By accessing or using the Nationwide ADU website at nationwideadu.com, you agree to be bound by these Terms of Use. If you do not agree, please do not use this site.
The Nationwide ADU cost calculator and all associated content are provided for educational and informational purposes only. You may use this site for personal, non-commercial planning purposes. You may not:
The cost estimates, feasibility assessments, and regional data provided by this tool are for illustrative planning purposes only. They do not constitute:
Always consult licensed contractors, architects, attorneys, and financial advisors before making construction or investment decisions.
We make reasonable efforts to maintain accurate, current cost data across all 50 states. However, construction costs, permit fees, and regulations change frequently. All estimates carry a ±15% variance and may not reflect current market conditions in your specific municipality. Nationwide ADU makes no warranty, express or implied, regarding the accuracy or completeness of any information on this site.
To the maximum extent permitted by law, Nationwide ADU and its operators shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of this site or reliance on any information provided herein. Your sole remedy for dissatisfaction with the site is to stop using it.
This site may contain links to third-party websites, including contractor services and affiliate programs. We do not endorse and are not responsible for the content, privacy practices, or services of any third-party sites.
All content on this site, including the calculator logic, written guides, cost data tables, and design elements, is the property of Nationwide ADU and is protected by applicable copyright law. Unauthorized reproduction is prohibited.
These Terms are governed by the laws of the State of Washington. Any disputes shall be resolved in the courts of King County, Washington.
We reserve the right to modify these Terms at any time. The effective date will be updated accordingly. Continued use of the site constitutes acceptance of any revised Terms.
Questions about these Terms may be directed to support@nationwideadu.com.