ADU / DADU

Maximize your property’s potential with a custom-built ADU—designed for comfort, efficiency, and long-term value.
Overview
ADUs’ Benefits
Regulations
ADUs by NBE LLC
Financing
FAQ
Expand Your Home’s Potential with Accessory Dwelling Units
Accessory Dwelling Units (ADUs) and Detached Accessory Dwelling Units (DADUs) offer a flexible, high-value way to maximize your property’s functionality. Whether you need extra space for family, a private home office, or a rental opportunity, our expert team designs and builds custom, code-compliant ADUs tailored to your needs.
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ADUs’ BENEFITS

Flexible Living Space

ADUs provide an adaptable living area that can serve various purposes, such as a rental unit, guest house, home office, or living space for family members. This flexibility makes them an excellent solution for homeowners seeking extra space without the need to relocate.

Sustainable and Efficient Design

ADUs are designed to be highly energy-efficient, often incorporating sustainable building materials, advanced insulation, and modern technologies. This makes them environmentally friendly and cost-effective in the long run.

Quality & Compliance Assurance

Unlike traditional home expansions, ADUs can be built in a relatively small footprint, often in underutilized areas like backyards or above garages. This means you can maximize your property’s potential without significantly altering its exterior or disrupting your current living space.

Regulations and Permitting for ADUs in Washington State

  • Zoning and Land Use: Check the zoning regulations of your specific location to determine if ADUs are allowed on your property. Some areas may have restrictions on size, setbacks, and density.
  • Size and Design: ADUs in Washington State typically have size limitations. The maximum size allowed often depends on the square footage of the primary dwelling or the lot size. Designs should comply with building codes and architectural standards.
  • Permitting Process: To initiate the ADU construction, you must obtain the necessary permits. This involves submitting detailed plans and documentation to the local permitting department. The process may include reviews for compliance with building codes, fire safety, and utility connections.
  • Utility Connections: ADUs typically require separate utility connections, including water, sewer, and electricity. Check with local utility providers to determine the requirements and process for connecting to these services.
  • Legal Rental Requirements: If you plan to rent out your ADU, familiarize yourself with the legal requirements for rental units in Washington State, such as tenant screening, lease agreements, and landlord-tenant laws.
Learn more information about permitting and building process

ADUs BY NBE LLC

Maximize your property’s potential with a high-quality Accessory Dwelling Unit. We handle the entire process from design to construction.
Explore more
Maximize your property’s potential with a high-quality Accessory Dwelling Unit. We handle the entire process from design to construction.
Explore more
Maximize your property’s potential with a high-quality Accessory Dwelling Unit. We handle the entire process from design to construction.
Explore more

Financing

At NBE LLC , we understand that financing a construction project can be a significant investment. That’s why we offer financing support to help make your vision a reality, without the financial burden.

We work with trusted partners to provide flexible financing options tailored to your specific needs.  

We guide you through the entire process, helping you understand the various loan programs and ensuring you're set up with the best terms for your project.

FAQ

How long does it take to build an ADU?
  • The timeline varies based on the complexity and size, but typically, an ADU takes 6-12 months to complete from design to final inspection, including permitting and construction phases.
What is the cost of building an ADU?
  • An ADU costs approximately $150 to $300 per square foot on average, but some ADUs cost over $600 per square foot. The average-sized ADU is between 600 and 1,200 square feet, but your building's size may vary with personal preferences.
Do I need to provide separate utilities for my ADU?
  • Depending on local codes, you may need to install separate utility meters for electricity, water, and sewer. However, in some cases, your ADU can share utilities with the main house, depending on the layout and regulations.
Can I build an ADU on any property?
  • Not every property qualifies for an ADU. Zoning laws, property size, and setbacks from property lines play a role. We’ll assess your lot to ensure it meets the requirements for an ADU build
What is the maximum size allowed for an ADU in Washington?
  • The maximum size of an ADU depends on local zoning regulations, but most jurisdictions allow up to 1,200 square feet for a detached ADU. The exact size may vary by location and property type.

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