on the area. Sellers know this, so should be flexible on price. So how can ruthless would-be buyers get the best possible deal? Buying agents are hired to locate suitable homes and negotiate a good price. They use a rigorous checklist and if they spot a problem, they go for the jugular. Inside  Kitchens: Are there leaks near the sink, dishwasher or washing machine? Check the ceiling for marks as the kitchen is usually just below the bathroom. Also check the water pressure is OK in the taps, particularly if the kitchen is on an upper floor or in a high-rise apartment.  Bathrooms: Get in the bath and check if it then separates from the seal. If the boiler is new, see a guarantee. If not, ask about service history (it must be checked annually). If it's old, cut your offer by the cost of a new one.  Bedrooms: If you see blankets, hot water bottles and so on, the room is cold. Why?  Living rooms: If there's a wooden floor, check to see whether it's noisy. And does it contravene the lease in a flat? Ensure carpets and lights are included in the sale if you want them. Where there's a chimney check the brickwork - black marks suggest the flue is damaged.  Roofs: Are they sound? Slate tiles usually last 15 years and a flat roof needs replacing after just seven years.  Gutters: If they're blocked, water may well have penetrated the