The simple reason, of course, is to sell your houses quickly, whether they are under construction or just an idea in a designer's mind. Perspective renderings can save a lot of money.
But there are other reasons as well. One is that an elevation does not give the prospective customer an accurate idea how his or her new home will really look. Elevations are artificial projections. Each part is drawn as though the eye were looking at it straight on, whether that part is 30 feet in the air, at ground level, or 40 feet to the left or right. There is no possible vantage point that will allow you to see the real house as it appears in the elevation. It simply doesn't look that way.
That can be a problem, if the elevation raises expectations that aren't realized when the house is built. More likely is the possibility that a teriffic house won't attract the buyers it deserves because the elevation doesn't show its features to the best advantage.
Notice, for example, how dominant the roof line is in the elevation on the right, how the main roof appears so much higher than the others, and how the house appears tall and narrow.
On the left is a perspective rendering that shows how the same house will really look, once it is built. Notice that the main roof no longer seems to dominate the shape, and that the other rooflines now seem to contribute more to the outline.
The perspective shows that this house is actually larger and more estate-like than it appeared in the elevation. The customer can also see more of the other attractive features such as the overhangs and bay windows. In the case of a replacement home, the neighbors can see how the house will really look. Placing a large weatherproof rendering in front of a teardown project works wonders.
Despite the fact that the elevation on the right, has been only minimally "textured." the extreme reduction that is often necessary for newspaper advertising has already made those details dark and muddy.
Again, it is not clear how the garage and other structures in the front of the house contribute to its overall outline, as seen from the street.
Architectural Graphics exclusive methods for controlling contrast and density allows your renderings to be printed at any size, including extreme reductions, without obscuring the textures and details.
The perspective rendering of the same house shows the true proportions of the rooflines and how it will really appear to the customer returning home.
Suprises are for birthdays. In homebuilding, they're almost always unpleasant and expensive. If you rely on elevations, the customer is almost always in for a suprise.
It has been demonstrated, however, that customers who have an accurate idea how their new home will really look are more relaxed throughout the process, less anxious, and easier to deal with. Perspective renderings also attract attention to models that otherwise might not sell quickly.
Also, it is not unusual for a builder, once he or she has seen a perspective rendering of a new design, to order changes to bring the building more into line with the way he or she wanted it to look. Obviously, this is something that should occur as early in the process as possible.
And as far as changing the rendering is concerned, should you decide you need to make changes, don't worry. Getting it the way you want it is all part of the service.