Walt purchased a 2875 square foot lot on the corner and Roy purchased the lot next door. The lots cost about $1000 each, and they both bought Pacific Ready-Cut homes for their lots. Pacific Ready-Cut homes were ready-to-assemble and shipped to the site, complete with knotless Douglas Fir framing, cabinets, nails, doors, windows, screens, hardware, paint, sinks and an instruction manual. Pacific Ready-Cut had built a dozen model homes in 1922 and eventually sold over 37,000 houses in Southern California.
Walt's home was 2 bedrooms, 1 bath and 1066 square feet. Roy's home was the mirror image of Walt's. The homes arrived at the Disney's lots in 12,000 pieces via boxcar in August 1926. By the time construction was done in December, the two homes cost the brothers about $8000 each, including the lots. When Walt and Lillian moved to Woking Way in 1932, a co-worker moved into Walt's house. That's Walt's house with the green roof.
Source : Bell Curve of Life
It was in the garage of this house that Walt, Roy, and Ub Iwerks secretly worked on Mickey Mouse cartoons while they were still under contract with Universal Studios for Oswald.
Growing up in Los Angeles in the 70s/80s we visited Disneyland on a regular basis and often after school, before "Annual Passes".