I might advise increasing that to $500K or $1 Million as the cost difference should be negligible and if you do have a liability claim where someone is injured, the costs can escalate pretty quickly depending upon the severity of the injury. 

After reading through the HOA's insurance's policy, I found that the policy is called "Business Owner's Policy" and below is the summary page of the policy:"General LiabilityGeneralAggregateLimit(OtherThanProducts-CompletedOperations) $4,000,000Products-Completed Operations Aggregate Limit $2,000,000Personal And Advertising Injury Limit INCLUDEDEach Occurrence Limit $2,000,000Fire Damage Limit $50,000 PER OCCURRENCEMedical Expenses Limit $5,000 PER PERSONHired Auto INCLUDEDNonowned Auto INCLUDEDAccounts Receivable $25,000Employee Dishonesty $10,000 PER OCCURRENCEElectronic Media and Records $10,000Fine Arts $10,000Money & Securities $10,000 Inside/$2,500 OutsideValuable Papers and Records $25,000"One quick question is that how i can tell if this is an appropriate HOA's insurance.

& if you use contractors to do any work on the property check their coverage for workers comp/injuries.We just had fellow investor land in a lot of trouble with an injury on-site where the guy was working off the books for a contractor friend.good luck.

My question is if I buy a piece of raw land with the intention of hiring my own architect/contractor to build and oversee, am I liable for any injuries that happen on the work site?

-Liability: If they get injured improving your property, and they aren't licensed, bonded and insure, their kids might come after you for injuries!

No injury but, no witnesses though so they are sueing us because the bars on the railings should have be 4" instead of 5".

By this listing, Resident agrees to be fully liable for damages and injuries to property and/or people, which might be caused by pets.

To add insult to injury, FCI  (their servicer) charged me $30 each month to do an ACH withdrawal because I had my loan set up on autopay.  

These insurance covers damages to your property from fire, hai and other damages.Also covers legal fees due to injury claims or property damage occurring.

most investors do not know this, but if you hire a company to do work at your job site, and someone is injured and does not have work comp insurance, YOU are responsible for their injuries.