- HVAC fabricator A manufacturer of heating, ventilation, and air conditioning systems in a building.
- hairpin stairway Stairs which turn 180 degrees once between each floor.
- half-timbering A decorative pattern of exposed framing timbers and contrasting infill on a building facade.
- hall An enclosed structure dominated by very large undivided spaces.
- hall of fame A place dedicated to enshrining persons or entities which have excelled in a particular field.
- handbag store A shop specializing in purses, handbags, and similar accessories.
- handball One or more courts or fields for handball with 2 goals and a surface conducive to bouncing.
- handicapped accessible All usable areas of the structure can be accessed by persons with physical disabilities.
- hanging incandescent lamps Lights using electrically heated filaments which project or hang from the ceiling.
- harbor A site on a body of water where ships or boats can dock for loading and unloading.
- hard sand A floor or ground area composed of sand particles packed or hardened into a firm surface.
- hardware store A retail outlet specializing in tools and supplies used in ordinary maintenance and handiwork.
- hat store Retail space specializing in hats and other protective headgear.
- hay storage Space for bulk storage of harvested grass stems.
- hazardous waste collection A site for the collection and sorting of hazardous wastes.
- headframe An open framework at the top of a mine shaft for lifting and lowering a hoist underground.
- headquarters The main office of a company.
- health Space used for medical and recuperative care, or for maintenance of well-being.
- health food store A grocery store specializing in natural, organic, or particularly healthy foods.
- heat distribution A site used in the distribution of heat energy between its points of generation and use.
- heat generation A central facility for heating water or air and directing it to other structures to heat them.
- heat pump Heating is transferred from nearby air or water by a mechanical engine.
- heat recovery ventilation A system which saves energy by using a counter-flow heat exchanger at the point of ventilation.
- heating installation A contractor which installs heating systems in a building, exclusive of other mechanical systems.
- heating oil storage Space for bulk storage of kerosene or other petroleum-derived heating oil.
- heating system fabricator A manufacturer of heating units such as boilers, radiators, or heat pumps.
- heating type The source and system used to deliver heat to most of a building's interior.
- height Vertical measurements of structures above the base level.
- height finished floor to finished ceiling The median height between the top of a floorplate and the ceiling above it.
- height floorplate to floorplate The median height between the tops of two adjacent floorplates in a multistory structure.
- height floorplate to structural ceiling The maximum potential room height of a median floor in a building, without a dropped ceiling or raised floor.
- height safety A company that supplies equipment, technology, and/or processes to keep construction workers safe on high projects.
- height to eaves The height of a facade from ground level to where the roof angles away from it.
- helical gear traction Geared traction elevators in which the sheave is driven by a screw-like gear meshed with a worm gear.
- helicopter parking A place for storage of helicopters when not in use.
- helipad A landing and take-off platform for helicopters with sufficient airspace.
- helipad consultant A firm which calculates requirements and makes plans for helicopter pads.
- helipad fabricator A manufacturer or assembler of helicopter pads used on a structure.
- helipad height The distance from base level to the deck of the highest helipad.
- heliport A place for helicopters to take off and land.
- helix stairway Stairs which curve around a central axis.
- hemp loose fill Loose fibers from plants of the cannabis genus used as thermal insulation.
- heptagon A roughly even 7-sided floor plan.
- herbalist A shop specializing in medicinal plants.
- hero memorial A site or object dedicated in memory of a person who accomplished some great deed.
- hewn stone A staircase carved in place out of natural rock.
- hexagon A roughly even 6-sided floor plan.
- hidden passageway A passage or stairway inside or between buildings which is architecturally concealed.
- high-bay warehouse A large logistical storage facility in a rack-supported building.
- high-rise building A multi-story structure with at least 10 floors which is less than 100 meters tall.
- high-voltage connection Direct cable access to electric power at higher-than-normal voltage.
- higher education Classroom space for education at the college level or higher, or any formal adult education.
- highway A corridor for road vehicles with limited access to intersecting routes.
