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A home inspection is a limited, non-invasive examination of the condition of a home, often in connection with the sale of that home. Home inspections are usually conducted by a home inspector who has the training and certifications to perform such inspections. The inspector prepares and delivers to the client a written report of findings. The client then uses the knowledge gained to make informed decisions about their pending real estate purchase. The home inspector describes the condition of the home at the time of inspection but does not guarantee future condition, efficiency, or life expectancy of systems or components.
An inspector will check the roof, basement, heating system, water heater, air-conditioning system, structure, plumbing, electrical, and many other aspects of buildings looking for improper building practices, those items that require extensive repairs, items that are general maintenance issues, as well as some fire and safety issues. However, it should also be noted that a home inspection is not technically exhaustive and does not imply that every defect will be discovered. Some inspection companies offer 90-day limited warranties to protect clients from unexpected mechanical and structural failures- otherwise inspectors are not responsible for future failures. A general list of exclusions include but are not limited to: code or zoning violations, permit research, property measurements or surveys, boundaries, easements or right of way, conditions of title, proximity to environmental hazards, noise interference, soil or geological conditions, well water systems or water quality, underground sewer lines and/or waste disposal systems, buried piping, cisterns, underground water tanks and sprinkler systems to name a few. A complete list of standards and procedures for home inspections can be found at NAHI, ASHI or InterNACHI or IHINA websites. A general inspection standard for all types of buildings can be found at the National Academy of Building Inspection Engineers (NABIE). These standards serve as a minimum level of care required by the various associations mentioned, it should be noted that many inspectors exceed these standards within their basic inspection or offer additional services such as inspecting pools, sprinkler systems, checking radon levels, and inspecting for wood destroying organisms. Another aspect of home inspections which is often over looked is foreclosure inspections; these inspections are often referred to as REO (Real Estate Owned) inspections. Professional home inspectors prefer to leave these inspections to the professional Certified Field Inspectors and the Certified Property Preservation Specialist. CFI and CPPS are typical certified through organization such as NAARPI or the North American Association of Real Property Inspectors.
A home inspector is sometimes confused with a real estate appraiser. A home inspector determines the condition of a structure, whereas an appraiser determines the value of a property. Although not all states or municipalities in the U.S. regulate home inspectors, there are some professional associations for home inspectors that provide education, training, and networking opportunities. A professional home inspection is an examination of the current condition of a house. It is not an inspection to verify compliance with appropriate codes.
The first known home inspection company, Home Equity Loss Protection Services dba/H.E.L.P.S.(Glen Ellyn, IL), was originally founded by Christopher P. Nolan and Loyola Professor Mark Goodfriend. Years later, the company was officially incorporated in the early 1980s by Jane Garvey, surviving wife of Professor Mark Goodfriend in Glen Ellyn, IL following its purchase from Christopher P. Nolan, the founder of the home inspection business and entrepreneur. Mr. Nolan was inspired to create a comprehensive system of home inspections because as an investor of distressed real estate and then a nationally recognized real estate expert and speaker, he realized a need to have skilled professionals inspect key areas of the home prior to his purchases in order to mitigate the risk of his investments.
North America 
In Canada and the United States, a contract to purchase a house may include a contingency that the contract is not valid until the buyer, through a home inspector or other agents, has had an opportunity to verify the condition of the property. In many states and provinces, home inspectors are required to be licensed, but in some states the profession is not regulated. Typical requirements for obtaining a license are the completion of an approved training course and/or a successful examination by the state's licensing board. Several states and provinces also require inspectors to periodically obtain continuing education credits in order to renew their licenses.
In May 2001, Massachusetts became the first state to recognize the potential conflict of interest when real estate agents selling a home also refer or recommend the home inspector to the potential buyer. As a result the real estate licensing law in Massachusetts was amended  to prohibit listing real estate agents from directly referring home inspectors. The law also prohibits listing agents from giving out a "short" name list of inspectors. The only list that can be given out is the complete list of all licensed home inspectors in the state.
Ancillary services such as inspections for WDI (wood destroying insect), radon testing, septic tank inspections, water quality, mold & private well inspections are sometimes a part of home inspector's services if duly qualified.
In many provinces and states, the practical standards for home inspectors are those enacted by professional associations such as (In the United States, Canada and Internationally) the International Association of Certified Home Inspectors (InterNACHI), (In the United States) the American Society of Home Inspectors (ASHI), the National Academy of Building Inspection Engineers (NABIE), the National Association of Home Inspectors (NAHI), and ( In Canada) the Canadian Association of Home and Property Inspectors (CAHPI), Professional Home & Property Inspectors of Canada (PHPIC) and Canadian National Association of Certified Home Inspectors (CanNACHI).
Currently, more than thirty U.S. states regulate the home inspection industry in some form.
