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What to know before signing a commercial lease in Boston

On Behalf of | Feb 26, 2026 | Commercial Real Estate |

Renting space for a business is one of the biggest financial commitments a company can make. In Boston, where commercial rents remain among the highest in the country, the terms locked into a lease can shape a business’s finances for years. Unlike residential agreements, commercial leases in Massachusetts offer far fewer built-in protections for tenants, which means the details matter more than most people realize.

Why commercial leases work differently

Massachusetts treats commercial leases primarily as contracts between two private parties. The consumer safeguards that protect residential renters, such as security deposit rules and habitability standards, generally do not extend to businesses. That gives landlords significant flexibility in drafting terms and puts the responsibility on the tenant to negotiate favorable conditions before signing.

Because nearly every clause is open to negotiation, business owners should treat the initial draft of a lease as a starting point rather than a final offer.

Clauses that deserve a closer look

A few sections of a commercial lease tend to carry the most risk if they go unreviewed. These include:

  • Use clause: This spells out what the tenant can and cannot do in the space. A clause written too narrowly could block the business from growing or changing direction later on.
  • Repairs and upkeep: Many commercial leases push repair costs onto the tenant, even for structural problems. Knowing who handles what ahead of time helps avoid surprise bills.
  • Subletting rights: If the business needs to move or scale down, strict limits on subletting can leave it paying rent on empty space with no way out.
  • Rent increases: Most leases include built-in rent bumps tied to a set rate or price index. Reviewing how rent climbs over the full term helps with long-range planning.

Even minor wording changes in these sections can shift thousands of dollars in costs over the life of a lease.

Check zoning before you commit

A landlord may approve a tenant’s use of a space, but that does not override local zoning rules. Boston’s zoning code varies from one neighborhood to the next, and running a business outside the permitted category can lead to fines or forced closure. Massachusetts guidance on commercial lease due diligence advises researching zoning at the town planning department to identify allowed and prohibited uses before signing. Confirming zoning compliance early on saves time and protects the investment a tenant makes in building out the space.

Taking the right steps before signing

A commercial lease is one of the longest and most costly commitments a business will take on. Rushing through the terms or assuming the landlord’s draft is standard can lead to problems that last for years. Reviewing each clause carefully, pushing back on terms that feel one-sided and making sure the lease reflects what was discussed during negotiations all help put the business in a stronger position from day one.