An Accessory Dwelling Unit is an extra living unit on your property, complete with kitchen, bathroom and sleeping facilities. Subject to local regulations, ADUs may be located either inside, attached to, or detached from the primary home on your property. Another common term for ADU is ‘Mother in Law’ apartment. Read Seattle Times ADU article ‘Both sides can benefit in ‘Mother-in-law arrangement’. Ruston Price From: $54,900 Bedrooms: 1 Bathrooms: 1 Sq Footage: 720