This can lead to additional corrosion w/in the pipes, possibly leading to premature failure of the heat exchanger, which is not inexpensive to fix as I just fixed one on one of my properties.Assuming you're on gas, you could (imo: should) install a condensing gas boiler.

(a) A real estate broker within the meaning of this Chapter is any person, partnership, corporation, limited liability company, association, or other business entity who for a compensation or valuable consideration or promise thereof lists or offers to list, sells or offers to sell, buys or offers to buy, auctions or offers to auction (specifically not including a mere crier of sales), or negotiates the purchase or sale or exchange of real estate, or who leases or offers to lease, or who sells or offers to sell leases of whatever character, or rents or offers to rent any real estate or the improvement thereon, for others.

We exchanged a few emails.

Getting all of the homeowners to agree to sell their properties at a set price, for a set period of time, basically pooling it into one deal and then offering it to a developer in exchange for one of the properties or ?

If you ever need renderings for marketing materials, I would love to help out in exchange for learning more about your process-Natasha

Another issue that can work for you or against you is the currency exchange so that needs to be factored in.

I trade Foreign Currency in the early morning and I follow the US dollar pairs. 

The 1031 exchange is the powerful tool that allows you to use deferred tax throughout your investing life to shape the portfolio the way you desire.  

I am looking to invest in smaller multi-families, refinance, and then eventually do a 1031 exchange for larger multi-families.

For those who don't know the French market, it's nothing like the US market and ROIs are much much lowers if any...I also recently aquired a set of 20 garages which offer a better ROI than apartments or houses and splits the risk of unpaid rent in exchange for more management... but I have a retired Dad :)In the past couple months, I have been in contact with a few companies and individuals specializing in investing in the US for foreigners, some looking more dodgy than others but overall seeming to be doing OK...