Here are some potential pros and cons to consider when buying property in Dahlgren, Virginia:

Pros:
- Dahlgren is a small, close-knit community with a population of just over 2,000 people, which may appeal to those who prefer a quieter lifestyle.
- The cost of living in Dahlgren is somewhat lower than the average for Virginia, which may make it more affordable for some buyers.
- The village is located near the Potomac River and Chesapeake Bay, which may offer opportunities for outdoor recreation like fishing, boating, and hiking.
- Dahlgren is home to Naval Support Activity South Potomac, which is a major employer in the area and may provide job opportunities for residents.

Cons:
- Dahlgren is somewhat isolated from larger cities like Richmond and Washington D.C., which may make it less desirable for those who want to be close to urban amenities.
- The village is located in a rural area, which may be less appealing to those who prefer a more urban or suburban environment.
- The property values in Dahlgren are somewhat mixed, with some properties seeing appreciation and others depreciating. It would be important to do your due diligence in researching the specific property you are interested in before making a decision.
- Like all areas, Dahlgren is subject to weather and natural disasters, including hurricanes and flooding, which could impact property values and home insurance rates.

Overall, whether Dahlgren is a good place to buy property will depend on your individual circumstances and priorities. It's important to weigh the pros and cons carefully and to do thorough research before making a decision.