My first thought was sell to lock in your tax free cap gain.

Well, if the FMV of the house is at or near $300k based on reasonable comps, and there's no legitimate benefit to the client's offer (i.e. all cash, fast closing, no contingency, whatever), I'd probably quit working with them because there's really little to gain working with cheapskates and bums who just want to steal other people's property.

Some strategies to consider:Networking with wholesalers: Many off-market properties don’t make it to the MLS, so connecting with wholesalers who operate in OKC can be a great way to access these deals.

Access roads and if multiple are needed for each unit.City regulations and zoning.Impervious cover requirements or percentage across the whole lot.Drainage per units built. 

Even if things don’t go perfectly, you’ll gain valuable experience that will help you with your next project.

So if you have any additional gain left over after taking the 121 exclusion, including the depreciation recapture, you can shelter the rest in a 1031 exchange.

If you had a locked door or no access to that area that would typically suffice.

You can't compete against the all-inclusives unless you offer complimentary food and booze or you're cheap, as you seem to be confirming.This being said:1) Properties in Mexico/Cancun trade in USD so you have no foreign exchange risk in Mexico while properties in Colombia are traded in COP, the Colombian peso, which has been tanking over the years, eliminating any hope for capital gains for American investors.2) You can get a mortgage in Mexico but you can't in Colombia so even with lower revenue, Cancun would likely still be more profitable, even if you don't take capital gains into account.3) The political risk is much higher in Colombia, especially at this present time.Is Cartagena a bad investment?

This quick profit flip highlighted our expertise in identifying high-potential properties and executing rapid sales for substantial gains in Pleasant Hill’s thriving market.

He self-manages, is his own handyman and had to pull out the little equity he gained to pay for roofs and HVAC.