The cost is the easy part. The timing is where people get hurt, and almost nobody mentions it.
Budget $2,000–3,500 all in for a boat in the 40–50 foot range.
The hull-and-systems survey itself typically runs $850–1,200. The engine survey is a separate line item and a separate person. Add the haul-out, and add travel if you're bringing someone good to a boat that isn't near them.
Hull and systems. Engine. And electrical — which is the one people skip.
An electrical survey wants an ABYC-certified marine electrical contractor with real years behind them. Some hull surveyors are qualified to do it; most aren't. You'll pay their hourly rate plus travel, and it can cost as much as the hull survey or more.
⭐ The cost driver is countable, which means you can estimate it before you call: the number of helm stations and the number of panels. A boat with a flybridge and a lower helm is a bigger electrical job than a single-station boat — which is worth knowing, because a second helm is otherwise a straightforward good thing.
A seller usually wants to close quickly — they want their money out of the boat. That pressure lands on you as a scramble to find a surveyor, and a scramble is how people end up with whoever is available rather than whoever is good.
Win the time in the offer, before you know you need it. By the time you're calling round, the closing date is agreed and the leverage is gone.
It also settles an argument buyers have with each other — whether to line up a surveyor before you make an offer, or wait until you have one accepted. If you've negotiated enough time, you don't have to pre-shop. Both camps are right about the risk they're each worried about, and buying weeks instead of days removes it.
A pre-purchase survey hauls the boat. Bottom paint hauls the boat. If the bottom needs doing anyway, that's one lift, not two — and it puts the survey, the running-gear inspection and the paint on the same day.
It's also the right moment for it, because whatever the haul-out uncovers — shafts, props, transducers, thru-hulls, thrusters — surfaces before you own the boat rather than after.
A clean survey is not a warranty, and the good surveyors say so first. It tells you what is working, what isn't, what meets code, and what condition the boat is in on the day. On a used boat, most things will eventually break regardless.
And a related heuristic worth carrying: a boat that has seen recent, regular use is generally a better bet than one with low hours that has been sitting. Low hours reads as low wear and often means something else.
Loopers who have been through a purchase survey, surveyors, and a marine electrical contractor on the certification and cost points. We haven't surveyed anything ourselves — every figure here comes from people who have paid for one. Where their numbers differed, we gave you the range rather than an average.
If we've got something wrong, tell us and we'll fix it — support@caniloop.net. A correction from someone who has actually run it is worth more than anything we can write.