Modular Accessory Dwelling Units by Westchester Modular Homes Inc.
Many municipalities throughout the Northeast now permit accessory dwelling units (ADUs) as secondary housing on single-family residential lots. An ADU is defined by its nature as a smaller, secondary unit situated on the same lot as a primary home. Westchester Modular Homes Inc. currently offers a stand-alone modular ADU called the East Island, which functions as a self-contained mini-home.
ADUs can take a variety of physical forms, including:
- Basement built-outs
- Garage conversions
- Apartments above garages or workshops
- Addition and bump-out ADUs
- Internal ADUs
- Detached backyard structures
It is worth noting that tiny homes, mini-homes, cottages, guest houses, and vacation or glamping units placed on their own separate building lots are not classified as ADUs and are subject to different regulations. These structures still require permits and must comply with local zoning and building codes.
Key Requirements for Building an ADU
Anyone considering an ADU should be aware of several important requirements before moving forward.
Permits are always required when constructing habitable living space. Non-habitable structures under 200 square feet may sometimes be exempt, but this varies by municipality. For any ADU project, the property owner or their ADU contractor must obtain a building permit and adhere to local building codes.
A kitchen and bathroom are mandatory. These are two of the defining features that distinguish an ADU from other habitable spaces such as a home office or guest room. Additionally, an ADU must have its own separate, private entrance. While it may include access to the primary dwelling, it cannot be accessible only through the main home, nor can it be open to the primary dwelling without a reasonable expectation of privacy.
Many ADUs share power and water utilities with the primary home, though they can also have independent utility connections depending on the setup and local requirements.
Does an ADU Add Property Value?
Generally speaking, an ADU does add value to a property. However, the exact amount is difficult to quantify universally. Professional appraisers typically rely on recent comparable sales data to form their opinion of value, and the contributory value of an ADU can vary considerably depending on location, size, and market conditions.
Westchester Modular Homes Inc. operates as an accessory dwelling unit builder serving the Northeast, offering modular construction as a practical path to adding a detached ADU or backyard cottage to an existing residential property. Their modular approach provides a structured building process, though prospective buyers should always verify local zoning allowances and permit requirements before proceeding with any ADU project.