Explain and state legal basis for the answer (long answer very much appreciated)

Topic:Nature and Effect of Obligation

1.Maria and Clara bought a prime lot in Dasmarinas Village, where they decided to have a house built for family they were going to raise. A big fence was temporarily built around the property to avoid the construction from getting interrupted and to prevent neighbours and outsiders from taking pictures of its process. The construction of the 3-storey house commenced and was completed in 6 months. When the fence was about to replaced by permanent gates, the village association officials of Dasmarinas Village saw 3-storey house for the first time. The Dasmarinas Village Association immediately presented the rule to Maria and Clara which limited the size or height of the residence to two stories. In this situation, what are the obligation of Carlo and Dawn

2.On Oct 5, 2018, mark obliged herself to deliver her car to John on Nov 19, 2018. No demand was made John for the delivery of car. Thus, mark did not deliver her car. onNov 20, 2018, mark parked at a street parking lot. Suddenly, mark's car was hit accidentally by a drunk stranger man. The was totally wrecked. On Nov 22, 2018, John demanded the value of car as well as the damages.mark claimed that John has no liability as the car was destroyed by fortuitous event. Is Elizabeth correct?