Tools

Lease tools that do the math

Work out the real monthly cost of a space, see when to start on your renewal, and get a rough steer on whether to renew or move.

Calculators and checklists

Lease cost, countdown and renew or move

Lease cost calculator

Space
sf
From the listing, I know the
%
Rent
$/sf/yr
$/sf/yr

Taxes, insurance, operating costs

Term and incentives
years
months
$/sf

Your real monthly cost

/ month
Base Additional GST
Rentable area
Common area you pay for
Annual cost
Total over the term
Cost per usable sf
Net effective rent

Estimates only. Monthly cost is base plus additional rent on the rentable area. The term total takes off free base rent (capped at the term) and assumes additional rent stays flat.

Net effective rent = (base rent over the term, less free rent and TI) ÷ (rentable area × years), not discounted.

Check a real space with me

How to use the calculator

Start with the usable area and either the load factor or the rentable area from the listing. Add base rent and the landlord’s estimate of additional rent, both per square foot per year. Then add the term and any incentives from the proposal.

Comparing two spaces

Run each one and compare monthly cost and total over the term, not the advertised rate. For offers with different incentives, compare net effective rent. The guides explain load factor, net effective rent and triple net leases in more detail.

About the countdown

It uses the rule of thumb I use myself: start 12 to 18 months before your lease ends, and expect a renewal notice deadline somewhere around 6 to 12 months before the end. Your lease has the real dates, so use it as a rough guide.

The date stays on your device, and the calendar reminders are a file you download, nothing more.

Go deeper

If you’re looking for more details

How to use the tools
  • Lease cost calculator: enter the area, base rent and additional rent to get a monthly and yearly cost.
  • Lease expiry countdown: enter your expiry date to see when to start.
  • Renew or move: answer a few questions for a rough steer.

They’re for planning only. Bring the numbers to a call and I can check them against the market.

Next step

Send me a real space and I can run the numbers.

Send me the listing or the proposal. I can check the measurements, the additional rent and the terms.