When a business ends up with more space than it needs, subleasing can be a practical way to offset rent costs without breaking the lease. For smaller businesses or startups, subleasing from another tenant can be an affordable route into a furnished, functional space without the commitment of signing a direct long-term lease.
This guide covers what subleasing involves, how to approach it from either side of the arrangement, and what to watch out for before you sign anything.
Key Takeaways
- In a sublease, the original tenant remains legally responsible to the landlord even after a subtenant moves in.
- Many leases require written landlord consent before a sublease can proceed; skipping that step can put you in breach of your original lease.
- Office sublease markets vary by location and building quality; sublessors often compete with direct listings from landlords as well as other subleases, which can affect how quickly space moves and on what terms.
- Subtenants inherit the terms of the original lease, including any unfavorable conditions.
- Both sides should have a real estate attorney review the sublease agreement before signing.
What Is a Sublease?
A commercial lease is a written agreement between a landlord and a tenant. In a sublease, the original tenant rents out part or all of that space to a new tenant. The original tenant becomes the sublessor; the new tenant becomes the sublessee or subtenant.
That arrangement is different from a lease assignment. In an assignment, the original tenant transfers their lease obligations to a new tenant entirely and steps out of the picture. In a sublease, the original tenant stays on the hook for the original lease regardless of what the subtenant does. If the subtenant stops paying, the sublessor still owes the landlord. That distinction carries real financial weight and is worth understanding clearly before you proceed.
Sublease vs. Lease Assignment
The Office Sublease Market
Office sublease markets vary significantly by location, building quality, and local economic conditions. Sublessors often compete not only with other subleases but also with direct listings from landlords. In practical terms, this frequently means:
- Finding a suitable subtenant can take longer than expected, especially for secondary or older space.
- Pricing the sublease at or below your own rent obligation is common, and sometimes necessary, to attract interest.
- Subtenants often have stronger negotiating leverage.
- High-quality, well-located space in strong buildings tends to move faster than older or poorly configured space.
Conditions are never static. Research local vacancy rates, comparable subleases, and asking rents in your specific metro, submarket, and building class before setting your price or timeline. Our national office report tracks these trends across major U.S. markets and is a useful starting point for gauging where your submarket sits.
7 Steps to Sublease Your Office Space
1. Review your original lease
Not all commercial leases permit subleasing, and those that do often include restrictions. Read the relevant clauses carefully before taking any other steps. If you want a broader refresher on the structure of your agreement, our guide to how commercial rent is calculated covers the lease types and terms most often in play. A real estate attorney can help you identify what applies in your specific case.
2. Get landlord approval if required
Many leases require written consent from the landlord before a sublease can proceed. Some also give the landlord the right to reclaim the space or approve the incoming tenant. Proceeding without consent where it is required puts you in breach of your original lease.
3. Talk to neighboring tenants
Tenants already in the building may be looking to expand or may know someone who is. It costs nothing to ask and can save significant time.
4. Screen applicants carefully
Evaluate prospective subtenants on creditworthiness, business stability, and compatibility with any shared space or services. A subtenant who defaults or causes damage becomes your problem to resolve with the landlord, not theirs. A commercial real estate broker can help with vetting, pricing, and negotiation if you would rather not run the process alone.
5. Set a realistic asking rent
Research comparable sublease and direct listings in your area. Factor in that your space is already built out and furnished, which has value, but also that the sublease market is competitive in most metros. Price accordingly and be prepared to negotiate.
6. Collect a security deposit
A security deposit provides some protection against damage or non-payment. Negotiate the amount as you would any other lease term.
7. Put everything in writing
Agree on all terms and execute a written sublease agreement. It should cover rent, term length, permitted use, maintenance responsibilities, insurance obligations, and what happens if either party defaults. For guidance on the coverage typically required, see our overview of commercial lease insurance.
Common Lease Restrictions on Subleasing
Leases that permit subleasing often attach conditions to how it can be done. Common restrictions include:
- Subleasing to an existing tenant in the same building may be prohibited.
- The landlord may have the right to recapture the space rather than consent to a sublease.
- In some leases, any rent the sublessor collects above their own obligation must be shared with or paid entirely to the landlord.
- The subtenant may need to meet a minimum credit standard set by the original lease.
- Subleasing may be prohibited if the landlord has comparable vacant space available in the building.
- Some leases require the entire space to be sublet rather than just a portion.
These conditions vary across commercial leases and jurisdictions. What applies in one situation may not apply in another, which is one reason legal review matters before you move forward.
Pros and Cons for Both Sides
Is Subleasing Right for You?
The answer depends on your lease, your space, and your local market. For businesses carrying more space than they need, subleasing can meaningfully reduce occupancy costs, though results vary by location and building quality. For smaller businesses or startups, subleasing can offer a practical way into a furnished, functional space without a long-term commitment.
In either case, this is a decision with legal and financial implications that go beyond what any single guide can cover. Review your lease carefully and consult a licensed real estate attorney familiar with commercial leases in your market before proceeding.
Frequently Asked Questions (FAQ)
What is the difference between a sublease and a lease assignment?
In a sublease, the original tenant retains responsibility for the lease and acts as a landlord to the subtenant. In an assignment, the original tenant transfers their lease obligations to a new tenant and typically exits the agreement entirely. Both usually require landlord approval.Do I need my landlord’s approval to sublease?
In most cases, yes. Many commercial leases require written landlord consent before a sublease can proceed. Some leases also give the landlord the right to approve or reject the proposed subtenant, or to reclaim the space rather than allow the sublease. Check your lease and get any required consent in writing before proceeding.Can I charge my subtenant more rent than I pay?
It depends on your lease. Some leases prohibit the sublessor from collecting more than their own rent obligation. Others require that any surplus above the base rent be shared with or paid to the landlord. Read the relevant clause carefully and get legal guidance if it is unclear.What happens if my subtenant stops paying rent?
As sublessor, you remain responsible to the landlord for rent regardless of whether your subtenant pays you. A subtenant default does not pause your obligations under the original lease. This is one of the more significant financial risks in any sublease arrangement and one reason tenant screening and a well-drafted sublease agreement matter.What happens if my sublessor stops paying the landlord?
If you are a subtenant and your sublessor falls behind on their rent, the landlord may have grounds to pursue eviction proceedings that affect you even though you are current on your own payments. This risk is difficult to eliminate entirely, but reviewing the sublessor’s financial stability before signing offers some protection.
The information in this article is intended for educational purposes only and does not constitute legal or financial advice. Lease terms, local regulations, and market conditions vary by location and situation. Consult a qualified real estate attorney or licensed commercial real estate professional before making decisions about subleasing.
Matthew Preston
Content Writer, CRE News & Market Analysis
Matthew has covered commercial real estate for CommercialCafe since 2022. He focuses on the office and industrial sectors, reporting on leasing, development, and investment across national markets and individual submarkets. His work draws on data and original research. He also writes about demographic shifts and urban innovation in U.S. cities. The New York Times, The Real Deal, Bisnow, The Business Journals, and Yahoo Finance have cited his reporting.
