In my market the average monthly LTR rent on a MLS SFR is less than 0.5% of the purchase price.  

The center has an extra 20 acres of greenfield zoned for additional retail.We know there is pent up leasing demand, but not sure what is current development costs as we haven’t built a thing since before Covid.Anyone can shed a light as to what is the current per square foot average these days?

Home loan borrowing costs eased again for the third straight week as the average rate on a 30 year home loan declined to its lowest level since April. 

That's a decent benchmark for averages, but if you're doing a luxury STR, it's not really going to be close.

As the population continues to grow and more high income earners move here to work at Toyota, Boom, etc. the average purchase price will continue to rise making it even more difficult for first time buyers to break into the market.

Is this market accessible for the average investor in the UK, or is it exclusively banks and hedge funds who buy/sell these sorts of instruments?

For a $300,000 property, this could be $6,000 to $15,000.Mortgage on Rental Property:Loan Amount: $240,000 (assuming 80% financed at 4% interest over 30 years).Monthly Payment: Approximately $1,145.Other Expenses:Property Taxes: Estimated at 1.5% of property value annually ($4,500).Insurance: Estimated at $1,500 annually.Maintenance: Estimated at 1% of property value annually ($3,000).Property Management Fees: Assuming 10% of monthly rental income ($2,400 annually if rent is $2,000 per month).Vacancy and Turnover Costs: Estimated at 5% of annual rental income ($1,200).Total Initial Investment and Annual Operating ExpensesInitial Investment:Total Borrowed from Equity: $150,000Down Payment for Rental Property: $60,000Closing Costs for Rental Property: $10,500 (average)Total Initial Cash Outlay: $70,500 (initial investment from equity) + $10,500 (closing costs)Annual Operating Expenses:Property Taxes: $4,500Insurance: $1,500Maintenance: $3,000Property Management Fees: $2,400Vacancy and Turnover Costs: $1,200Total Operating Expenses: $12,600 annuallyExpected ReturnRental Income:Assuming $2,000 per month, annual rental income = $24,000.Net Operating Income (NOI):Annual Rental Income: $24,000Minus Annual Operating Expenses: $12,600NOI: $11,400Debt Service:Mortgage Payment on Rental Property: $1,145 per month, $13,740 annually.Total Debt Service: $13,740 (rental property) + $8,592 (equity loan) = $22,332 annually.Net Cash Flow:NOI: $11,400Minus Debt Service: $22,332Net Cash Flow: -$10,932 annually (negative cash flow initially due to high debt service).Cash-on-Cash ReturnInitial Cash Investment: $70,500Net Cash Flow (first year): -$10,932Cash-on-Cash Return: Not applicable initially due to negative cash flow.Long-Term Appreciation and AdjustmentsProperty Appreciation:Assuming a 3% annual appreciation, the property value could increase by $9,000 annually.Rent Increases:Assuming a 2% annual rent increase, rental income will rise, improving cash flow over time.

From my research here on BP, the average is 10% plus one month's rent ($800) every time I would have to find a tenant (does this mean he would pay me $3200 to find the initial tenants?)

The average room size is 10 x 12, so you can think of a 2200 square foot house, and if it is a 4 bedroom now, you know there is definitely enough square feet to add a couple of bedrooms, and that's how you can be creative by making a deal when others see that 4 bedroom house as a 4 bedroom, but you just turned it to a 6 bedroom and made a deal out of it.

If we go off of an average of 35% expenses (I use 35% for properties older than 10 years and 25% for properties 10 years and newer), then we sold that duplex at a 4.75% cap rate.