NOI (Net Operating Income)
Definition
NOI is a property's income after operating costs but before debt service and tax — the number real-estate investors capitalise to value an asset. In coliving, operational improvements flow directly into NOI, which is why running buildings well is a valuation strategy rather than a cost centre.
The formula
NOI = Effective gross income − Operating expenses
- Effective gross income
- collected room and ancillary revenue after vacancy and bad debt, not the rent card
- Operating expenses
- everything needed to run the building: utilities, cleaning, staff, repairs, insurance, management fee, marketing, compliance
- Excluded
- debt service, capital expenditure, depreciation and income tax — these sit below the NOI line by definition
Worked example
Our worked example: 20 beds at £900, stabilised 92%, plus £4,000 a year of ancillary income from laundry and parking.
- 01Gross potential income = 20 × £900 × 12 = £216,000.
- 02Effective gross income = £216,000 × 92% + £4,000 = £202,720.
- 03Operating expenses: utilities £26,000, cleaning £14,000, staff £32,000, repairs £9,000, insurance £3,500, marketing £6,000, compliance £2,500, management fee £20,272 = £113,272.
- 04NOI = £202,720 − £113,272 = £89,448.
An operating margin of 44% on effective gross income. Note what is not in the calculation: no mortgage, no furniture replacement, no refurbishment. Those are real costs and they are paid out of the £89,448, which is why NOI is a valuation input rather than a measure of what lands in your account.
Benchmark
4.25% prime London · 5.00% prime regional
The published prime co-living net initial yields NOI gets divided by to produce a valuation, November 2025. A £89,448 NOI at a 5.00% yield implies roughly £1.79m of value — which is why an argument about whether a cost sits above or below the NOI line is an argument about hundreds of thousands of pounds.
NOI matters more in coliving than in single-let residential for one structural reason: coliving is an operating business wearing a real-estate wrapper, and the gap between gross rent and NOI is far wider. A single-let house might run 20-25% of gross in costs. A coliving building running all-inclusive rents pays the utility bills, cleans the shared space and staffs the community, and lands somewhere very different. Two buildings with identical rent rolls can produce materially different NOI, and the difference is the operator.
Because NOI is the input a valuation is capitalised from, every definitional choice is a valuation choice. Whether the management fee sits above the line, whether a furniture reserve is included, whether marketing is an operating cost or a growth investment — each of these moves the number, and each has a defensible argument. Our position is that anything the building needs every year to keep earning today's rent belongs above the line, and anything that improves the building belongs below it.
When you present NOI to anyone with money at stake, present it with the expense schedule underneath. A single NOI figure invites the reader to assume the worst about what was excluded, and a serious reader will discount it accordingly. An itemised NOI is taken at face value, which is worth more than whatever the omission bought you.
The common mistake
Treating furniture replacement as capital expenditure
In a conventional residential asset, furniture is not a recurring cost and sits below the NOI line. In coliving it is consumed on a schedule — shared kitchens, high turnover, furnished rooms as the product — and a building that never replaces a mattress is a building losing rate. Excluding a furniture reserve from operating expenses inflates NOI, and because NOI is capitalised, it inflates the valuation by roughly twenty times the annual amount you left out.
Frequently asked
Does NOI include the management fee?+
In our schedules, yes. The building cannot run without management, so the fee is an operating cost. Be aware that owner-operators sometimes exclude it to present a higher NOI, on the reasoning that an owner performing the work in-house pays no fee. That is an argument for disclosure, not exclusion — state the treatment either way, because the reader cannot infer it.
What is a good NOI margin for coliving?+
The margin varies too much with operating model to publish a target. A management-agreement building carries staff and utilities but no head rent; a lease-arbitrage building carries a head rent that swamps everything else. Compare a building to its own prior year and to its underwriting, not to a sector average that mixes the two structures.
How is NOI different from cash flow?+
NOI stops before debt service and capital expenditure; cash flow does not. A building with healthy NOI and heavy leverage can produce nothing for its owner. Lenders read the gap between them as the debt service coverage ratio, which is the number that decides whether the loan is serviceable.
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