United Kingdom 
A home inspector in the United Kingdom (or more precisely in England and Wales), was an inspector certified to carry out the Home Condition Reports that, it was originally anticipated would be included in the Home Information Pack.
On July 18, 2006, the Government announced the postponement of compulsory Home Condition Reports, which had been due to become part of the Home Information Packs on 1 June 2007, leaving the future for the inspectors somewhat uncertain .
Home inspectors were required to complete the ABBE Diploma in Home Inspection to show they meet the standards set out for NVQ/VRQ competence based assessment (Level 4). The government had suggested that between 7,500 and 8,000 qualified and licensed home inspectors would be needed to meet the annual demand of nearly 2,000,000 home information packs. In the event, many more than this entered training resulting in a massive over supply of potential inspectors.
With the cancellation of Home Information Packs by the coalition Government in 2010, the role of Home Inspector became permanently redundant.
Home inspection types 
Pre-delivery inspection 
The pre-delivery inspection, which generally applies to newly-built homes, is a real estate term that means the buyer has the option (or requirement, depending upon how the real estate contract is written) to inspect the property prior to closing or settlement. These inspections generally takes place up to a week before a closing, and they generally allow buyers the first opportunity to inspect their new home. Additionally, the inspection is to ensure that all terms of the contract have been met, that the home is substantially completed, and that major items are in working order.
Along with a representative of the builder (generally the construction supervisor or foreman), the buyers may be accompanied by a home inspector of their choice. Any noted defects are added to a punch list for completion prior to closing. Often a second inspection is conducted to ensure that the defects have been corrected.
Many local governments within the United States and Canada require that new-home builders provide a home warranty for a limited period, and this typically results in home builders conducting a pre-delivery inspection with the buyer.
In a resale situation, this type of inspection is often termed the "final walk-through", and, based on the contract's provisions, it allows the buyer the opportunity to inspect the home prior to closing to ensure that agreed-upon repairs or improvements have been completed.
Structural inspection 
Structural inspections report on the foundation and supporting elements of a home. When performing a structure inspection, the home inspector will look for a variety of distress indications that may result in repair or further evaluation recommendations.
Plumbing inspection 
During a home inspection, a home inspector will carry out a visual observation and general operation of the plumbing system. The inspection will consider readily accessible pipes, fixtures and components, while noting recognized adverse and material defects present at the time of inspection. Minor defects may be also reported. The inspection typically reviews the visible water supply and waste removal sewage system. Water flow performance is judged by running water through the pipes and sewage systems in normal modes and in a representative manner. The water heater is usually inspected for heating performance and safe operation which may include venting and the temperature and pressure relief valve. Water heater types include reservoir and on-demand systems using a variety of energy sources. Most homes generally obtain water supply from a city, nearby town, cooperative or private source. Water may be obtained from a lake, river, reservoir or well. If the source of water happens to be private or non approved the home inspector may recommend the client opt for an expert to evaluate the integrity of the water supply. Ideally the inspection intends to reduce risk for the buyer by reporting observed material defects. A defect may be a repair, maintenance or improvement consideration with or without a safety association.
Heating ventilation and air conditioning (HVAC) inspection 
A heating ventilation and air conditioning (HVAC) home inspection reviews the heating and cooling system of a home from a performance perspective. The inspection usually does not inspect or compare to codes or manufacturer requirements. Heating is provided typically by a forced air furnace distributed by duct work or a water/steam boiler using radiators or convectors, but space heaters, heat pumps and other methods are also in use. The energy source is usually natural gas, fuel oil, or electric, but other sources include wood and Geo-thermal. Cooling can be described as a split system, packaged unit, fan coil, heat pump, an evaporative cooler, or window/through-the-wall a/c unit.
A typical inspection will carry out a visual observation and operation of the HVAC system. The inspection will consider visible and readily accessible components, while noting recognized adverse and material defects present at the time of inspection. The inspection does not usually disassemble the equipment. The home inspection report may include a description of the system by its key components. Ideally the inspection intends to reduce risk for the buyer by reporting observed material defects. A defect may be a repair, maintenance or improvement consideration with or without a safety association. An optional statement on perceived useful remaining life may be provided.
See also 
- "Excerpt from Maryland home inspection statute". Michie.lexisnexis.com. Retrieved 2012-05-29.
- "What does a home inspection include?". Ashi.org. Retrieved 2012-05-29.
- "What to Expect in a Home Inspection". NAHI.org. Retrieved 2012-10-25.
- "Standards of Practice". NAHI.org. Retrieved 2012-10-25.
- "General Laws: CHAPTER 112, Section 87YY1/2". Malegislature.gov. Retrieved 2012-05-29.
- "Home-info pack plan in disarray". This is Money. 2006-07-20. Retrieved 2012-05-29.