The concept of home improvement, home renovation, or remodeling is the process of renovating or making additions to one's home. Home improvement can consist of projects that upgrade an existing home interior (such as electrical and plumbing), exterior (masonry, concrete, siding, roofing) or other improvements to the property (i.e. garden work or garage maintenance/additions). Home improvement projects can be carried out for a number of different reasons; personal preference and comfort, maintenance or repair work, making a home bigger by adding rooms/spaces, as a means of saving energy, or to improve safety.
While "home improvement" often refers to building projects that alter the structure of an existing home, it can also include improvements to lawns, gardens, and outdoor structures, such as gazebos and garages. It also encompasses maintenance, repair, and general servicing tasks. Home improvement projects generally have one or more of the following goals:
Maintenance projects can include:
Additional living space may be added by:
Homeowners may reduce utility costs with:
Emergency preparedness safety measures such as:
Further information: Hardware store
Home or residential renovation is an almost $300 billion industry in the United States, and a $48 billion industry in Canada.[full citation needed] The average cost per project is $3,000 in the United States and $11,000–15,000 in Canada.
Professional home improvement is ancient and goes back to the beginning of recorded civilization. One example is Sergius Orata, who in the 1st century B.C. is said by the writer Vitruvius (in his famous book De architectura) to have invented the hypocaust. The hypocaust is an underfloor heating system that was used throughout the Roman Empire in villas of the wealthy. He is said to have become wealthy himself by buying villas at a low price, adding spas and his newly invented hypocaust, and reselling them at higher prices.
Perhaps the most important or visible professionals in the renovation industry are renovation contractors or skilled trades. These are the builders that have specialized credentials, licensing and experience to perform renovation services in specific municipalities.
While there is a fairly large ‘grey market’ of unlicensed companies, there are those that have membership in a reputable association and/or are accredited by a professional organization. Homeowners are recommended to perform checks such as verifying license and insurance and checking business references prior to hiring a contractor to work on their house.
Aggregators are companies that bundle home improvement service offers and act as intermediary agency between service providers and customers.
Home improvement was popularized on television in 1979 with the premiere of This Old House starring Bob Vila on PBS. American cable channel HGTV features many do-it-yourself shows, as does sister channel DIY Network. Danny Lipford hosts and produces the nationally syndicated Today's Homeowner with Danny Lipford. Tom Kraeutler and Leslie Segrete co-host the nationally syndicated The Money Pit Home Improvement Radio Show.
Movies that poked fun at the difficulties involved include: Mr. Blandings Builds His Dream House (1948), starring Cary Grant and Myrna Loy; George Washington Slept Here (1942), featuring Jack Benny and Ann Sheridan; and The Money Pit (1986), with Tom Hanks and Shelley Long. The sitcom Home Improvement used the home improvement theme for comedic purposes.