It is not your credit score but generally better credit will result in a better score- Time at your job- Education level- time at current residenceGood Luck & feel free to PM me if you have any questions. 

@Kenneth Jenkins you forgot to mention owners that expect a PMC to use contractors off Craigslist that are unlicensed, NOT insured and rarely have acceptable experience/skill - but, they quote the "best" price.These same owners will sue a PMC if using these types of contractors results in a tenant lawsuit.

Key Details of the 45L Tax Credit:The credit offers up to $2,000 per eligible unit for builders and developers of residential homes that meet specific energy efficiency criteria.To qualify, the units need to meet or exceed certain energy performance levels in comparison to the national model energy code (e.g., the 2006 or 2009 IECC — International Energy Conservation Code).Cost Considerations for a 90-unit or 112-unit Project:The actual cost of qualifying for the 45L tax credit depends on various factors, including:Energy Efficiency Compliance: The primary cost will come from ensuring that each unit meets the required energy efficiency standards, which typically involve energy modeling, certification from third-party energy raters, and potentially upgrading insulation, HVAC systems, windows, and other components of the building to meet the necessary performance levels.Energy Modeling: Typically, you'll need to pay for an energy consultant or engineer to model the building's energy performance and ensure it qualifies for the credit.

We hope that you can remedy the situation so that we can move into a habitable home.Suggestions that we have to fix the issues:Hire a company to rip up the carpets, treat the subfloors, and replace the carpets, at least on the main level and on the stairs.Provide an air purifier as a start to remedying the smell.Replace the garbage disposal.Hire a plumber to fix the draining issue in the bathroom sink of the smaller bedroom.Fix the tiles in the upstairs bathroom so they no longer present a safety hazard.Replace or fix the screen doors.Fix the gap between the windows and the walls in the living room.Hire a professional company to treat the entire home for pests.

And all those skills you going to have to learn and master in UK to get a property under control, operate it, market it, monetize, operate etc., ALL 100% translates to anything and everything you will do when back in US. 

I’d like to add a few things from my experience as a realtor that could help take things to the next level.

You'll likely need a higher down payment if you can find anyone willing to finance something like this as a first time investor; many require some level of rehab experience at the very least.

The loan is with you, not with your tenant, so none of that means anything to them - in fact because you live in one unit and it's under 4, if you were self-managing you don't even have to abide by fair housing laws (at least on the federal level). 

If your rental rate is below the market anyway, a Tenant might consider this to be win as they would get the lower rate in the beginning and just rise to the level they were looking at everywhere else.Step clauses can be written right into the lease, or created by using 3 month lease terms with an auto-renewal at the step up rental rate price. 

I could pull it up and redo but it's not level to start with and I have good height down there.