Hi Michael-
I manage almost 30 furnished units here in San Francisco Bay Area. 20 of those units we are doing on the "Master Lease" model where we lease, furnish and sublet. The remainder are on what you are calling the "commission split" model where we manage a unit on behalf of an owner and they already have it furnished.
When I started doing this about 4 years ago 100% of my units were "Master Lease" and you are right the start up expenses are not exactly trivial.
For a studio apartment we spend about $4000 - $7000 to furnish all in (Ikea, Target, Overstock.com, Amazon).
1BR $5000 - $8000.
2BR $7000 - $12000.
We haven't furnished anything larger than a 2BR.
As far as financing the start up costs we often just use the profits but in the beginning we used 2 forms of debt and I will mention a 3rd.
- Credit Cards. We used a combo of low-interest credit cards from a local credit union (8.5%) or sometimes just an AMEX if I wanted the points. The high interest rate didn't bother me as the card would be paid off within 90 days.
- Unsecured Credit Line. Again credit unions are a good source here. I think our interest rate was like 11%. These are basically "signature loans" meaning the bank/credit union gives you a line of credit you can use for anything you like.
- HELOC. This is the cheapest source of money I know of. It's a line of credit against a property. Interest rates are variable but typically 3%-5% amortized over 30 years. I never used this to buy furniture but you could easily enough.
So one thing about your "commission split" model that I think is uncommon is that you are "splitting the profits". This is not a common arrangement in my experience. For all of my units that I am not the leaseholder on I charge a percentage of the monthly gross revenue. It ranges from 15% to 20%. So if the unit in question grosses $10,000 (not including cleaning fees charged to guest) I keep $1500 - $2000. Cleaning fees are still charged to the guest/tenant on top of the gross so you can think of this percentage as the "operating margin".
Goes without saying that charging a percentage of the gross is a more robust business model for the manager compared to "splitting profits". The manager makes money every month regardless of the operating expenses and overhead. Do you have competitors in your locale offering a similar business model as yours?
Before AirBnB broke the Short Term Rental market wide open there was already an established industry of property managers operating vacation rentals and furnished corporate apartments. These companies always charged a percentage of the gross and almost all of them still do as far as I know.
My profit margins are higher on the properties I hold the lease on. But it is more stress since I am on the hook for the rent, utils, operating costs each month and I don't always breathe easy until I see enough bookings for that month to put me in the black. Especially true in the slower seasons which for us is Nov - Feb.
Good luck on your road to signing new leases! I do however recommend you get some new clients where you are charging a percentage of the gross. You might find that model less risky and more scalable.
Carlos