Modified Gross Lease

MG

Modified gross leases split operating expenses between tenant and landlord. Learn expense allocation, base year provisions, and red flags to watch.

By Angel Campa, Founder · Updated March 2026

Overview

A Modified Gross Lease is a hybrid structure where the tenant pays a single gross rent amount, but certain operating expenses are negotiated to be the tenant's direct responsibility. The specific split of expenses is defined in the lease and varies by deal. Modified gross leases are common in office, flex, and light industrial markets where neither party wants a pure gross or pure net arrangement.

Expense Breakdown

Tenant Pays

  • •Base rent (gross amount)
  • •Utilities (typically metered separately)
  • •Janitorial services within the premises
  • •Interior maintenance and repairs
  • •Negotiated share of operating expense increases above a base year

Landlord Pays

  • •Property taxes
  • •Building insurance
  • •Common area maintenance
  • •Roof and structure repairs
  • •HVAC maintenance (in many variants)
  • •Landscaping
  • •Parking lot maintenance

Typical Profile

Typical Industries

OfficeFlex SpaceMedical OfficeLight Industrial

Typical Term Length

3–7 years

Pros & Cons

For Tenant

Pros

  • +Predictable monthly cost with landlord absorbing major expense categories
  • +Negotiable structure allows customized expense allocation
  • +Less exposure to unpredictable capital costs like roof or structure
  • +Shorter terms provide flexibility compared to NNN structures

Cons

  • −Expense allocation varies by deal — must read every provision carefully
  • −Base year provisions can shift costs significantly over time
  • −Less transparent than either a pure gross or pure net structure
  • −Negotiation complexity requires experienced counsel to protect tenant interests

For Landlord

Pros

  • +More income certainty than pure gross lease
  • +Tenant absorbs utility and janitorial costs directly
  • +Flexible structure accommodates a wide range of tenant requirements
  • +Operating expense increases above base year passed through to tenant

Cons

  • −More complex to administer than pure gross or pure net leases
  • −Annual reconciliation required for expense pass-throughs
  • −Disputes arise more frequently due to ambiguous expense allocation language
  • −Harder to market and explain to prospective tenants unfamiliar with hybrid structures

Critical Fields to Abstract

These are the highest-priority fields Lextract extracts from MG leases. Click any field to learn what it means and why it matters.

Base RentRent Commencement DateLease Expiration DateOperating ExpensesCam ChargesCam Cap Base YearTenant Improvement AllowanceRenewal OptionsPermitted UseSubletting Rights

Common Red Flags

Lextract automatically detects these red flags in MG leases. Click any flag to learn the impact and what to do.

No Cam CapMissing Audit RightsExcessive Management FeeNo Gross Up ProvisionNo Reconciliation Frequency

Compare With

Full Service Gross Lease

View expense breakdown and red flags →

Nnn Lease

View expense breakdown and red flags →

Gross Lease

View expense breakdown and red flags →

Industrial Gross Lease

View expense breakdown and red flags →

Frequently Asked Questions

What expenses does the tenant pay in a modified gross lease?

It depends on what was negotiated. Typically, tenants pay base rent plus their own utilities and janitorial costs. The landlord covers taxes, insurance, and structural maintenance. Operating expense increases above a base year amount are often passed through to the tenant proportionally. The specific allocation is defined in the lease and varies by deal.

Is a modified gross lease better than a full service gross lease?

For tenants who want maximum cost predictability, a full service gross (FSG) lease is simpler since the landlord absorbs all operating expenses. A modified gross lease gives the landlord some protection against expense increases while still shielding the tenant from major capital costs. Neither is inherently better — it depends on market conditions and the tenant's risk tolerance.

How does the base year work in a modified gross lease?

The base year establishes the baseline level of operating expenses included in the gross rent. In subsequent years, if operating expenses rise above the base year amount, the tenant pays their proportionate share of the increase. This protects the landlord from long-term expense growth while giving the tenant certainty in year one.

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