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Substantial Completion Rent Start Calculator

Rent starts at SC or delivery. This calculator trues up the date.

$

Rent start shift (days)

35

True-up free rent value

$72,333

Total free rent value

$258,333

How the math works

SC shift adds day-for-day free rent on top of negotiated months.

A 35-day SC slip on a $62k/month rent creates ~$72k of true-up free rent on top of the 3 months originally negotiated, for a total $258k free rent package. Tenants should track actual vs target SC date weekly — the dollars add up fast on slippage.

How to Use

  1. Enter target SC date offset days.
  2. Enter actual SC date offset days.
  3. Enter base monthly rent.
  4. Enter free rent months negotiated.
  5. Read effective rent start date and true-up.

Frequently Asked Questions

What is SC?

Substantial completion = space usable for its intended purpose, permits closed, CO in hand. Architect certifies. Triggers rent start, warranty periods, and often TI reimbursement. Definition matters — many leases carry detailed checklist of SC requirements.

True-up mechanics?

If SC later than target, free rent or delay credit applies. If SC on time but CO pending for landlord reasons, most leases extend rent start. Documentation of architect certification and CO receipt crucial for clean true-up.

Punchlist carveout?

SC doesn't require zero-punchlist. Standard clause: SC certified when space usable despite minor punchlist items not blocking tenant operation. Landlord commits to complete within 30-60 days post SC. Disputes center on 'minor' vs 'material'.

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