Southern Burlington County N.A.A.C.P. v. Township of Mount Laurel

Zoning is an exercise of the State's police power, delegated to municipalities. It must promote the general welfare and comply with the substantive due-process and equal-protection guarantees embodied in Article I, paragraph 1 of the New Jersey Constitution. Because adequate shelter is a basic human need, housing opportunities are a matter of fundamental public welfare rather than a merely local concern.

The relevant general welfare is not confined by municipal boundaries. When a zoning decision has substantial effects outside the municipality, local officials must consider the welfare of the region and the State. Municipal borders are artificial lines that cannot control the practical pattern of residential growth, employment, transportation, and housing need.

Mount Laurel's ordinance supplied a facial case of invalid exclusionary zoning. It generally allowed only detached single-family homes, barred other less costly housing forms, required large lots and substantial homes, and set aside an excessive amount of land for industry. These choices made affordable housing economically infeasible and shifted to the township a heavy burden to justify its restrictions.

The township could not justify exclusion by invoking the local tax consequences of lower-cost housing. A municipality may reasonably seek commercial and industrial ratables as part of a comprehensive plan, but it may not manipulate residential zoning to exclude households thought likely to require more public services or generate more school costs. Relief from the State's property-tax structure must come from other governmental institutions, not through fiscal zoning.

Environmental and infrastructure concerns can justify land-use restrictions only when the danger is real and substantial and the regulation is reasonably necessary to protect a vital interest. Mount Laurel could not rely simply on the absence of sewer and water facilities to preserve half-acre, single-family development where the land was suitable for utilities and the township could require or finance their installation.

The severe shortage of affordable housing and the regional movement of people and jobs mean that a municipality cannot satisfy its public-welfare obligation by considering only present residents or persons already connected to the township. A community that benefits from regional growth must account for housing needs created across the relevant housing market.

Each municipality need not absorb all regional need. Different locations may be better suited to particular housing types because of available land, employment, transportation, or other significant factors. But because New Jersey zoning remained principally municipal rather than regional, every developing municipality had to bear its fair share unless binding regional arrangements or special circumstances justified another allocation.

The relevant region depends on the facts. For Mount Laurel, the Court identified the pertinent area as portions of Camden, Burlington, and Gloucester Counties within roughly a twenty-mile semicircle from central Camden. Planning experts and state and county agencies could help determine the township's fair-share number and translate it into sufficient appropriately zoned land.

The Court did not prescribe one uniform housing form or a fixed zoning formula. But Mount Laurel had to permit multifamily housing without bedroom restrictions, small dwellings on very small lots, and other lower-cost and higher-density housing types sufficient to serve its fair share. If the township authorized planned-unit developments, their residential mix ordinarily should include a reasonable amount of low- and moderate-income housing unless adequate opportunity already existed elsewhere in town.

Bedroom limitations directed at discouraging families with children are contrary to the general welfare. Likewise, a municipality that zones for industry and commerce for tax benefits must permit housing within the means of employees of those uses. Land reserved for nonresidential development must be reasonably related to the actual present and future potential for such development.

The Court did not decide the full scope of a municipality's authority to time growth. It stated only that even if timed growth can be valid in some circumstances, it cannot be used to halt development, exclude lower-income households, or postpone affordable-housing opportunities indefinitely.

The Court rejected total invalidation of the zoning ordinance because only particular features and omissions made the scheme unlawful. It left the details of corrective zoning to the township in the first instance, subject to the Court's substantive guidelines and to a supplemental challenge by plaintiffs after the amendments were adopted.

Courts and municipalities do not themselves build housing; private developers, nonprofit organizations, and specialized public agencies generally do that work. The municipality's immediate legal duty was to create a genuine opportunity for housing through proper land-use regulation, not necessarily to construct housing directly.

The Court declined at this stage to define the outer boundaries of judicial authority to compel affirmative housing measures. It expected Mount Laurel to act in good faith, including by taking additional steps that might encourage fulfillment of its fair share, and preserved the ability of plaintiffs to seek further judicial relief if the township failed to comply.