Federal Requirements That Apply to Every US Property

When planning a construction project, most people think about local zoning and building permits. But an entire layer of federal regulation sits above everything your city or state requires. These federal rules cannot be waived or overridden by local government, and failing to comply with them can result in fines, project shutdowns, and legal liability.

This guide covers the five major areas of federal regulation that affect property development across the United States.

FEMA Flood Zones and Insurance

The Federal Emergency Management Agency maps flood risk nationwide and administers the National Flood Insurance Program (NFIP). FEMA's regulations are among the most consequential federal rules for property owners because they directly affect where and how you can build.

How Flood Zones Work

FEMA produces Flood Insurance Rate Maps (FIRMs) that classify every area of the country into flood zones:

• Zone A (including AE, AH, AO, AR, A99): Special Flood Hazard Areas (SFHAs) with a 1% or greater annual chance of flooding -- commonly called the "100-year floodplain." This does not mean flooding happens once every 100 years; it means there is a 1% chance in any given year, which translates to a 26% chance over a 30-year mortgage.
• Zone V (including VE): Coastal high hazard areas subject to storm surge and wave action in addition to flooding. The most restrictive FEMA zone.
• Zone X (shaded): Areas with a 0.2% annual chance of flooding (500-year floodplain). Moderate risk.
• Zone X (unshaded): Areas outside the mapped floodplain. Lower risk, but not zero risk.

What FEMA Flood Zones Mean for Your Property

If your property is in an SFHA (Zone A or V):

• Mandatory flood insurance: If you have a federally backed mortgage (FHA, VA, conventional loans purchased by Fannie Mae or Freddie Mac), you are required to purchase flood insurance. This adds $500 to $5,000+ per year to your housing costs depending on your zone, elevation, and building characteristics.
• Floodplain development permits: Before building or substantially improving a structure, you must obtain a floodplain development permit from your local floodplain administrator (usually the building department).
• Elevation requirements: New construction and substantial improvements must have the lowest floor elevated to or above the Base Flood Elevation (BFE) shown on the FIRM. In V zones, the structure must be elevated on pilings or columns.
• Substantial improvement rule: If you improve or repair a building to an extent that equals or exceeds 50% of the building's market value, the entire building must be brought into compliance with current flood standards. This can make renovating older flood-prone buildings extremely expensive.
• Construction standards: Below the BFE, enclosures must use flood-resistant materials, have openings to allow floodwater to enter and exit (to equalize pressure), and cannot be used as habitable space.

Checking Your Flood Zone

Visit the FEMA Flood Map Service Center (msc.fema.gov) and enter your address to view the applicable FIRM. Keep in mind that FEMA maps are periodically updated, and your flood zone can change. If you believe your property is incorrectly mapped, you can apply for a Letter of Map Amendment (LOMA) or Letter of Map Revision (LOMR) with supporting elevation data.

ADA Accessibility Requirements

The Americans with Disabilities Act (ADA) is a civil rights law that prohibits discrimination against individuals with disabilities. Its impact on property development comes primarily through the accessibility standards it imposes on certain types of buildings.

What the ADA Covers

The ADA's building requirements apply mainly through two titles:

• Title II applies to state and local government facilities (public buildings, parks, sidewalks, transit stations).
• Title III applies to "places of public accommodation" -- essentially any private business or facility open to the public. This includes stores, restaurants, offices, hotels, medical facilities, theaters, and many other commercial uses.

Residential properties are generally not covered by the ADA itself. However, there are overlapping requirements from the Fair Housing Act (see below) and, in some cases, Section 504 of the Rehabilitation Act (for federally funded housing).

ADA Standards for New Construction

New commercial construction and alterations to existing commercial buildings must comply with the 2010 ADA Standards for Accessible Design. Key requirements include:

• Accessible routes: A continuous, unobstructed path of travel from the site arrival point (parking, sidewalk, transit stop) to all public areas of the building. This includes ramps, elevators, and doorways with adequate width (minimum 32 inches clear).
• Accessible parking: A specific number of accessible parking spaces based on total lot capacity, with proper signage, dimensions (at least 8 feet wide with a 5-foot access aisle), and location near building entrances.
• Restroom accessibility: Accessible restroom stalls, grab bars, sink heights, and clear floor space requirements.
• Signage and wayfinding: Tactile and Braille signage, visible alarms, and accessible communication features.
• Elevator requirements: Buildings with three or more stories or more than 3,000 square feet per floor generally require an elevator (with exceptions for certain building types).

Alterations and Existing Buildings

When you alter a commercial building, the altered areas must comply with current ADA standards. Additionally, there is a "path of travel" requirement: if you alter a primary function area (like a sales floor or dining room), you must also make the path of travel to that area accessible -- up to 20% of the total alteration cost.

