A commercial office building exterior. Editorial setting only. No company signage.

lease comparison

How do you compare a gross lease and a net lease?

How do you compare a gross lease and a net lease?

Add tenant-paid extras to the net path until both offers show the same occupancy stack. Then compare.

This page belongs to a validation / pilot concept. It is not generally available.

Questions this page also answers

Why is the net rent lower?

Because extras were left off the sticker. They still arrive as bills.

What do you add to a net lease?

CAM, tax, and insurance, plus any other tenant-paid extra.

Can a gross lease still lose?

Yes, if its rent is high and the net extras are truly small.

Does NPV change the rule?

NPV still needs the same extras on the timeline first.

Plain-language definition

A gross lease folds many extras into the rent number.

A net lease quotes a lower rent and then bills extras.

CAM means common area maintenance. Tax and insurance often join it.

Until you add those extras, the low net sticker is not a fact.

This page sits under Lease comparison.

The extra stack is occupancy cost by another name.

Normalize before you negotiate.

The same extras belong in NPV costs.

The workflow exists to stop sticker math.

Investopedia defines net present value as later cash brought back to today. That idea is the spine of this page. See Investopedia on NPV.

Editorial commercial interior used as section context. Not a customer photo.

Why it matters

This is the most common false save.

Teams celebrate an $18 net and ignore $12 of extras.

A $30 gross can be the cheaper stay.

How it works

Write the cash list first. Then decide what the page is measuring.

  • Label each offer as gross, modified, or net.
  • Ask for the extra stack in writing.
  • Add extras to the net path.
  • Only then rank with NPV or effective rent.
Later cash boxes sit farther right and look smaller than year-one cash.
Later cash is smaller in today's dollars. This is a teaching picture, not a live model.

Formula in words. Net occupancy = net rent + CAM + tax + insurance. Compare that to the gross rent.

Required inputs for this page
InputMeaning
Quoted rentThe sticker
Lease typeGross or net
Extra stackCAM, tax, insurance
CreditsFree rent and TI

Worked example

Here is a teaching sample. It is not customer data and not a result from a live client.

Lease A start rent$28,000
Lease B start rent$26,040
Discount rate8%
Sample NPV A$324,794
Lease A vs Lease B — Gross versus net sample
MetricLease ALease B
Start rent$28,000$26,040
Year-1 extras$16,000$17,120
Year-1 credit$8,000$4,400
Sample NPV$324,794$321,785
Cash-flow walk — Gross versus net sample
YearRentExtrasCreditCash outValue today
Year 1$28,000$16,000$8,000$36,000$33,333
Year 2$28,840$16,480$0$45,320$38,855
Year 3$29,705$16,974$0$46,679$37,055
Year 4$30,596$17,484$0$48,080$35,340
Year 5$31,514$18,008$0$49,522$33,704
Year 6$32,459$18,548$0$51,007$32,143
Year 7$33,433$19,104$0$52,537$30,655
Year 8$34,436$19,677$0$54,113$29,236
Year 9$35,469$20,267$0$55,736$27,882
Year 10$36,533$20,875$0$57,408$26,591
Sample NPV$324,794
Two bars on one scale for Lease A and Lease B. Teaching sample only.
Both options use the same rate. The lower bar is not automatically the better lease.

How to read the sample

Sample NPV for Gross versus net sample is about $324,794. A second path lands near $321,785. That gap is a talking point, not a promise.

