All of the following events occurred in California.

In 2000 Harriet's grandfather died and left her a 100-acre parcel known as Goldenacre. Goldenacre was undeveloped land located in a rural area. In 2002 Harriet met Walter through an on-line dating service. In 2005 Harriet and Walter were married.

Harriet and Walter have been living on Harriet's earnings from her job as a college professor. Walter's earnings from his job as a mechanic for Urban Motors were placed in a savings account in his name alone.

In 2008 Walter's uncle, who was also a mechanic, died and left him ownership of his auto repair shop. Walter immediately quit his job at Urban Motors and began sole management of the auto repair shop. Because of Walter's expertise, the auto repair shop flourished.

In 2010 Harriet contracted in her name alone with a builder to construct a cabin on Goldenacre. Harriet paid the builder $1,000 per month for 10 months from her earnings.

In 2013 Harriet and Walter decided to separate. An independent analysis determined that Goldenacre was worth $100,000 in its undeveloped state, and that the cabin built in 2010 had increased the value of Goldenacre by $25,000. The analysis also determined that the auto repair shop was worth $50,000 in 2008 and is now worth $100,000.

What are Harriet's and Walter's respective rights in:

1. Goldenacre? Discuss.
2. The savings account? Discuss.
3. The auto repair shop? Discuss.