Existing buildings that have not been altered are not required to meet full ADA standards, but they must remove barriers to accessibility where doing so is "readily achievable" -- meaning it can be done without much difficulty or expense.

EPA Environmental Regulations

The Environmental Protection Agency administers numerous environmental laws that affect property development. The most relevant for typical property owners and developers involve wetlands, stormwater, lead paint, and asbestos.

Wetlands and the Clean Water Act

The Clean Water Act (CWA) regulates the discharge of pollutants, including fill material, into "waters of the United States." This includes wetlands, streams, rivers, lakes, and their adjacent areas. Section 404 of the CWA requires a permit from the US Army Corps of Engineers (see below) before placing fill material into jurisdictional waters -- including wetlands.

The EPA has joint authority with the Army Corps over wetlands and can veto Army Corps permit decisions under Section 404(c), though this power is rarely used. The EPA also enforces stormwater discharge regulations under the National Pollutant Discharge Elimination System (NPDES), which affects construction sites that disturb one acre or more. These sites must obtain NPDES coverage and implement a Stormwater Pollution Prevention Plan (SWPPP) to control erosion and sediment runoff during construction.

Lead Paint (Pre-1978 Properties)

Federal law requires specific actions regarding lead-based paint in homes built before 1978:

• Disclosure: Sellers and landlords must disclose known lead-based paint hazards and provide the EPA pamphlet "Protect Your Family From Lead in Your Home" before selling or leasing pre-1978 housing.
• Renovation, Repair, and Painting (RRP) Rule: Contractors performing renovation, repair, or painting work that disturbs more than 6 square feet of lead-based paint in a room (or 20 square feet on the exterior) of pre-1978 housing must be EPA-certified and follow specific lead-safe work practices. This includes containment, dust control, cleanup, and verification.
• Abatement: Full lead paint abatement (permanent removal) must be performed by licensed abatement contractors following EPA and state regulations.

This is particularly relevant for ADU conversions, home renovations, and gut rehabilitations of older properties. Non-compliance can result in fines of up to $37,500 or more per day per violation.

Asbestos (NESHAP)

The EPA's National Emission Standards for Hazardous Air Pollutants (NESHAP) for asbestos requires that before demolishing or renovating a building, the owner must have the structure inspected for asbestos-containing materials (ACM). If ACM is found:

• It must be properly removed by licensed abatement contractors before demolition or renovation work that would disturb it.
• The local air quality agency or EPA regional office must be notified before demolition of certain structures.
• Asbestos waste must be disposed of at an approved landfill.

Asbestos was commonly used in insulation, floor tiles, roofing materials, siding, and pipe wrap in buildings constructed before the 1980s. If you are renovating or demolishing an older structure, an asbestos survey is effectively mandatory.

Stormwater Management

The EPA's stormwater regulations under the Clean Water Act require construction sites that disturb one acre or more of land to obtain a Construction General Permit (CGP) and implement erosion and sediment control measures. Even smaller sites may be subject to these requirements if they are part of a larger common plan of development.

Typical requirements include:

• Silt fences, sediment basins, and erosion control blankets during construction
• Stabilization of disturbed areas within a specified timeframe
• Inspection and maintenance of stormwater controls
• Documentation and record-keeping

Many states and cities have additional stormwater requirements that go beyond the federal baseline, including post-construction stormwater management for new impervious surfaces.

Fair Housing Act and Zoning

The Fair Housing Act (FHA), enacted in 1968 and amended in 1988, prohibits discrimination in housing based on race, color, national origin, religion, sex, familial status, and disability. While it is primarily thought of as a law about selling and renting, the Fair Housing Act has significant implications for zoning and land use regulation.

How the Fair Housing Act Affects Zoning

Local zoning ordinances cannot be used to discriminate against protected classes. The Fair Housing Act has been used to challenge zoning rules that:

• Exclude group homes: Cities cannot use zoning to prevent group homes for people with disabilities (such as halfway houses, assisted living facilities, or group homes for people with mental illness) from operating in residential zones. Under the FHA, a group home of a certain size must be treated the same as any other residential use of similar size. Many courts have struck down zoning rules that single out group homes for special permitting requirements.
• Restrict families with children: Zoning rules that limit the number of unrelated people who can live together (sometimes targeting student housing or immigrant households) can violate the FHA if they disproportionately affect families with children or particular national origin groups.
• Perpetuate segregation: Under the "disparate impact" theory, zoning decisions that may be facially neutral but have a disproportionate negative effect on a protected class can violate the FHA. For example, exclusionary zoning that effectively prevents affordable housing can be challenged if it disproportionately affects minority communities.
• Deny reasonable accommodations: The FHA requires that housing providers -- including local governments -- make reasonable accommodations in rules, policies, and practices when necessary to give people with disabilities equal access to housing. A city must grant reasonable modifications to zoning rules (like setback requirements for wheelchair ramps) when needed for accessibility.

