Control point six
A shared house is a smalloperating business. Underwrite it like one.
Revenue per occupied bed, cost per occupied bed, break-even occupancy, margin, reserves and the payment lag that connects them. Run these five numbers before a property is signed and the deal tells you what it is. Skip them and the deal tells you later.
Acquire Group Homes™ provides education and business systems. Every figure on this page is a method, not a projection. Nothing here is a promise of revenue, occupancy, funding or profit.
The frame
The house does not have a profit margin. Each bed does.
Operators who think at the house level make house-level decisions. Operators who think at the bed level can see which bed is carrying the house — and which one is quietly costing it money.
The reason this distinction matters is that costs do not behave uniformly. Some costs are fixed — rent, insurance, the base utility load — and they are the same whether the house holds four residents or six. Others are variable: food, the consumables, the incremental wear. Growth changes the second category and not the first, which is why the fifth and sixth beds are usually the most profitable beds in the house, and why the first bed is almost always the most expensive.
Understanding that shape is what turns a house from a thing that "makes money" into a thing whose behaviour you can predict. It is also what tells you defensively how bad a bad month can get — because the same arithmetic that makes those later beds profitable makes the fixed cost more painful at low occupancy.
The question that tells you whether the house works.
At what occupancy does this house stop losing money?
An operator who can answer that — and can show the arithmetic — knows what they have. One who cannot has a house with a personality, not a business with a model. This single number should be known before the lease is signed, not derived from the bank statements three months later.
The cost stack
Six lines carry almost every house.
List them all, then decide which are fixed and which move with occupancy. Most modelling errors are an omitted line rather than a wrong number.
Property cost
Rent under a lease, or debt service under an ownership structure. The largest single line and the one that determines everything above it.
Utilities and connectivity
Power, water, gas, internet. Scales with occupancy and with season, and is routinely underestimated in a house that runs all day.
House manager and staffing
Whether this is a stipend for a live-in manager or wages for coverage, it is a real cost with real employment obligations attached.
Food, if provided
A line that can be modest or substantial depending on the model, and one that changes the resident agreement when it exists.
Maintenance and turnover
Ongoing repair plus the cost of the days a bed sits empty between residents — including cleaning, painting and the rent you paid regardless.
Administration, insurance and marketing
Insurance, licensing and compliance costs where applicable, bookkeeping, software, and the referral development that keeps the beds filled.
Two lines are routinely missing. The first is the cost of referral development — the relationship work that produces placements is an operating expense, not a marketing afterthought, and it does not stop once the house fills. The second is reserves. A model without a reserve line is a model that has assumed nothing will ever break.
Reading the model
Four numbers, and what each one actually tells you.
These are not four ways of saying the same thing. Each answers a different question, and an operator who tracks only one will be surprised by the others.
Break-even occupancy
The percentage of beds that must be occupied before the house covers its costs. This is the single most useful number an operator can know, and the one most often left uncalculated.
Margin per bed
Revenue per occupied bed minus the variable cost of that bed. Tells you whether growth helps or hurts, and is a different number from house-level margin.
Contribution margin
What each additional occupied bed adds after its own variable costs. The number that tells you whether filling the sixth bed is worth the effort of filling it.
Cash position after lag
What the house actually has in the bank once payment timing is applied. A profitable house with a 60-day lag can still run out of cash.
Profitability and solvency are different questions. A house can be profitable on paper and still run out of cash.
Where models break
Six assumptions that make a house look better than it is.
Each of these is common, each feels reasonable in isolation, and each one moves the answer in the same direction — optimistic.
Underwriting at full occupancy
A house modelled at 100% occupancy is modelled at an occupancy it will not sustain. The vacancy cost is real and belongs in the model.
Ignoring the payment lag
Revenue that arrives six weeks after the resident does has to be funded in the meantime. Working capital is a cost.
Treating a live-in manager's stipend as free
Reduced rent in exchange for coverage is a cost expressed as foregone revenue. It still has to be valued.
Leaving reserves out
A furnace, a roof, a vacancy and a slow payor can arrive in the same quarter. A reserve line is not optional.
Comparing houses on rent alone
A cheaper house that needs more work per resident can cost more than a higher-rent house that does not. Compare on cost per occupied bed.
Forgetting the cost of an empty bed
An empty bed is not zero. It is the share of fixed cost that bed was carrying, now carried by the others.
The economics briefing
The cost stack, the four reads, and the assumptions that break.
A written briefing on underwriting a shared housing house — built to be run before a property is signed, and re-run whenever an assumption changes.
- The six cost lines and how to separate fixed from variable
- How to calculate break-even occupancy with the arithmetic shown
- Revenue per bed, cost per bed and contribution margin
- Sizing working capital around a payment lag
- The reserve line, and how to size it from the model
- A one-page underwriting sheet you can run on a candidate property
Questions
What people ask about house economics.
What is a good margin for a shared housing house?+
How do I calculate break-even occupancy?+
Does a higher-rent house ever make more sense?+
How many months of reserve should I hold?+
Why is this framed as a real-estate page?+
Related
Where this goes next.
The Group Home Business
The revenue paths and cost lines assembled into one operating picture.
OpenRevenuePayor Intelligence
Who pays, when, and what that timing does to your working capital.
OpenToolDeal Control Calculator™
Put the cost stack and occupancy assumptions into a live model.
OpenToolGroup Home Profit Calculator
A faster read on revenue, costs and net operating income.
OpenToolPerfect Property Score™
Score a candidate property against the economics it has to support.
OpenReal estateControl the Home
How the property cost gets set — and how operators restructure it.
OpenBusiness
The Group Home Business
How the economics fit inside a business with three revenue paths.
OpenRevenue
Payor Intelligence
Rate, timing and reliability — the three inputs to the revenue line.
OpenTool
Profit Calculator™
Model a house's revenue, cost and break-even in a few minutes.
OpenImportant disclaimer
Acquire Group Homes™ provides education, consulting, business systems and real-estate strategy. It does not provide legal advice, medical advice, clinical treatment, licensing determinations, tax advice or Medicaid eligibility determinations. Requirements vary by property, population, services, city, county and state — nothing on this page states or implies that any model is automatically legal in any jurisdiction.
Operators must verify zoning, licensing, occupancy, building/fire code, fair-housing obligations, insurance, resident-rights requirements and other applicable laws with qualified professionals before acquiring or operating a property. We do not promise "no license required," guaranteed Medicaid payment, guaranteed government contracts, guaranteed occupancy, "eviction-proof" agreements, or that any structure avoids zoning or lender requirements.
Full disclaimers