I am a Realtor at Dilbeck in La Canada and I can say with certainty that a guest house that is built with permits is an added feature that would add value to your home. It most likely in this market would not be a dollar to dollar value, but I can say that many people find a guest house to be a great amenity and I have had several clients who desire this feature. Depending on the zoning of your neighborhood the guest house may or may not be able to be considered a legal rental, but in an era where many people are now desiring the extended family to live together, a guest house provides a great option. I hope this has been helpful. If you would like to talk further I would be happy to help!
Sue Eller Realtor Dilbeck GMAC (818) 668-4005 firstname.lastname@example.org