Flip Holding Costs: How to Budget the Months Between Buy and Sell

Every month you own a flip costs money, whether a crew is on site or not. These are your holding costs, also called carrying costs. They start the day you close and stop the day the sale funds. Most new flippers budget the rehab carefully and guess at this part. That's where margins disappear.

What goes on the list

• Loan interest. Usually the biggest line. Most flip loans are interest only.
• Property taxes. Prorated at purchase, then accruing monthly.
• Insurance. Typically a vacant or builder's risk policy, which often costs more than a standard policy.
• Utilities. Power, water and gas, needed by your crews and for showings.
• HOA dues, if any.
• Upkeep and security. Lawn care, lockboxes, cameras, winterizing.

On a draw-based loan, ask whether interest is charged on the full loan from day one or only on funds actually drawn. It can change your interest cost noticeably in the early months.

Build a monthly number, then multiply

Add the monthly cost of each item. Multiply by the number of months from closing to sale funding. Then add a buffer, usually one to two extra months.

Example, round numbers only:

• Interest on a $240,000 loan at 10%: $2,000 a month
• Taxes: $300
• Insurance: $200
• Utilities and upkeep: $250
• Monthly total: $2,750

Planned timeline: 4 months of rehab, 1 month on market, 1 month to close. That's 6 months, or $16,500. With a 2-month buffer, budget $22,000.

Notice what a two-month slip does: $5,500 straight off your profit, before any other overruns.

Why time is the real risk

Holding costs grow with the calendar. The usual causes of delay are permit and inspection backlogs, contractor no-shows, surprise repairs found behind walls, and slow buyer demand. You can't control all of these, but you can plan for them.

Ways to shorten the hold:

• Get plans and permits moving before or right at closing
• Use a contractor with a track record of hitting dates
• Order long-lead items, like windows and cabinets, early
• Price to the comps so the house sells in the first few weeks
• Line up your listing agent and photos before the last coat of paint

Put it in the profit math

Your true profit is the sale price minus purchase, rehab, closing costs on both ends, loan points and fees, selling costs, and holding costs for the full period. Leave holding costs out and the deal looks better on paper than it is.

What this means for you

Treat time as a cost line. Build a monthly carry number, multiply by a realistic schedule, and add a buffer. If the deal only works on the best-case timeline, it's too thin.

RSC Fix & Flip loans are interest-only on a 12-month term, and a full interest reserve can be built into the loan. A reserve pays the monthly interest from loan proceeds, but that interest is still a cost, so keep it in your holding budget.

Want to see how loan structure changes your carry costs? Send RSC Private Lending your scenario for a term sheet in 24 hours. Subject to underwriting.