Under federal law, elevators are required by the ADA and building codes in most new commercial buildings of three or more stories that also have at least 3,000 square feet on any story, and in any size of shopping mall, health care provider office, or transportation terminal. Residential buildings with four or more units follow a separate rule under the Fair Housing Act. State and local building codes often set a lower threshold than the federal one, so the real answer for any given project depends on the building type, its size, its use, and its location.
The Basic Rule for New Commercial Construction
The 2010 ADA Standards for Accessible Design require multi-story buildings to provide an accessible route connecting every story and mezzanine, which in practice means an elevator. The standards then exempt private buildings that are either less than three stories tall or have less than 3,000 square feet per story.1ADA.gov. 2010 ADA Standards for Accessible Design
The “or” is doing real work in that sentence. A five-story building with 2,800-square-foot floors is exempt on the square-footage side, even though it’s well over three stories. A two-story building with 20,000-square-foot floors is exempt on the story-count side. Either condition alone is enough to skip the elevator, unless the building falls into one of the categories described in the next section.
The buildings this rule covers are places open to the public (called “public accommodations” in the ADA) and non-residential “commercial facilities” like offices and warehouses. If you’re building either kind and you clear both prongs of the exemption, plan for an elevator.
Buildings That Always Need an Elevator
Some buildings can’t use either exemption. Even a one-story building in these categories has to provide vertical access if there’s any change of level that requires it. The exemption doesn’t apply to:
- Shopping centers and malls, meaning any retail complex with multiple stores
- Health care provider offices where patients receive treatment, including medical and dental practices
- Transportation terminals such as bus stations, train depots, and airport passenger terminals
- Any additional facility types the Attorney General designates
The reasoning behind these carve-outs is that a person with a disability who needs to visit a specific doctor or catch a specific train can’t simply go somewhere else. Congress decided the exemption shouldn’t apply where inaccessibility would deny the service entirely.2ADA.gov. ADA Standards for Accessible Design Title III Regulation 28 CFR Part 36 1991
What Counts as a Story
The three-story threshold depends on the ADA’s specific definition of a story: any portion of a building designed for human occupancy between the upper surface of one floor and the upper surface of the floor or roof above it. A basement that has lighting, ventilation, and a way out counts. A basement used only for mechanical equipment or storage does not.3U.S. Access Board. Chapter 4: Accessible Routes
Mezzanines are handled separately. A mezzanine is an intermediate level whose floor area cannot exceed one-third of the room it sits in, and it doesn’t count as a story for purposes of the three-story threshold.4ADA.gov. 2010 ADA Standards for Accessible Design – Section 106 Definitions Once a building does have to have an elevator, though, that elevator must also serve any mezzanines.
Apartments and Condos: The Fair Housing Act
Multifamily housing follows the Fair Housing Act rather than the ADA. The FHA covers buildings with four or more units designed and built for first occupancy after March 13, 1991. Whether an elevator is present changes what has to be accessible inside the building.5Office of the Law Revision Counsel. 42 USC 3604 – Discrimination in the Sale or Rental of Housing
In an elevator building, every unit on every floor has to meet the FHA’s accessible design rules: doors wide enough for a wheelchair, accessible routes through the unit, reachable environmental controls, reinforced bathroom walls for future grab bars, and usable kitchens and bathrooms. In a building without an elevator, only ground-floor units have to meet those rules.
That distinction turns the elevator decision into a design decision with consequences beyond vertical circulation. Adding an elevator to a four-story walk-up isn’t just about getting people upstairs; it converts every unit in the building into an accessible-design unit.
Mixed-Use Buildings
Buildings that put shops or a garage on the ground floor and apartments above are common, and they sit under both statutes at once. Under the FHA, if dwelling units at grade level sit above shops or parking, that level is the “ground floor,” and only those units have to meet accessibility requirements. Upper-floor units in a building whose elevator does not serve residential floors are not covered.6U.S. Department of Housing and Urban Development. Fair Housing Act Design Manual
Add an elevator that travels to any floor with dwelling units above ground, and the whole building becomes an “elevator building” under the FHA. Every unit then has to comply. One exception: an elevator installed only to connect a garage or lobby to a ground-floor level of dwelling units does not, by itself, convert the building into an elevator building.
The commercial portion of the same building still has to meet the ADA independently, including the three-story rule. Where the two statutes overlap, the more restrictive requirement controls.
Existing Buildings You Own Today
The ADA does not force existing buildings to meet new-construction standards retroactively. Instead, public accommodations have to remove architectural barriers where doing so is “readily achievable,” meaning easily accomplished without much difficulty or expense.7eCFR. 28 CFR 36.304 – Removal of Barriers
Installing an elevator is not one of the federal regulation’s 21 examples of readily achievable barrier removal. That’s deliberate. Elevator installation is expensive and disruptive, and the readily achievable standard is meant to capture the easy fixes. For most existing buildings, adding an elevator won’t qualify, though the analysis is case-by-case and takes the business’s size and resources into account.
