Can HOA and monthly regime fees increase
An interesting ask the agent question. Can HOA and monthly regime fees increase in future years.
I was showing properties recently to a couple from out of town and they weren't familiar with annual fees for Homeowner Associations (HOA) or monthly regime fees for townhomes and condos and what was included. But the more important question they asked regarded whether those fees could ever increase.
The short answer is yes.
The short reason is inflation. Costs may in fact increase over time. Sure the government statistics tell us that inflation isn't really all that bad, they have contrived an index excluding food and energy called core inflation which excludes those basic needs because they are too volatile. The latest government report also highlighted seasonal adjustments for gas and the net result of that was that the price of gas actually went down last month
(but we all know better don't we.) 
So you should figure that costs will increase over time (and hopefully not too fast).
The HOA sets a budget for the year and bills the homeowners an annual fee. This takes care of the neighborhood including landscaping of the common areas as well as maintaining the clubhouse, pool, playgrounds, tennis courts and other amenities available to the homeowners. The HOA generally makes a contribution to a reserve account to save for scheduled capital improvements when they become necessary.
A monthly regime fee is common when purchasing a townhome or a condominium. The regime fee may or may not cover insurance on the exterior of the building, flood insurance or termite bond but it will generally always cover the maintenance of the exterior of the building and any landscaping offered for the specific units as well as common areas. You may pay a monthly regime fee for your unit as well as an annual HOA for the community.
Let's just use the price of gas as an example. Most HOA's set their annual budgets when gas cost $3 per gallon and signed contracts with landscaping companies. With today's price edging closer to $4, you can bet that those companies will be forced to raise their price next year and if that is the case, the HOA fees would have to increase as well. The community will do their best to negotiate the very best price for landscaping services but since the cost of gas impacts everyone, it's likely that everyone will be charging more next year. The bottom line to you, the monthly and annual fees can increase if the associated cost increases.
When you buy a home with a 30 year fixed rate mortgage, you can be assured that your monthly payment for principal and interest will not change over the course of the loan. But if insurance and taxes increase, your monthly payment will of course increase as well.
Don't forget that the homeowners have a say in the management of their community. Read more about homeowners associations at wikipedia.