Essex village of Birchanger, near the Hertfordshire borders, the main house has plenty of Georgian Gothic character with grand fireplaces, exposed timbers, period panelling and Gothic windows. Beyond the main garden is a small paddock and a belt of woodland which contributes to the country feel of the property. The cottage also comes with a potential barn conversion which could serve as an extra detached dwelling for expansion of the business (Mullucks Wells, 01279 755400). Extended farmhouse with nearly 10,000 sq ft of cottages and commercial units, £1.5m The current owners of this large estate have run a food production business from two of the commercial units, but the numerous outbuildings could serve a variety of purposes depending on planning permission, and therefore this property lends itself to large business ideas. It also comes with an attached cottage which could potentially be a profitable holiday let. Byde Farm is set in 52 acres of land including arable and pasture land which could be used as part of a food production business. The house is a light and contemporary family home with a large dining hall and stunning views across its own land and small lake. It is near the hamlet of Stert, and about three miles from the historic market town of Devizes (Knight Frank, 020 7861 1033). Read more: We're looking for: homes for sports fans Read more: We're looking for: homes with a stylish family kitchen