The Unit Renovation ROI Multifamily Owners Aren't Calculating
- Roxana Brito
- Jun 10
- 4 min read
Most renovation decisions in multifamily get made on instinct.
The unit looks dated. Tenants are churning. The building down the street just got renovated and is leasing faster. So you renovate — or you don't — based on a feeling about whether it's worth it.
What rarely happens is the actual unit renovation ROI multifamily math.
And when you run the actual math on a cosmetic unit renovation in the LA market, the numbers change the conversation entirely — not just for the renovation decision, but for how you present capital expenditures to ownership and how you think about your portfolio's long-term value.
Here is the math.
The Baseline Scenario
Take a 10-unit building in the Los Angeles area. Units are occupied but under-renovated — original or dated flooring, older kitchen finishes, worn fixtures, and paint that has seen better days. The building is performing, but not at its potential.
A targeted cosmetic renovation per unit — new LVP flooring, updated kitchen cabinet faces and hardware, fresh countertops, modern fixtures, and a full repaint — runs roughly $15,000 to $25,000 per unit depending on scope and current condition. For this example, use $20,000 as the midpoint.
Total renovation investment across all 10 units: $200,000.
The Rent Lift
A conservative post-renovation rent increase in the LA market for a well-executed cosmetic renovation is $300 to $400 per month per unit. Use $350 as the conservative figure.
Per unit annually: $350 × 12 = $4,200.
Across all 10 units annually: $42,000 in additional gross income.
Payback period on the $200,000 renovation investment at $42,000 per year: under 5 years — and that is before accounting for the secondary benefits of higher occupancy rates, lower turnover, and improved tenant quality that a renovated building consistently produces.
The Number Most Owners Miss: Asset Value
This is where the math becomes a different conversation entirely.
Property value in commercial real estate is largely driven by net operating income. At a 5 percent cap rate — a reasonable benchmark for stabilized multifamily assets in Los Angeles — every dollar of added annual NOI translates to $20 in asset value.
$42,000 in additional annual income at a 5-cap rate: $840,000 in asset value.
A $200,000 renovation investment that produces $840,000 in asset value appreciation is a 4.2x return — before the renovation has even fully paid back through rent income.
This is what turnkey renovations actually do for a portfolio. They are not a maintenance expense. They are a capital allocation decision with a measurable, calculable return.
Scaling the Unit Renovation ROI Multifamily Math
The same framework applies at any building size. Here is what the numbers look like scaled:
5-unit building:
Renovation investment: $100,000
Added annual income: $21,000
Asset value lift at 5-cap: $420,000
Payback period: under 5 years
20-unit building:
Renovation investment: $400,000
Added annual income: $84,000
Asset value lift at 5-cap: $1,680,000
Payback period: under 5 years
30-unit building:
Renovation investment: $600,000
Added annual income: $126,000
Asset value lift at 5-cap: $2,520,000
Payback period: under 5 years
The payback period stays consistent. The asset value lift scales with the building — and in every scenario, the renovation investment is a fraction of the value it creates.
The Variables That Change the Outcome
These numbers are conservative estimates for the LA market. Several factors affect the outcome in either direction.
Submarket rent ceiling. The $350 rent lift assumption is conservative for many LA submarkets — Silver Lake, Los Feliz, Culver City, and similar areas regularly support $500 or more. In more price-sensitive submarkets, $250 may be the realistic ceiling. Always verify what renovated comparables are actually achieving in your specific market before committing to a scope.
Renovation scope. A targeted cosmetic renovation at $15,000–$25,000 per unit is designed to hit the rent lift at the lowest possible cost. A full gut renovation at $35,000–$50,000 per unit does not proportionally increase the rent lift — the asset value math changes significantly. Scope discipline matters.
Cap rate. A tighter cap rate environment (4 percent or below, common in high-demand LA neighborhoods) makes the asset value math even more favorable. A looser cap rate environment reduces it. Know your market's cap rate before running the calculation.
Occupancy during renovation. Phasing renovations through a building while keeping units occupied requires experienced project management and minimizes income disruption. A poorly managed renovation that drives vacancy erodes the payback period significantly.
When to Run This Math
The right time to run this calculation is before the renovation decision is made — not after. Specifically, it belongs in three conversations:
Before presenting a capital plan to ownership. Ownership groups make renovation approval decisions based on return, not aesthetics. A clear ROI model with conservative assumptions, a defined payback period, and an asset value projection gives ownership a financial basis for a yes rather than a gut feeling.
Before a refinance or sale. If a sale or refinance is within a 3–5 year horizon, a renovation that can be completed and stabilized before that event adds directly to the appraised value at exit. Timing the renovation to the capital event maximizes the return.
Before a competitive lease-up. When comparable buildings in the submarket have renovated and your building has not, the math on holding position versus renovating shifts significantly. Extended vacancy, lower lease rates, and declining tenant quality all have costs that belong in the calculation.
The Decision Is Financial. The Math Should Be Too.
Renovation decisions that get made on instinct tend to produce inconsistent outcomes. Some work out. Some don't. The ones that consistently work out are the ones where someone ran the numbers first — modeled the rent lift conservatively, calculated the payback period, and sized the renovation scope to deliver the best return for that specific asset.
Diamond Pro Apartment Experts works with property managers and ownership groups across Southern California to scope and execute renovations that deliver measurable returns. If you are evaluating a renovation and want to work through the math on your specific property, we are happy to take a look.
Get in touch at info@diamondgcinc.com
Diamond Pro Apartment Experts — Licensed General Contractor | Southern California | WBENC Certified | BBB Accredited
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