Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
Sometimes a sudden housing need arises due to an aging family member moving in or an urgent displacement. An emergency ADU service prioritizes fast-track permitting and streamlined construction schedules to get a habitable space ready as quickly as local laws allow. You need this when immediate, safe housing is non-negotiable and you cannot wait for the typical lengthy development process. We work to find the most efficient path forward for your specific situation. Exact pricing confirmed free on the call.
Frequently asked in Lewisville
What's involved in finding a good ADU builder in Lewisville?
Tell me more about accessory dwelling units as ADUs.
Accessory dwelling units, often referred to as ADUs, are secondary housing units on a single-family lot. They can provide independent living spaces for family members or renters. In Lewisville, ADUs are becoming a popular way to add value and flexibility to existing properties. They offer a solution for multi-generational living or generating rental income.
What are the general requirements for ADU housing in Lewisville?
What kind of permit cost should I expect for an accessory dwelling unit?
The permit cost for an accessory dwelling unit in Lewisville can vary based on the project's scope and complexity. It typically includes review fees and inspection charges. It's best to get a detailed breakdown from the local building department or the contractor you work with. We can help you get a comprehensive quote that includes an estimate for these fees.
What services do accessory dwelling unit services typically cover?
What's the difference between a detached and attached ADU?
A detached accessory dwelling unit is a standalone structure on your property, like a backyard cottage. An attached ADU, on the other hand, is integrated into the main house, perhaps as a basement conversion or an addition. Both offer independent living spaces, but the construction and integration methods differ. Your choice depends on your property and preferences.
What does accessory dwelling unit construction involve?
Also serving nearby: Carrollton · Frisco · Plano · Irving · Denton
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Lewisville — population 133,553; about 3,284 residents per square mile across 40.7 sq mi. ZIP codes covered include 75029, 75057, 75067, 75077.
Neighborhoods served in Lewisville: Old Town Lewisville, Castle Hills, Woodbridge, The Reserve at Lake Lewisville — and every surrounding area.
Areas we serve
Browse by state, then city.
