How much does it cost to start rental arbitrage? A first-unit budget

The most common question from new operators is also the one with the least useful answers online: how much money do you actually need to launch your first unit? You will see figures that are far too low, usually because they leave out the deposit, the permit or the months before bookings arrive.

This post walks through a complete first-unit budget in four buckets, then works through one example with every assumption labelled. Swap in your own numbers and you will know, before you call a single landlord, whether you are ready.

Every first unit needs cash in four places. Miss one and the budget looks better than it is.

1. Move-in costs: what the landlord and utility companies need before you get keys.
2. Furnishing and setup: everything that turns an empty apartment into a bookable listing.
3. Compliance and launch: permits, registrations, tax accounts, photography and guest-facing tech.
4. Operating reserve: cash that covers rent and fixed bills while the listing ramps up, or during a slow season.

The first three are spent. The fourth is insurance against your own optimism, and it is the one beginners cut first.

These are mostly set by the lease, so ask for them in writing before you commit.

• Security deposit. Often one month of rent, sometimes more for a short-term or mid-term use. Some landlords ask for a larger deposit as a condition of consent; treat that as normal, not as an insult.
• First month's rent, and in some cases last month's as well.
• Application and admin fees, including any business or entity screening the property manager requires.
• Utility and internet setup. Connection fees, deposits if you have no history with the provider, and any equipment.
• Insurance. A short-term rental or commercial policy, often paid up front or with a first installment. Get quotes before signing, because some policies exclude certain property types or uses.

Ask whether the deposit is refundable in full at the end of the lease and what the landlord considers normal wear. That deposit is your money, but it is locked up for the length of the lease, so it still belongs in your startup cash.

This is usually the biggest single line and the easiest one to overspend on. Guests pay for comfort, cleanliness and good photos, not for designer pieces.

What you need on day one

• Beds, quality mattresses and mattress protectors for every sleeping space.
• At least two full sets of linens and towels per bed, so cleaners can turn the unit without laundry delays.
• A sofa, dining seating, a work desk or table and adequate lighting in every room.
• A stocked kitchen: cookware, dishes, utensils, coffee maker, basic appliances the unit lacks.
• Window coverings that actually block light in bedrooms.
• Starter consumables: toiletries, paper goods, cleaning supplies and a locked owner's closet to store them.

Where to save and where not to

Save on decor, art and anything guests do not touch. Do not save on mattresses, linens or the sofa, because those drive reviews and wear out fastest. Assembly, delivery and haul-away fees add up, so include them in the line rather than discovering them later.

If you plan to run the unit as a mid-term rental for traveling professionals, your list shifts toward a proper workspace, full laundry and storage, and away from decor aimed at weekend guests. The mid-term rentals guide covers that setup in more detail.

This bucket is small compared with furniture, but it is the one that can shut you down if you skip it.

• Permits and registration. Many cities and counties require a short-term rental permit, registration or business license, and some require inspections. Fees and processes vary widely, so do not copy a figure from another city. Look up the official city or county site, call the permitting office if the page is unclear, and confirm whether the permit is tied to you, the owner or the property.
• Tax accounts. Lodging or occupancy taxes may need to be collected and remitted at the state, county or city level. Find out which ones the booking platforms handle and which you must file yourself.
• HOA approval, where it applies, including any fee for reviewing your request.
• Photography. Professional photos are worth paying for on a first listing.
• Guest tech. Smart lock, noise or occupancy monitor that respects guest privacy, and smoke and carbon monoxide detectors if the unit needs more.
• Software. Pricing, messaging or channel tools, plus any subscription you use to find the unit in the first place.

If you have not yet checked rules for your target market, read what to check before you sign a lease first. A compliance surprise after you have furnished the unit is the most expensive mistake in this budget.

A new listing has no reviews, and the first weeks are often slow while you build a booking history. Your lease does not care. Rent, utilities, insurance and software are due whether or not anyone books.

A simple rule: hold enough cash to cover three months of fixed costs with zero revenue. If your market is strongly seasonal and you are launching into the slow season, hold more. If you do not need it, it stays in your account. If you do need it, it is the difference between a rough quarter and breaking a lease.

Fixed costs here means rent, utilities, internet, insurance and software. Leave out cleaning and platform fees, since those mostly scale with bookings.

Every number below is an assumption for illustration, not a market figure. Replace each one with real quotes from your market.

Assumptions

• Monthly rent: $1,600
• Utilities and internet: $250 a month
• Insurance: $100 a month
• Software and subscriptions: $50 a month
• Fixed costs per month: $2,000

The budget

• Move-in: deposit $1,600, first month $1,600, application fees $100, utility setup $200, first insurance payment $150. Subtotal: $3,650.
• Furnishing and setup: furniture and delivery $6,000, linens and starter supplies $600. Subtotal: $6,600.
• Compliance and launch: permit and registration placeholder $300 (replace with your city's actual fee), photography $250, smart lock and monitoring $350. Subtotal: $900.
• Reserve: three months of fixed costs at $2,000. Subtotal: $6,000.

Total cash needed: $17,150.

What is actually at risk

Not all of that is spent. The deposit is held, and the reserve is only used if bookings fall short. The money you cannot easily get back is furnishing, launch costs, fees and setup: about $7,950 in this example.

Now say conservative underwriting shows the unit netting $700 a month after every cost, including rent. At that rate, the $7,950 takes a little over 11 months to recover. That is your payback period, and it should sit comfortably inside your lease term. If your lease is 12 months and payback is 11, there is almost no room for a bad month. Either negotiate a longer term, cut setup costs or keep looking.

To run your own version, plug your quotes into the rental arbitrage calculator and use trailing twelve-month revenue, not peak-season rates.

1. Counting the reserve as optional. It is the line that keeps you solvent through a slow launch.
2. Furnishing before compliance is confirmed. Get written landlord consent, the HOA answer and the permit path settled before you order a mattress.
3. Ignoring payback against lease length. A unit that earns well but takes longer to pay back than the lease runs is a loss.
4. Underwriting on best-case revenue. Use conservative occupancy and nightly rates. The five numbers in our underwriting guide matter more than the furniture budget.
5. Putting the whole budget on credit. If the first unit underperforms, you are paying interest on furniture you cannot sell for what you paid.

Before you approach a landlord this week, build your own four-bucket budget with real quotes, confirm the local permit cost and process, and check that your payback period fits inside the lease you can realistically get. If the total is more cash than you have, start with a smaller unit or a mid-term setup rather than cutting the reserve.