I have quite a bit of experience helping homeowners through this process. I know it may seem like semantics, but from reading your description, in my experience it doesn't appear that you and the homeowner have followed the normal process that most HOAs use for project approval. That process involves the homeowner submitting what is called an architectural application. The blank form is usually on the HOA website or the homeowner can request it through the HOA management company. My experience is that pretty much all requests have to go through this process to get an official approval.
In order to have the owner submit this application (assuming you work with them to fill it out), you will need to outline the whole job so the HOA board members can understand what you're trying to ask for. Photos, drawings, descriptions, the whole works. And, it goes without saying, you must be ready to move forward with your proposal if approved (so you need to put forth the exact charging solution that you want to pursue).
That means working with an electrician in advance and getting it scoped out, working with the utility if you need a new electric service for the charger (more on that later), getting pricing to make sure that you want to move forward if approved, etc. You'll need to document the work that you want the electrician to do in the application and be confident that you'll move forward if approved. Just as an aside, you'll need to get a permit for this work with the City or whoever the Authority Having Jurisdiction is for your area. No HOA that I've dealt with will let an electrician come in and do work without a permit. I've seen applications stall because the homeowner or tenant isn't sure which direction they really want to go in and the application is vague as to what the work will be or the ultimate charging solution will be. Usually the blank application form will have some notes about the materials the board will need for approval. I wouldn't count on being able to use the "house" power and proposing some sort of reimbursement schedule. I've never seen an HOA approve that, they want the EV driver to have the charger connected to their existing meter or install a second meter for the EV charging so that the HOA is not on the hook for any energy usage.
Steps I would recommend:
* Make sure the homeowner is on board and willing to file the application on your behalf
* Make sure that you're willing to move forward with the solution as proposed (it may be expensive)
* Get a contractor or two to come out and look over your situation to give you a quotation.
* Assuming you want a Level 2 charging solution, they'll either propose connecting to your meter in the nearby electric room/closet (if it's close enough) or install a new meter (electric service) in the electric room (assuming that there is a spare meter socket that you can use)
* From that power source, they'll need to run conduit and wire out to your parking space where the charger will be installed. If that distance from the electric room to the car is a long distance, that could kill the deal due to cost. Is there a closer option, perhaps a second electric room in the parking area where you can connect to? In rare cases, I've seen a couple of EV drivers make deals with people that park near or next to the electric room to swap parking spaces to make the install closer and cheaper/easier. If the units are owned, though, the parking spaces may be deeded and swapping spaces can be more difficult (and will have to be recorded by the County). If it's a rental situation, sometimes it's easier to swap spaces.
* The electrician will scope out the existing situation and tell you what size circuit the existing infrastructure will support. If you can get a 40 amp circuit that will charge at 32 amps, great. But if you can only get a 20 amp circuit that can charge at 16 amps, that may have to do (because upgrades to the infrastructure can be very expensive).
* The utility only needs to get involved if you need a new electric service (new meter). The utility will probably want to know what the existing building load is before they agree to add a new service for EV charging. Your electrician should be able to clamp on to the building electric service for a week or two and measure the peak load to see if the building is highly loaded relative to the existing electric service. Hopefully there will be enough spare capacity for a new charging circuit.
* If you can get to the cable that feeds your living unit and it is decently close, that is usually the cheapest way to install a charging solution
* Look at the DCC9 energy management product if it might help (it may allow you to install a new circuit on your existing electric service even if it is "Full")
* Once all that is done and you have a potential solution in mind, then you can fill out the architectural application with the appropriate sketches, photos, etc. to show the HOA board what you're asking for. In my experience, the more thorough your application, the more likely they will approve it.
* You'll need to use safety-certified equipment that has been tested and certified by a Nationally Recognized Testing Lab (NRTL). UL is one of these labs.
* The HOA board may have questions or they may approve it with conditions, but I've had pretty good luck getting approvals by putting together a good technical solution with a lot of detail that they can understand.
I hope this is helpful...Is the property owner on board with filing an application on your behalf?
