UK HMO calculator

Analyse an HMO or room-rental property using room-level income, occupancy assumptions, finance and operating costs. DealStack helps separate gross room income from the cash flow that remains after realistic allowances.

Analyse a property free

Room-by-room monthly income

Use DealStack's detailed underwriting inputs and calculation breakdowns to see how this part of the deal affects the overall result.

Occupancy-adjusted effective rent

Use DealStack's detailed underwriting inputs and calculation breakdowns to see how this part of the deal affects the overall result.

Operating and compliance costs

Use DealStack's detailed underwriting inputs and calculation breakdowns to see how this part of the deal affects the overall result.

Cash flow, yield and criteria testing

Use DealStack's detailed underwriting inputs and calculation breakdowns to see how this part of the deal affects the overall result.

Why use DealStack?

Many property calculators stop at gross yield. DealStack is designed for deeper underwriting: purchase costs, finance, operating expenses, stress scenarios, professional constraints, saved deals and exportable reports. You can start with manual inputs and move into paid reporting or live property-data lookup only when you need it.

How it works

Choose a property you are already considering.
Enter or retrieve the purchase, income, cost and finance assumptions.
Review the calculated outcomes and open any result card to see the underlying calculation.
Stress-test the deal and compare it with your investment criteria.
Save the analysis or export a professional report when required.

Frequently asked questions

Can I enter individual room rents?

Yes. DealStack supports room-by-room income so an HMO can be modelled from its actual letting structure.

How is vacancy handled?

You can model occupancy and void assumptions rather than assuming every room is occupied all year.

Does it assess licensing requirements?

The calculator can hold risk and due-diligence context, but you should verify local licensing and planning requirements independently.