Sometimes referred to as "slope house plans" or "hillside house plans," sloped lot house plans save time and money otherwise spent adapting flat-lot plans to hillside lots. In fact, a hillside house plan often turns what appears to be a difficult lot into a major plus. How? For one, building on a slope creates the opportunity for a walkout basement or daylight basement, a cool element that maximizes space and provides an extra level of indoor/outdoor living. If you do a lot of entertaining, consider selecting a hillside house plan that features a rec room and/or wet bar in its lower level. That way, cool indoor/outdoor flow can be established. Just imagine: while one spouse BBQs out on the lower level patio, the other spouse can be within ear-shot as he or she plays pool or mixes drinks for guests. Note: hillside house plans can work well as both primary and secondary dwellings.