Row houses, also known as terraced houses or townhouses, are rows of houses joined together by sharing one or two walls. The structures usually are not as expensive to construct as similar-sized detached properties. However, they are more costly to erect than the same number of high-rise flats, generally, because the buildings require a greater footprint of land. Row houses only have gardens or yards at the front and back, except for end houses. Sometimes, the end properties are converted into corner shops.
Semi-detached properties are two separate units joined together, sharing one wall. In the case of dwellings, one is usually the mirror image of the other in terms of design. Semi-detached houses have gardens, or yard space, to three sides. Detached properties are single units with garden or yard space to all four sides. In most cases, semi-detached and detached properties are much more expensive to build than a high-rise building offering equivalent capacity.
A relatively recent concept, of a virtual business team, has been made possible by modern technology. Using the Internet and its many applications, business teams don't necessarily need a building any more. Indeed, some virtual teams never physically meet at all, being able to communicate and conduct their business using email, video conferencing and private Web portals. This method is a much less expensive way of running a business, because an organization does not need to meet the significant costs of building construction or rental before starting to make a profit.
Underground properties may become more popular in future, as land costs aboveground increase. Montreal's underground city RESO or La Ville Souterraine, the largest underground city in the world, is an example of what can be achieved. Some alternatives to high rises include the use of more green belt land, which ensures wildlife retains a presence in our urban communities. Although this designation often is an unpopular choice, future population growth may make its existence a necessity.