@Kevin Lin Based on the price, I’m assuming the land is not in a sub-division with covenants and building restrictions already in place that will protect you now and in the future. That being said, the seller still has the duty to disclose to you if the subject property is located in earthquake zones, potential flood areas, or fire hazard areas, but that’s assuming they know. The way around that for the seller is making the contract state "as is" leaving you the responsibility to determine the land's fitness for a particular use. Just because it's zoned for residential doesn't mean you automatically have the authorization to put a house there. One of the biggest problems you may face is waste water. If you don't have public sewer access, then you must rely upon onsite disposal and that can be limited by the soil types on your land, the size of your parcel, onsite well for water, conservation area requirements, set-backs, and the county health department or State environmental department granting a permit for onsite septic. If you do have access to public sewer, then you still have to get a permit from the utility and pay a tap fee which could be expensive.
Another consideration is the path of progress and its impact on the surrounding land. You’re waiting until retirement, not knowing when that it is, the path of progress could bring positive or negative effects to your land in the coming years. For example, consider logging that could change the landscape drastically, or surrounding area rezoned from residential to light industrial or other use. Some changes could make the land more valuable and you simply sell it, or the changes may disrupt your retirement plans.
Considering the small price tag, you probably don’t need a realtor, the seller isn’t likely inclined to pay realtor commission, and it’s probably not worth a realtor’s trouble. Land in my area represented by a realtor often has a 10% commission. For a 5-10k price, there’s probably not many realtors willing to put in the time to make so little. The title search and insurance should be done and clean title be contingent for closing. Again, the price tag is small, but relieve yourself of headaches down the road. As for a survey, you will easily spend $1000 if not more, especially if the land is out in BFE , heavily wooded, or has other difficult features. The metes and bounds should be on the existing deed registered with the county. Depending on the size of the parcel, you may be able to go there and find the corner markers simply by using the deed description, a metal detector, and estimate the distances with your steps. As for closing costs, you’ll likely be paying for it. For the closing, you can get an attorney to draft a purchase agreement, and take care of the whole process. In the end, you’re likely to be paying several thousand dollars in addition to the purchase price. Good luck!