Appraisers and assessors of real estate estimate the value of real property--land and the buildings on that land-- before it is sold, mortgaged, taxed, insured, or developed.
Appraisers and assessors of real estate typically do the following:
Appraisers and assessors work in localities that they are familiar with so that they know any environmental or other concerns that may affect the property's value.
Appraisers typically value one property at a time, and they often specialize in a certain type of real estate. For example,
When estimating a property's value, appraisers note unique characteristics of the property and surrounding area, such as a noisy highway nearby. They also consider the condition of a building's foundation and roof or any renovations that may have been done. In addition to photographing the outside of the building to document its condition, appraisers might also photograph a certain room or feature. After visiting the property, the appraiser estimates the value of the property by considering things such as comparable home sales, lease records, location, view, previous appraisals, and income potential. During the entire process, appraisers meticulously record their research, observations, and methods used in calculating the property's value.
Assessors mostly work for local governments and value properties for property tax assessments. Unlike appraisers, who generally focus on one property at a time, assessors often value an entire neighborhood of homes at once by using mass appraisal techniques and computer-assisted mass appraisal systems.
Assessors must be up-to-date on tax assessment procedures. Taxpayers sometimes challenge the assessment because they feel they are being charged too much for property tax. Assessors must be able to defend the accuracy of their property assessments, either to the owner directly or at a public hearing.
Assessors also keep a database of every property in their jurisdiction, identifying the property owner, assessment history, and size of the property, as well as property maps detailing the property distribution of the jurisdiction.
Environmental scientists and specialists use their knowledge of the natural sciences to protect the environment. They identify problems and find solutions that minimize hazards to the health of the environment and the population.
Environmental scientists and specialists typically do the following:
Environmental scientists and specialists analyze environmental problems and develop solutions. For example, many environmental scientists and specialists work to reclaim lands and waters that have been contaminated by pollution. Others assess the risks new construction projects pose to the environment and make recommendations to governments and businesses on how to minimize the environmental impact of these projects. They also identify ways that human behavior can be changed to avoid problems such as the depletion of the ozone layer.
The federal government and many state and local governments have regulations to ensure that there is clean air to breathe, safe water to drink, and no hazardous materials in the soil. The regulations also place limits on development, particularly near sensitive parts of the ecosystem, such as wetlands. Many environmental scientists and specialists work for the government to ensure that these regulations are followed. Other environmental scientists work for consulting firms that help companies comply with regulations and policies.
Some environmental scientists and specialists focus on environmental regulations that are designed to protect people's health, while others focus on regulations designed to minimize society's impact on the ecosystem. The following are examples of types of specialists:
Environmental health specialists study how environmental factors impact human health. They investigate potential health risks, such as unsafe drinking water, disease, and food safety. They also educate the public about potential health risks present in the environment.
Environmental protection specialists monitor the effect human activity has on the environment. They investigate sources of pollution and develop prevention, control, and remediation plans.
Other environmental scientists do work and receive training that is similar to that of other physical or life scientists, but they focus on environmental issues. Environmental chemists are an example.
Environmental chemists study the effects that various chemicals have on ecosystems. For example, they look at how acids affect plants, animals, and people. Some areas in which they work include waste management and the remediation of contaminated soils, water, and air.
Many people with backgrounds in environmental science become professors and teachers. For more information, see the profile on postsecondary teachers.
Environmental engineers use the principles of engineering, soil science, biology, and chemistry to develop solutions to environmental problems. They are involved in efforts to improve recycling, waste disposal, public health, and control of water and air pollution. They also address global issues, such as safe drinking water, climate change, and sustainability.
Environmental engineers typically do the following:
Environmental engineers conduct hazardous-waste management studies in which they evaluate the significance of the hazard and advise on treating and containing it. They also design municipal water supply and industrial wastewater treatment systems and research the environmental impact of proposed construction projects. Environmental engineers in government develop regulations to prevent mishaps.
Some environmental engineers study ways to minimize the effects of acid rain, global warming, automobile emissions, and ozone depletion. They also collaborate with environmental scientists, planners, hazardous waste technicians, engineers, and other specialists, such as experts in law and business, to address environmental problems and sustainability. For more information, see the job profiles on environmental scientists and specialists, hazardous materials removal workers, lawyers, and urban and regional planners.
Environmental science and protection technicians monitor the environment and investigate sources of pollution and contamination, including those affecting health.
Environmental science and protection technicians typically do the following:
Many environmental science and protection technicians work under the supervision of environmental scientists and specialists, who direct their work and evaluate their results. In addition, they often work on teams with scientists, engineers, and technicians in other fields to solve complex problems related to environmental degradation and public health. For example, they may work on teams with geoscientists and hydrologists to manage the cleanup of contaminated soils and ground water.
Most environmental science and protection technicians work either for state or local government or for private consulting firms.
In state and local governments, environmental science and protection technicians enforce regulations that protect the environment and people's health. They spend a lot of time inspecting businesses and public places and investigating complaints related to air quality, water quality, and food safety. They may issue fines or close establishments that violate environmental or health regulations.
In private consulting firms, environmental science and protection technicians help clients monitor and manage the environment and comply with regulations. For example, they help businesses develop cleanup plans for contaminated sites, and they recommend ways to reduce, control, or eliminate pollution. Also, environmental science and protection technicians conduct feasibility studies for, and monitor the environmental impact of, new construction projects.
Environmental engineering technicians engineering technicians carry out the plans that environmental engineers develop.
Environmental engineering technicians typically do the following:
In laboratories, environmental engineering technicians record observations, test results, and document photographs. To keep the laboratory supplied, they also may get product information, identify vendors and suppliers, and order materials and equipment.
Environmental engineering technicians also help environmental engineers develop devices for cleaning up environmental pollution. They also inspect facilities for compliance with the regulations that govern substances such as asbestos, lead, and wastewater.