Affirmatively Furthering Fair Housing (AFFH)

The Fair Housing Act also requires that federal agencies and recipients of federal housing funds "affirmatively further fair housing." This obligation extends to local governments that receive HUD funding and has implications for comprehensive planning and zoning decisions. Jurisdictions must take proactive steps to overcome patterns of segregation and promote inclusive communities -- not merely avoid discrimination.

Army Corps of Engineers Wetlands Permits

The US Army Corps of Engineers (USACE) is the primary federal agency that issues permits for work in wetlands and other waters of the United States under Section 404 of the Clean Water Act. If your property contains or is adjacent to wetlands, streams, or other jurisdictional waters, you may need an Army Corps permit before you can build.

What Are Jurisdictional Wetlands?

Wetlands are areas where water covers the soil or is present at or near the surface for part of the year. They are identified by three characteristics:

1. Hydrology: The area is inundated or saturated by water for at least part of the growing season.
2. Hydric soils: The soil has characteristics that develop under saturated conditions.
3. Hydrophytic vegetation: The area supports plants that are adapted to wet conditions.

Not all wet areas are jurisdictional wetlands. The Army Corps determines jurisdiction based on the connection to navigable waters and interstate commerce. The scope of federal jurisdiction over wetlands has been the subject of significant legal battles, most recently the Supreme Court's Sackett v. EPA (2023) decision, which narrowed the definition of waters subject to federal regulation.

Types of Section 404 Permits

• Nationwide Permits (NWPs): Pre-authorized permits for activities with minimal environmental impact. There are over 50 NWPs covering common activities like residential developments (NWP 29), maintenance of existing structures, and minor fill activities. NWPs have specific thresholds (often limiting impact to half an acre or less of wetlands) and require notification to the Corps district office.
• Individual Permits: Required for projects that exceed NWP thresholds or have more than minimal impacts on wetlands. Individual permits involve a detailed application, public notice, alternatives analysis, and environmental review. They can take 6 to 18 months or longer to process.

The Permit Process

1. Determine if wetlands exist. Start by checking the National Wetlands Inventory (NWI) maps online. However, NWI maps are based on aerial interpretation and may miss small wetlands or show wetlands that no longer exist. A formal wetlands delineation by a qualified environmental consultant is the definitive way to establish wetland boundaries.
2. Submit the delineation for Corps verification. The Army Corps will review the delineation and issue a jurisdictional determination (JD) confirming whether the wetlands on your property are subject to federal jurisdiction and where the boundaries lie.
3. Apply for a permit. If your project will impact jurisdictional wetlands, submit a permit application. The Corps will evaluate the application under the Section 404(b)(1) Guidelines, which require demonstrating that:
   • There is no practicable alternative that would avoid wetland impacts
   • The project will not cause significant degradation of the aquatic environment
   • Appropriate mitigation will be provided for unavoidable impacts
4. Mitigation. For permitted impacts, you will typically need to provide compensatory mitigation -- either restoring, creating, or preserving wetlands elsewhere to offset the loss. This can be done through on-site or off-site mitigation, wetland mitigation banks, or in-lieu fee programs.

Practical Considerations

Wetlands permitting can add significant time and cost to a project. A formal wetlands delineation costs $2,000 to $10,000 depending on site size and complexity. Individual permits can take over a year and cost tens of thousands of dollars in consultant fees. Even nationwide permits can take 2 to 6 months.

If you are purchasing property for development and suspect wetlands may be present (low-lying areas, visible standing water, cattails or other wetland plants, proximity to streams or ponds), conduct a wetlands assessment before closing. Discovering jurisdictional wetlands after purchase can dramatically reduce the buildable area of your lot or make development infeasible.

How Federal Requirements Interact with Local Rules

Federal regulations establish a floor that no state, county, or city can go below. However, local governments are responsible for much of the day-to-day enforcement:

• FEMA: Your local building department enforces FEMA flood regulations through floodplain development permits and building code provisions. The city is a participant in the NFIP and has agreed to enforce federal standards.
• ADA: Local building departments review commercial building plans for ADA compliance as part of the standard plan check process. The Department of Justice enforces ADA violations through complaints and investigations.
• EPA stormwater: Local agencies often administer EPA stormwater permits through state-delegated programs. Your city's public works or engineering department may issue grading permits that incorporate NPDES requirements.
• Lead and asbestos: State and local health departments often administer EPA lead and asbestos programs through delegation agreements.
• Army Corps: Wetlands permitting is handled directly by the regional Army Corps district office, not by your city. However, your city may also have its own wetlands or environmental protection ordinances that add additional requirements.

The key takeaway is that checking with your local building and planning department is always the right first step, but you should not assume that local compliance is the whole picture. Federal requirements run independently and can impose constraints that your city cannot waive.