When full removal isn’t readily achievable, the law still expects alternatives. For a two-story shop without an elevator, that might mean bringing merchandise or services down to the ground floor for customers who can’t get upstairs.
When a Renovation Triggers an Elevator
Two kinds of renovation work can bring an elevator requirement to a building that didn’t have one before.
Adding Stairs or an Escalator
If an alteration adds stairs or an escalator where none existed, and it involves major structural work, the project also has to provide an accessible route between the levels the new stairs or escalator serve. That usually means an elevator. The logic is that a project doing enough structural work to install a staircase can incorporate an elevator at the same time.8U.S. Access Board. Chapter 2: Alterations and Additions
Altering a Primary Function Area
When you renovate an area where the building’s main activities happen (a sales floor, a dining room, an office area, an exam room), you also have to provide an accessible path of travel from that area to the entrance, restrooms, and supporting spaces. If the altered area is on an upper floor, an elevator may be part of that path. The cost of the accessible path is capped at 20% of the total cost of the alteration to the primary function area.8U.S. Access Board. Chapter 2: Alterations and Additions
There’s also an out for structurally impossible situations. Compliance is not required where it is “technically infeasible,” meaning existing structural conditions would require removing load-bearing members or other physical constraints stand in the way.9U.S. Access Board. ADA Scoping: Alterations and Additions Even then, you have to comply to the maximum extent that is technically feasible.
Historic buildings get more flexibility. Where full compliance would threaten a building’s historical significance, the owner consults with the State Historic Preservation Officer on acceptable alternatives.
Smaller Alternatives to a Standard Elevator
Not every building that provides vertical access needs a full passenger elevator. The ADA Standards recognize two smaller options, each with limits on where it can be used.
Limited-Use/Limited-Application (LULA) elevators are smaller, slower, and cheaper than standard passenger elevators. They’re allowed in buildings where an accessible route between stories is not actually required, such as a two-story office that falls under the three-story exemption but wants to provide some access anyway. They can also stand in for a platform lift or a private residence elevator. A LULA cannot substitute for a standard elevator in a building that is required to have one.10U.S. Access Board. Chapter 4: Elevators and Platform Lifts
Platform lifts are more restricted. In new construction they can serve as part of an accessible route only in specific spots: wheelchair spaces in assembly areas, performance stages, incidental spaces with no more than five occupants, raised courtroom stations, and levels inside hotel guest rooms or residential units. They’re also allowed where topography or site constraints make a ramp or elevator infeasible. Existing buildings being altered have broader permission to use them. In no case do platform lifts substitute for a required passenger elevator.
State and Local Codes Often Go Further
Federal law sets the floor, not the ceiling. Every project also has to meet state and local building codes, and those frequently demand more than the ADA. Most states adopt some version of the International Building Code, which contains its own accessibility rules and its own small-building exemption, but jurisdictions modify the model code when they adopt it.
A local code might require an elevator in a two-story building, drop the square-footage exemption, or reach building types the ADA doesn’t specifically address. Where federal and local rules overlap, the more protective one wins. A state or local rule that offers less protection than the ADA is preempted; a stricter one stands.11ADA.gov. 2010 ADA Standards for Accessible Design Check with your local building department before you finalize drawings.
What Happens if You Skip a Required Elevator
Leaving out a required elevator is not a problem that stays quiet. Private individuals can sue under Title III of the ADA for a court order forcing the building to be made accessible. Private plaintiffs cannot collect monetary damages, but a prevailing plaintiff can recover attorney’s fees, and those fees add up quickly.
The Department of Justice can bring its own enforcement actions and seek civil penalties. As of the inflation adjustment effective July 2025, the maximum penalty for a first ADA violation is $118,225, and $236,451 for a subsequent violation.12Federal Register. Civil Monetary Penalties Inflation Adjustments for 2025 These figures adjust upward each year.
On top of federal enforcement, a building that doesn’t meet code won’t pass inspection, which means no certificate of occupancy and no opening day. Retrofitting an elevator into a finished building costs substantially more than installing one during construction, both in direct expense and in lost revenue while the building sits empty.
Tax Offsets for Accessibility Work
Two federal tax provisions can take some of the cost out of an elevator project.
Small businesses with either gross receipts under $1 million or no more than 30 full-time employees can claim the Disabled Access Credit, worth 50% of eligible accessibility spending between $250 and $10,250 per year. The maximum annual credit is $5,000.13Office of the Law Revision Counsel. 26 USC 44 – Expenditures to Provide Access to Disabled Individuals A full-time employee for this purpose is one who works at least 30 hours per week for 20 or more calendar weeks in the tax year. The credit is claimed on IRS Form 8826.
Any business, not just a small one, can also take the Architectural Barrier Removal Deduction of up to $15,000 per year for expenses related to removing barriers for people with disabilities or the elderly.14Office of the Law Revision Counsel. 26 USC 190 – Expenditures to Remove Architectural and Transportation Barriers to the Handicapped and Elderly The credit and the deduction can be used together in the same year, as long as they aren’t applied to the same dollars. On a six-figure elevator project, they won’t come close to covering the bill, but they take some of the edge off.