Free tools
Calculators for leasing brokers
The arithmetic Frontage runs on a deal, on its own. No account, and nothing you enter leaves your browser.
Net effective rent
Reduce an offer to one comparable number: free rent, allowances, rent steps, fixturing, additional rent and the landlord’s side, straight-line with every step shown, and a present value if you want one.
TMI estimator
Pick the market and the kind of space and see what taxes, maintenance and insurance add per month and over the term, against the latest published figure for 24 office and industrial markets. Enter a quote to see how far it sits from the market.
Lease expiry check
Paste the lease list you keep and get the calls to make over the next twelve months: 18, 12, 9, 6 and 3 months before each expiry, estimates kept and marked, nothing uploaded.
Why these exist
Both calculators are arithmetic Frontage already runs inside a deal, pulled out so you can use them without an account. The net effective rent calculator settles which of two offers is actually better once free rent, allowances and rent steps are taken out of the headline. The lease expiry check turns the tenancy list you already keep into the calls worth making this year, at the milestones leasing brokers work to: 18, 12, 9, 6 and 3 months before expiry.
Nothing you paste is uploaded
Both tools run entirely in your browser. What you enter is never sent to us, stored or logged, so a live client list is safe to paste. There is no sign-up, no export limit and no watermark on what you copy out.