OBinspeX Standard Estimated Life Expectancy Chart for Homes

These life expectancies have been determined through research and testing based on regular recommended maintenance and conditions of normal wear and tear, and not extreme weather or other conditions, neglect, over-use or abuse.  Therefore, they should be used as guidelines only, and not relied upon as guarantees or warranties.  

Thermostats may last 35 years but they are usually replaced before they fail due to technological improvements. 

Appliance life expectancy depends to a great extent on the use it receives. Furthermore, consumers often replace appliances long before they become worn out due to changes in styling, technology and consumer preferences. 

The life of a roof depends on local weather conditions, building and design, material quality, and adequate maintenance.  Hot climates drastically reduce asphalt shingle life.  Roofs in areas that experience severe weather, such as hail, tornadoes and/or hurricanes, may also experience a shorter-than-normal lifespan overall, or may incur isolated damage that requires repair in order to ensure the service life of the surrounding roofing materials.

Copper-plated wiring, copper-clad aluminum, and bare copper wiring are expected to last a lifetime, whereas electrical accessories and lighting controls, such as dimmer switches, may need to be replaced after 10 years.  GFCIs could last 30 years, but much less if tripped regularly.

 

Remember that faulty, damaged or overloaded electrical circuits or equipment are the leading cause of house fires, so they should be inspected regularly and repaired or updated as needed.


Fastener manufacturers do not give lifespans for their products because they vary too much based on where the fasteners are installed in a home, the materials in which they're installed, and the local climate and environment.  However, inspectors can use the guidelines below to make educated judgments about the materials they inspect.

Flooring life is dependent on maintenance and the amount of foot traffic the floor endures.

Concrete and poured-block footings and foundations will last a lifetime, assuming they were properly built.  Waterproofing with bituminous coating lasts 10 years, but if it cracks, it is immediately damaged.

The quality and frequency of use will affect the longevity of garage doors and openers.

Home technology systems have diverse life expectancies and may have to be upgraded due to evolution in technology. 

*Batteries should be changed at least annually
 

Surface preparation and paint quality are the most important determinants of a paint's life expectancy. Ultraviolet (UV) rays via sunshine can shorten life expectancy.  Additionally, conditions of high humidity indoors or outdoors can affect the lifespan of these components, which is why they should be inspected and maintained seasonally. 

Decks are exposed to a wide range of conditions in different climates, from wind and hail in some areas, to relatively consistent, dry weather in others. See FASTENERS & STEEL section for fasteners.

Natural stone countertops, which are less expensive than they were just a few years ago, are becoming more popular, and one can expect them to last a lifetime. Cultured marble countertops have a shorter life expectancy, however. 

The quality of plumbing fixtures varies dramatically.  The mineral content of water can shorten the life expectancy of water heaters and clog showerheads.  Also, some finishes may require special maintenance with approved cleaning agents per the manufacturers in order to last their expected service life.

Exterior fiberglass, steel and wood doors will last as long as the house, while vinyl and screen doors have a shorter life expectancy. The gaskets/weatherstripping of exterior doors may have to be replaced every five to eight years.

Swimming pools are composed of many systems and components, all with varying life expectancies.

Aluminum windows are expected to last between 15 and 20 years, while wooden windows should last nearly 30 years.

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