Good Morning! Wow, nice to see someone doing research before jumping in. Because we as Agents do not specialize in these matters, I would suggest you call the City of Del Mar and ask for the code enforcement desk. You can get your correct and up to the moment code information. Should you purchase a home and decide to make changes, you could possibly open a can of worms. The city must be involved and you cannot be sure how far you will have to go. Once you begin to make changes, the city will require you to change everything that needs to be brought to code. Nice picture! Where were you? I enjoy golfing, when I am not taking care of my kids.... I guess that means I get out rarely. ;-) Feel free to call or email me with any questions. You may also look up information on the City of Del Mar web site.