Welcome, Arlington County residents! We’re happy to help you get started with your residential planning and building needs. We’ve highlighted some of the most common and popular projects below, and you can find a complete list here. In addition to browsing projects, you’ll also find all the resources you need to begin and successfully complete your project, including forms and checklists, frequently asked questions and a glossary of terms, all to make your Building Arlington experience as efficient and informed as possible.