Did you advertise the property as having a view as a feature? If not, scaffolding shouldn’t be an issue. Was the property advertised as a good potential work space? If not, their working location is not your issue to resolve. If their regular office had work going on around it, do you think their employer would provide an income boost, which is effectively what they’re asking for? I’d look at it another way. Their search for a new place & the associated move would be ridiculously hassle ridden just because there’s work going on. If they are that shallow, they aren’t stayers anyway. They’ll be off as soon as they see something that their whim takes them to anyway. I’d explain that the works don’t get you a reduction in costs, so passing one on is impractical. If you give in, there will only be something else down the line that will bring up the same request. This type of tenant always makes me say to myself that there will be a pattern of behaviour building, if I allow it to build. I’d rather get rid than give in. It sounds counter intuitive but these behavioural patters do build. I’d hold the position. There is a shortage of housing nationally. I’d bet you’ll rent it out to a new tenant for way more than the 80% your current tenant is proposing.