Likely the OP is long gone but there is a flip side to ownership costs in many areas. To name a few:
What type of vessel is in question
Is your vessel close or afar to you
Do you want a near pristine vessel
Do you want your bright work appealing
Do you want gel coat gleaming
Are you planning on adding thrusters
Is your fly bridge enclosure scruffy
Have the genset and engines received “book” care
Do your teak decks or windows leak
Do you pursue the latest in instruments
Is your vessel stabilized
Do you enjoy the ambience of an “A” Marina
Do you cruise afar or stay put
Are your systems designed for redundancy
Are your bilges dry
Are you keen on LFP batteries
Are you leaving your vessel in hurricane waters
Do you care about resale value
Is your vessel a dock queen with degrading systems
Do you ascribe to a yachting looking or utilitarian vessel
All of the above and more determine one’s annual costs.
Agree with Sunchaser that answering these questions will give you a good indication of what it is going to cost on a yearly basis, but the overall condition of the boat itself gives you a pretty good picture of what it is going to cost you to buy the boat and to get it to the level you want it to be in.
We were able to buy our boat well below market value, but I knew some major projects needed to be done to get the boat to our requirements.
After we bought our boat we have spent double that amount in repairs and upgrades and some of those were not planned at all. Do they fall into maintenance ? Perhaps if you would do that piece by piece, small bits at the time.
First I spent about 3000 on an overhaul of the cylinder heads, cleaning of the pistons, cylinders, coolers etc. Engines ran fine until some moron in the marina decided to run them with the sea cocks closed. After that the marina stuck up their middle finger, claiming it was not them.
The total damage was 35.000 and a complete lost sailing season.
We had to shell out 8000 for a completely unexpected battery change.............twice !
Our marina has this highly modern pre-paid system for electricity and water. Only problem is that, when the pre paid is finished and the marina does not add new electricity to the pole............your batteries are going to be toast. Happened twice. First time was a caretaker who switched a bilge pump to manual and just let it run. Second time was the electricity pole running out of credit and nobody adding new credit (which was already paid for by me).
So that was 43.000 which were not planned at all, plus the 3000 for the initial overhaul. Add the 13.000 for marina fees during that whole period and we are at 61.000 already.
Then we spent of course quite a bit of money on new carpets, mattresses, furniture etc guess the total was about 5000
We knew we would have to change our electrical system. It was mostly generator based and instead, I wanted to use as much solar as possible. For that I needed to change to an all Victron boat, with lots of solar panels, change the boat to 24 V and while we were doing that we found a lot of worn out cables, so decided to use the winter months for a complete rewire. In all that has cost me close to 40.000 by now.
Then we have 2 projects coiming up and one is finishing the electrical system by installing a large Lithium bank which will be done next month for the nice sum of 15.000 and the second project is stabilizers for the total sum of 70.000.
The total bill of all the upgrades, plus the marina fees, damages etc comes to roughly 190.000 and that is quite a bit of money. Did the boat increase that much in value ? Not exactly.
I could of course have searched for a different boat in the final price range, but am pretty sure that also there we would have needed to make changes. We like our Defever 49, she fits what we want out of it and it was a good platform to realize all the changes. She is old (1979), not appealing to everyone in Europe, but to us she is perfect and that made it worth to make the investment.
Now that we made all the changes and shelled out the money for those, only now I can start thinking about annual cost and because of all those changes those cost have become relatively low.
Due to the large solar array and lithium bank we won't spend much time in a marina. Marina fees are 140 (and up) per night here in most marinas from 1st April until 1st November, so that would have been about 4200 per month if you would go from marina to marina. We just go from anchorage to anchorage and because of the large solar array and lithium bank we don't need to run the generator at all. We will just run it for the sake of turning over the engine, but not for anything else. Saves us about 2000 per month.
Fuel we can get tax free, will cost us about 1.80 per gallon and we carry about 850 gallons. With that we have a range of around 2000 nm, which is enough to bring us to the next place for tax free fuel. So our running cost for fuel are minimal. We may need to refuel once per season, that will be it.
Insurance (220 per month) is a given, you can't get around it and the sailing tax is also a given, cannot get around that either (120 per month)
Due to the fact that we have now replaced our engines, our wiring has been replaced and we will have new Lithium batteries, the majority of the large maintenance projects has been taken care of. All the other stuff, such as painting, woodwork etc we do ourselves, so only cost for material.
But, in order to get to this point we basically paid the boat three times and that is something to take into consideration when you buy a boat. That is why the list of Sunchaser is absolutely correct.
Does the boat tick all the boxes and if not..........how much will it cost to get it there ?
Does it have stabilization and if not...........do you think you want to have the added comfort and since it will cost you a minium of 70.000 - 75.000 it is something to really think about. If you find a boat with stabilization you may want to check if that also functions while on anchor, because if it doesn't and you want to spend a lot of time on anchor.......you should plan for additional cost.
Another thing to think about is 'how often will you use the boat' ? We basically live on our boat 7 to 8 months per year, it is our home, but if you only use the boat during the weekends in the summer months your list of requirements will be shorter.
Based on what happened to us I would make sure to have the money to change the engines if that were to become necessary. Would be really a pity if you buy the boat at the limit of your budget, have no spare cash left and then something like what happened to us happens to you. Then your boat would be sitting in the marina, never to move again. You don't want that to happen.
And whatever you buy, make sure the boat is safe. During our re-wire we found a lot of fire and safety issues, which were hidden in hard to reach places. Some were accidents waiting to happen, luckily they did not happen, but perhaps you should plan ahead and think: 'if I am going to buy a 30 or 40 year old boat, perhaps it is a good idea to just change the major wires, the heavy electricity cables.' It will cost a lot of money, but you don't want to find yourself out at sea when the sparks start flying.
Good luck with your search.