You need spare fluid cash or access to it at a drop of a hat. At least 5k ideally. The biggest pita is the tax return. Also tennants who don't pay rent and then trash the house will more than wipe out a years profit. Unless you own outright you won't make much on the rent. Our profit will be equity. Capital gains tax is a pita that I can't even figure out, but when the time comes, except to pay 40% of the house price rise in tax.
I don't, haven't and won't increase my rent in line with market rate and its mortgaged so I'm planning on selling when we come off our fix. Landlords are increasing rents by 50%. Do you the stomach for that? I don't. So my house becomes unmanagable but i was brave id wait to see what happens in a few years. To make sure your never in this situation you need to keep a close eye on market rental prices, stay in line with its growth but ideally be say a few hundred under it. Everyone of my tennants has negotiated lower rent with me. I negotiated lower management fees. Just getting your annual boiler checks when you manage yourself is a pita.
Another massive issue is guilt. I wanted to sell up for about ten years but for that I need to evict. I pray quite often my Tennant decide to leave of their free will.
If you want the highest rent you really do need a top spec house and expect lots of calls as things break a lot. My tennants are lovely but I have had really bed experiences. Like a Tennant trying to kill his partner in front of her kids and armed police response bad.
It has got me on the property ladder as I'm a Tennant too for work in a prohibitively expensive village. So yes I'd it again. But I'm 20 years in. I have made a very big Capital gain. I have all that capital growth.
If my tennants left I'd sell no question. I think over covid it felt like a gov seized asset and I didn't feel comfortable with not being able to sell up if we in turn became homeless ( not sure how accurate that was, it just felt like it was). The protection isn't on your side. So you have to be open to risk, up to taking a year to evict non paying tennants who trash the fabric of the house. I just feel things will change again and the possibility of needing to sell might be lost. That's the risk I draw my line at. But I think I'm catastrophising. Labour want to change a lot right or wrongly but it's not what I signed up to 20 years ago. Talk of right to buy under Corbin I think?
Lots more things to think about. There are new checks introduced every year it seems which needs a spreadsheet to manage. Also I need to totally refit the bathroom. Tennants just want it bodged up. Understandable I guess. But long tennants and things start to wear that are harder to access.