West Coast Building and Design is an experienced Accessory Dwelling Unit, Custom Home and Addition Contractor in San Diego, CA, we are San Diego’s Affordable ADU Builders. Adding a ADU to your house is an affordable, practical way to provide more space for your family as well as bring in potential rental income. Room additions can be more cost-effective than many other remodeling projects. If you are looking for an affordable ADU builder in San Diego you’ve come to the right place. Call us today if you and we can give you a free consultation.