ADU and DADU Construction Services by United Signature
United Signature is a Seattle-based contractor specializing in the design and construction of Accessory Dwelling Units (ADUs) and Detached Accessory Dwelling Units (DADUs). As housing costs rise and the demand for flexible living spaces grows, more Seattle homeowners are exploring ways to make better use of their existing properties — and United Signature works to help them do exactly that.
An Accessory Dwelling Unit (ADU) is a secondary living space located within a single-family residential lot. These units can function as separate living areas, home offices, entertainment spaces, or workspaces, each with their own entrance. A Detached Accessory Dwelling Unit (DADU) takes this a step further by providing a fully self-contained structure on the property, offering greater privacy and independence from the main residence.
What ADUs and DADUs Can Offer
Both ADUs and DADUs serve a range of practical purposes for homeowners. Some of the key benefits include:
- Versatile use of space — Units can be configured as a home gym, studio, office, playroom, entertainment center, or guest suite.
- Rental income potential — Homeowners can rent out their ADU or DADU to generate additional income and recoup their investment over time.
- Multi-generational living — These units are well-suited for accommodating grandparents, extended family members, or college-aged children, while still maintaining separate living spaces.
Whether the goal is a granny flat, a backyard cottage, an in-law suite, or a detached ADU for rental purposes, United Signature handles the full scope of the project from initial design through to completion.
Their Construction Process
United Signature works with clients through a structured process that includes custom design planning, material selection, project management, and permitting. Their team manages all aspects of regulatory compliance to ensure that each ADU or DADU meets local codes and standards in the Seattle area.
The company places emphasis on using quality materials sourced from established vendors and manufacturers. Project management is handled with attention to timelines and budgets, aiming to keep projects on track throughout each phase of construction.
United Signature also provides ongoing support to clients throughout the project, from the initial consultation to the final build. For homeowners looking to understand potential costs upfront, they point to a project cost calculator tool to help with budgeting and planning.
For those concerned about financing, United Signature offers financing options through Enhancify, making it more accessible for homeowners to move forward with an ADU or DADU project without needing to cover the full cost upfront. This financing option extends to other home remodeling services as well.
United Signature has completed a range of ADU and DADU builds across the Seattle area, with a portfolio available for prospective clients to review. They also maintain a blog covering topics related to home remodeling and ADU construction trends.