How Renovation Delays Erode a Value-Add Pro Forma Month by Month
“It is only a few extra weeks per unit.”
That sentence tends to show up in the quarterly update, after the renovation pace has slipped and before anyone has rerun the model. It sounds like a rounding error. In a value-add business plan, it is closer to a structural change, because turn time is one of the few assumptions that touches rent, occupancy, pace, and valuation at the same time.
A renovation budget gets debated line by line. The number of days a unit sits offline rarely gets debated at all. Often it is not even visible as an input. It hides inside a tidy monthly assumption: seven units renovated per month, every month, until the program is complete. Behind that assumption sits a turn time someone chose. If that choice is wrong, every downstream number inherits the error.
One unit, twenty-four days
Start with a single unit, using round, hypothetical figures for illustration. In-place rent is $1,100. The renovated rent is presented at $1,300, a $200 premium. The model assumes the unit is down for 21 days from move-out to rent-ready. In practice, it takes 45.
The 24 extra days cost roughly $1,040 in rent the renovated unit was supposed to be collecting ($1,300 a month, prorated over 24 days). On one unit, that is noise. However, a renovation program is never one unit.
The delay has to land somewhere
Now scale it. Assume a 120-unit property with a plan to renovate 84 units over 12 months. To protect occupancy and debt service coverage, the sponsor holds about five units offline at any one time. At a 21-day turn, five offline units produce roughly seven completed units a month, which is exactly what the model needs.
At 45 days, the same five slots produce about three and a third units a month. The sponsor now faces a choice, and both options cost money.
The first option is to hold vacancy constant and accept a slower pace. The program modeled to finish in 12 months now takes about 25. By month 12, roughly 40 units are renovated instead of 84. The premium run rate at that point is about $8,000 a month instead of $16,800, an annualized gap of more than $100,000 in net operating income. Across year one, the premium actually collected falls to about half of what was modeled.
The second option is to hold the pace and absorb deeper vacancy. Delivering seven units a month at 45 days requires ten or eleven units offline at all times, roughly double the plan. That keeps the schedule. It also costs about $1,040 per unit across 84 units, close to $90,000 of rent that never arrives. That loss lands in the months when renovation spending peaks and reserves are thinnest. Physical occupancy also runs below what was presented, and occupancy is one of the first figures a lender watches.
Neither path is a catastrophe on its own. Each one moves the same problem to a different line: the 24 days land either in the calendar or in the vacancy.
Where the delay compounds
The real damage shows up when the business plan gets measured. A refinance lender or a buyer will underwrite trailing income, often the last three or twelve months. A slower ramp means less premium inside that window.
At a 6 percent cap rate, a $100,000 shortfall in annual net operating income equals roughly $1.7 million of value the refinance cannot see. At 65 percent loan to value, that is more than $1 million of refinance proceeds that do not materialize.
That is the hidden cost if the turn assumption is wrong. A few weeks of lost rent per unit become a smaller refinance, a longer hold, a later return of capital, and in some cases a bridge loan maturity that arrives before the income does.
What to ask before you trust the turn schedule
Ask whether turn time is an explicit input in the model or buried inside a monthly unit count. If no one can tell you how many days the model assumes, no one has stress-tested it.
Ask when the clock starts and stops. Move-out to rent-ready is one number. Move-out to a signed lease at the premium rent is another, and the gap between them often includes a leasing period the model never priced. A unit that is rent-ready on day 21 and leased on day 50 is a 50-day turn for underwriting purposes.
Ask to see the pro forma rerun at one and a half times and two times the assumed turn days. If the deal only works at 21, you have learned how much room for error the plan really carries.
And ask which path the sponsor would take if turns run long: slow the pace, or deepen the vacancy. Then check whether the reserves were sized for that answer. A plan that intends to hold the pace with a reserve built for a 21-day turn has made a promise the balance sheet cannot keep.
Closing thoughts
Renovation risk tends to get underwritten as a budget question. The number of days a unit sits dark is a return question, and it touches every line between the rent roll and the refinance.
Twenty-four days per unit does not look like much on an investor call. Multiplied across a program and carried into the trailing income a lender will measure, it can decide whether a business plan gets executed on schedule or simply extended.
The next time a sponsor presents a renovation pace, ask what turn time sits underneath it. Then ask what happens to the return if that number doubles.
Vessi Kapoulian
Breaking down multifamily underwriting one step at a time to create educated and empowered investors
P.S. If you would like a second set of eyes on a deal or want to sharpen your underwriting through a risk lens, feel free to connect with me.
P.P.S. And if you want to go deeper into analyzing multifamily investments step by step, my Mastering Multifamily Underwriting book and the Mastering Multifamily Underwriting program walk through this process in plain English, from acquisition to exit.