Year notes for Gross versus net sample

  • Year 1 of Gross versus net sample has rent of $28,000.
  • Shared building cost is $16,000.
  • A credit of $8,000 lowers the cash you pay that year.
  • Cash out this year is about $36,000. The extra stack is the story on this net path.
  • Later cash gets a shrink for time. At 8 percent, year 1 is worth about $33,333 today.
  • Next, year 2 rent is $28,840.
  • CAM, which is a shared building cost, is $16,480.
  • There is no credit in this year.
  • You pay about $45,320 this year after extras and credits. Rent is low. Extras are not.
  • Time shrinks later cash. At 8 percent, year 2 is worth about $38,855 today.
  • Then year 3 rent is $29,705.
  • Extras for the building come to $16,974.
  • Credits skip this year.
  • The net cash this year is about $46,679. The gap stays after year one.
  • Waiting has a price. At 8 percent, year 3 is worth about $37,055 today.
  • After that, year 4 rent is $30,596.
  • The shared building cost this time is $17,484.
  • No extra credit shows up this year.
  • Cash out this year is about $48,080. A gross rival would show a higher rent and a thinner extra line.
  • Later cash gets a shrink for time. At 8 percent, year 4 is worth about $35,340 today.
  • In year 5 of Gross versus net sample, rent is $31,514.
  • Shared building cost is $18,008.
  • There is no credit in this year.
  • You pay about $49,522 this year after extras and credits. The last year still carries extras.
  • Time shrinks later cash. At 8 percent, year 5 is worth about $33,704 today.
  • Year 6 of Gross versus net sample has rent of $32,459.
  • CAM, which is a shared building cost, is $18,548.
  • Credits skip this year.
  • The net cash this year is about $51,007. Keep this later year in the sum for the sample.
  • Waiting has a price. At 8 percent, year 6 is worth about $32,143 today.
  • Next, year 7 rent is $33,433.
  • Extras for the building come to $19,104.
  • No extra credit shows up this year.
  • Cash out this year is about $52,537. The row still belongs in the sum for the long path.
  • Later cash gets a shrink for time. At 8 percent, year 7 is worth about $30,655 today.
  • Then year 8 rent is $34,436.
  • The shared building cost this time is $19,677.
  • There is no credit in this year.
  • You pay about $54,113 this year after extras and credits. Keep this later year in the sum for the long path.
  • Time shrinks later cash. At 8 percent, year 8 is worth about $29,236 today.
  • After that, year 9 rent is $35,469.
  • Shared building cost is $20,267.
  • Credits skip this year.
  • The net cash this year is about $55,736. The row still belongs in the sum for the long path.
  • Waiting has a price. At 8 percent, year 9 is worth about $27,882 today.
  • In year 10 of Gross versus net sample, rent is $36,533.
  • CAM, which is a shared building cost, is $20,875.
  • No extra credit shows up this year.
  • Cash out this year is about $57,408. Keep this later year in the sum for the long path.
  • Later cash gets a shrink for time. At 8 percent, year 10 is worth about $26,591 today.

Add those year values. The sample NPV for Gross versus net sample is about $324,794. This is a teaching sample, not a client result.

See how to normalize offers

Assumptions

  • The net extras are estimates. Live deals need landlord history.

Edge cases

A modified gross lease needs an expense stop, not a guess.

Common mistakes

  • Ranking on face rent across types.
  • Using last year's CAM as if it cannot rise.

Decision implications

If extras are missing, pause the rank.

Compare this to related metrics

Read what CAM means before you add a round number.

Read hidden occupancy costs for the rest of the stack.

Limits

  • Labels vary by market. Read the clause, not the nickname.

When this should not drive the choice

  • Do not treat NNN as automatically cheaper.

U.S. BLS describes how brokers advise clients on property deals. That is the job this page supports. See BLS broker occupation data.

NAIOP and BOMA are professional CRE homes for market and building-cost context. See NAIOP and BOMA.

Next step

This site is a validation / pilot concept. It is not generally available. Payment is not collected.

Try the comparison workflow

Ready for a bounded next step? Request Pilot Access or see how it works and compare commercial leases.

How do you normalize commercial lease proposals? · What belongs in a commercial lease comparison? · How do tenant-rep brokers compare lease offers?

Trusted sources

These are public references. They are not endorsements and not client results.

  1. Investopedia — net present value
  2. Investopedia — discount rate
  3. U.S. BLS — real estate brokers
  4. NAIOP
  5. BOMA
  6. FASB