Building Your Custom Home For Dummies. Peter Economy
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Zoning in on zoning’s limitations
Nearly every city and county attaches building restrictions to land when the land is first put into development. This is called zoning. Zoning determines many factors you must consider, including:
The type of building you can put on the land
The lot’s minimum size
The number of dwellings or units you can build on the lot
Finding out and understanding the zoning of a particular lot before you decide to buy is important. The information is readily available at your friendly, local city hall or county government building; your local government also has a guide that can tell you what each zoning designation means.
Don’t take today’s zoning for granted — the local government can zone to meet with the needs of the community on almost a moment’s notice and without your agreement or even advance knowledge. Although this change happens mostly in rural areas, check with the local government to see if any zoning questions for your area are scheduled. While you’re at it, be sure to ask if any special tax assessments will affect the property. These assessments can add to your expenses as well. And remember that many municipalities will allow you to petition to have a property rezoned, but it may cost you, and it’s not likely to be approved.
Understanding setbacks and footprints
Setbacks determine how far from the edges of your lot you must build. They’re generally determined by the property zoning restrictions and the CC&Rs. The side setbacks are generally closer to the property line than the front and rear setbacks, but not always. This information is crucial for figuring out where you can place the house on the lot. Many neighborhoods like to keep the houses uniform, so look to see how close neighbors’ houses are to the street and each other to get a feel for the setbacks. In urban areas, the side setbacks may be as small as only a few feet (Peter’s old house in San Diego had a side setback of only 3 feet — barely enough room to wheel his trashcan through to the street every Monday night). Rural areas can require larger setbacks from the street or other houses, impacting curb appeal.
The footprint of the home is the building’s outer perimeter and how it sits upon the lot, taking into account the setbacks (see Figure 3-1). When looking at a lot, try to imagine in rough design how positioning the footprint can take advantage of the following:
Drainage
Noise
Sunlight
Topography
Views
Wind
Courtesy of Tecta Associates Architects, San Francisco
FIGURE 3-1: Setbacks determine the placement of your footprint, ultimately restricting your home’s size.
The combination of footprint and setbacks may dictate whether your house is one story or more. Significant side setbacks can force you to design a smaller-footprint home, which can make a difference in estimating building costs. A smaller building area may mean that building a second floor is essential. Building a second floor can work to your advantage, however, because a two-story house can be less expensive to build than a one-story house. (For example, building a two-story house with 4,000 square feet is cheaper than building a one-story house with the same square feet. The two-story house requires less excavation, foundation, and roof work than the one-story house does.)
Height restrictions spelled out in the CC&Rs have an impact on your house’s size. If your setbacks force a smaller footprint, then your height restriction will limit the size of house you can build. Have your real-estate agent obtain this information for you before you purchase the lot to make sure it meets your needs. You can also contact the local planning department to access the information yourself.
Size matters: Assessing the land’s value with the house
Even though much of the planning for your new home is considered in the design phase that we discuss in Chapter 4, considering the planned size of your house when purchasing the lot is important. You can’t build any house you want on any lot. You’ll probably face restrictions set by the city, county, and sometimes the market. Doing your homework on the limitations of what can be built on a lot can keep you from making costly mistakes.
How do you know for sure that the land you want to buy is going to fit within your budget? You must consider it in the