Anyone have information or experience of BTL in Brussels?
The place is buzzing with activity and I think this will only increase as Europe expands.
Are property related laws similar to France?
What kind of yields can be expected?

Tbh you're too late. In 1999 you could pick up a 3 storey maison d'maitre for 60k, now you're talking 200k (euro) for an apartment. You've missed that boat.

Edit: If you were to buy, once you've agreed to a sale you can't back out else you'll have to stump up a 10% "fine". Purchase duties range from 6-15% on the property, however you can claim back the interest on your mortgage if you pay Belgian or Dutch taxes and it's your primary residence, although if you're btl I'll assume it won't be.

presume you've already checked out brusselsbuytolet.com - legals seem v high - and as I suspected this market is probably long saturated - more than most - Germany seems to be the new Eldorado or Japan