An equity share is usually presented as a way you can 'Own" much more house than you can afford. What you usually own with an ' equity share' home is stock in a US based Limited Liability Corporation (LLC). The LLC is the owner of the property and there should be a bank trust in the name of the LLC. The number of shareholders is usually set by the bylaws of the LLC. The use of the property is defined and controlled by the bylaws of the LLC and is usually an equal fraction of a 52 week, or 365 day year for each shareholder. So if there are 12 shareholders, each would have the use of the property for 30 days abaout one month per year, this called a "12 share" . 1/8 share, 52 divided by 8 = 6.5 weeks, etc. Usually also there is a short period of time that the property is reserved for regular annual maintenance so that the number of share days does not add up to 365.
The cost of each share should reflect a fraction of the value of the property, so if a 1/8 share cost $50,000 it indicates the value of the property is $400,000. As the value of the property changes, the cost of the shares should change, but usually probably doesn't . An 1/8 equity share property might have appraised at $500,000 4 years ago but at $350,00 in todays market, a drop in value of $150,000 or almost $20,000 per share.
Mexican Hacienda (IRS) has been looking at LLC ownership since it is used as a means to avoid paying capitol gains tax. If a 1/8 share sold for $100,000 originally and then recently for $150,000, there is a capital gains liability on $50,000 which goes unpaid in an LLC since what is sold are the shares in the LLC, the property ownership as indicated by the Bank Trust does not change. Since it is a US LLC and all transactions are done in the US, at this juncture the Hacienda has no way to keep track of the sale. They are not happy about this because they are desperate for money.
You can also expect to participate in an HOA type organization comprised of your fellow shareholders in the LLC to make decisions about the property, use, improvements, repairs and modifications. You will have to cooperate with your fellow shareholders and compromise as needed. You will also have a designated management company to maintain the property, schedule use, clean, etc. You will have a monthly cost for all this, probably averaging more than an HOA payment for a Sandy Beach condo. If you are in an 1/8 share equity and the AC units require replacement, expect to pay 1/8 of the cost of that repair. Majority agreed upon replacement of linnen, flatware, dishes, furniture, etc, expect to pay 1/8 of the cost. If you are the poorest shareholder this could be a problem.
I was visiting with an owner of an equity share recently and he was complaining about the management company because they never submitted itemized bills for work done, placed the furniture where they wanted, not the owners, removed furniture put in by the owners, etc. Apparently the shareholders gave him the permission to do as he pleased through his management contract.
So, before you buy an equity share: 1. Examine the Bank Trust. 2. Examine the management company's agreement. 3. Have an attorney review the LLC papers. 4. Examine the HOA agreement. 5. Have deep pockets !