- highway police station A base for highway patrol officers.
- hiking An area or path designated for pleasurable walking and enjoyment of nature.
- hindu affiliation Directly connected with the Hindu faith or operated by an organization belonging to it.
- hipped roof A roof with four or more uneven sides which slope up to a connecting ridgeline.
- historic event A noteworthy occurrence in the lifecycle of an object which is not directly associated with its status or functioning.
- historic memorial A site or structure which memorializes some historic event or trend.
- historical plaque A permanent plaque mounted on the facade or in public view with interesting information about the structure.
- historical style Architectural styles from before the 19th century.
- history museum A place for exhibits about the historic past, usually with a specific focus.
- hobby store Retail space specializing in miscellaneous hobby-related products.
- hoist manufacturer The company which assembles the temporary mounted elevator used during construction.
- hole An architectural void penetrating through a building's mass, more significant than a mere passageway.
- holeless hydraulic Hydraulic elevators using a pair of cylinders resting at base level.
- home accessories store Retail space specializing in household items such as appliances, kitchenware, bath products, and furniture.
- home automation software A producer of software used in computer-controlled applications in homes.
- home improvement store A store specializing in products used in home maintenance and improvement.
- home leasing center A place where individual homes are leased or rented to customers.
- home product store Retail space specializing in household furnishings or accessories.
- home sales center A place where individual homes, usually from a single development, are sold directly to customers.
- homeless park settlement A crude or makeshift home established with permission on a site reserved for persons who would otherwise be homeless.
- homeless shelter Living space provided as a refuge for persons without homes.
- homeopathic clinic A center for treatment of patients through administration of diluted preparations with supposed healing properties.
- hookah lounge A place designated for inhalation of flavored smoke through water pipes.
- hopper A window which is hinged at the bottom.
- horizontal addition approved A new addition at the side of an existing structure is approved by local authorities.
- horizontal addition begins construction Continuous work starts on a new addition at the side of an existing structure.
- horizontal addition completed A new extension to the side of an existing structure is finished and ready for use.
- horizontal addition proposed A new addition at the side of an existing structure is first proposed.
- horse parking A place designated for parking of horses when their riders have temporarily dismounted.
- horse traffic A place used for equestrian or riderless horse movement.
- horse walker A circular or oval guideway used to keep horses walking for their own fitness.
- horse-racing A facility with one or more tracks for speed contests for horses.
- hospital A facility for intensive and emergency medical care.
- hospitality Hotel-like places for housing of guests and visitors.
- hospitality room Space available to any tenant for large parties, meetings, and other group functions.
- hot dog stand A limited-service eatery or take-out place specializing in hot dogs.
- hotel A multi-room space where guests stay on a night-by-night basis.
- hotel area Total open floor area used for hotel space.
- hotel building A building where guests stay on a night-by-night basis.
- hotel operator The business which manages or lends its brand to a hotel, motel, or similar form of lodging.
- hotel-condominium Privately owned units which may be let out as hotel rooms when not used as residences.
- house A structure designed or built to house a family.
- house number A number identifying a property's position with respect to an adjoining or nearby street.
- house running Installed supports and obstacles used for sport climbing on the face of a building.
- housing cooperative A membership-based entity set up for collective ownership of multi-unit residential properties.
- hovercraft traffic A site used as a route for hovercraft transportation.
- humidity Relative or absolute measurements of moisture content in the air.
- hut A single-story structure for human occupancy without complex internal division.
- hvac renewal begins Replacement or major improvements begin in a structure's heating, ventilation, and air conditioning systems.
- hvac renewal ends Replacement or upgrades of a structure's heating, ventilation, and air conditioning systems is completed.
- hydraulic Elevators lifted by a fluid-filled cylinder controlled by a pump.
- hydroelectric power plant A facility for generating electric power by harnessing naturally flowing water.
- hydronic floor heating Underfloor heating through a network of water pipes.
- hypermarket A very large general store combining merchandise of a department store with that of a supermarket.