There are different factors to consider when purchasing real estate, and the advantages and disadvantages would depend on your specific needs and preferences. However, some general advantages and disadvantages of purchasing real estate in the city of Tehachapi, California, are:

Advantages:
- Lower cost of living compared to other cities in California, making it attractive for those on a budget.
- Beautiful natural environment with views of mountains and plenty of outdoor activities.
- Good schools and a vibrant arts community.
- Growing job market, especially in the aerospace industry with the nearby Mojave Air and Space Port.
- Relatively slower pace of life compared to larger cities, offering a more relaxed lifestyle.

Disadvantages:
- Limited shopping and dining options compared to larger cities.
- Limited access to healthcare services, as the nearest hospitals are located in Bakersfield, around 30 miles away.
- Some areas of Tehachapi are highly affected by recent wildfires.
- Variable weather conditions with hot summers and cold winters.
- Limited public transportation options, which may be a disadvantage for those who do not own a car.

Overall, Tehachapi can be a great place to live and purchase property, especially for those who value nature, a relaxed lifestyle, and a growing job market. However, its limited resources and the fact that it may not be suitable for everyone will have to be taken into account as well.