The Core Decision Framework: Sublease or Assign?

Before diving into mechanics, here's the decision framework that drives most commercial tenant transfer decisions:

Your Situation Better Path Why
Downsizing — keeping part of space Sublease (partial) Can't assign part of a lease; sublease allows division of space
Exiting entirely, permanent closure Assignment Cleaner break; shifts ongoing liability to assignee
Temporary exit (returning in 2–3 years) Sublease You retain your lease rights; subtenant holds temp
Business acquisition or merger Assignment Acquirer assumes lease as part of deal; assignment is standard
Lease below current market rent Sublease Can capture profit spread (subject to profit-sharing clause)
Lease above market rent Assignment Get off the obligation; sublease would require below-market pricing you'd still fund
Landlord unlikely to consent to assignment Sublease Landlord comfort is higher when original tenant stays on the hook

Liability: The Most Important Difference

The liability difference between sublease and assignment is where most commercial tenants get confused — and where the consequences are most severe if they pick wrong.

How Sublease Liability Works

In a sublease, the legal structure is:

  • You (the original tenant) remain the landlord's primary counterparty — you owe rent, you owe compliance, you owe it all
  • Your subtenant pays rent to you, not to the landlord directly
  • If the subtenant defaults, you must still pay the landlord
  • If the master lease terminates (for any reason), the sublease typically terminates too — the subtenant has no rights against the landlord unless an SNDA is in place

Subtenant default risk: If your subtenant stops paying rent, you don't stop paying your landlord. You've essentially taken on the credit risk of a small business tenant with no security deposit from the landlord's perspective. Always require a meaningful security deposit from your subtenant and verify their financials before signing.

How Assignment Liability Works

In an assignment, the assignee takes your place in the lease — but your liability doesn't automatically end. Here's the nuance most tenants miss:

  • With landlord release (express release): You are fully discharged. Landlord can only pursue the assignee. This is what you want but rarely get without negotiating for it.
  • Without express release: Under common law privity of contract, you remain secondarily liable. If the assignee defaults, the landlord can come after you after exhausting remedies against the assignee.
  • Anti-deficiency provisions: Some leases have specific language stating assignment does not release the original tenant — know your lease terms.

The assignment release trap: Tenants assume "assignment = clean exit." It isn't unless you get a written release from the landlord. Without it, you could be liable for rent defaults three years after you vacated. Always negotiate for an explicit written release as part of the landlord's consent to assignment.

~30%
of commercial lease assignments result in partial original-tenant liability without explicit release
60 days
typical landlord response time for sublease/assignment consent requests
50/50
typical profit-sharing split on above-market sublet rent in many lease forms

Landlord Consent Strategies

Most commercial leases require landlord consent for both subleases and assignments. The consent standard matters enormously:

Consent Standard Meaning Tenant Strategy
Sole and absolute discretion Landlord can say no for any reason or no reason Relationship matters most — get the landlord invested in your success
Not unreasonably withheld Landlord can only reject for legitimate business reasons Present a financially strong, same-use tenant; document the request carefully
Not to be unreasonably withheld or delayed Time constraint added — landlord must respond within defined period Calendar the deemed-consent window; send certified mail to start the clock
No consent required Tenant can sublease/assign freely Still give notice; avoid surprise; use the opportunity to build goodwill

Building a Winning Consent Package

Regardless of the consent standard, a professional consent package dramatically improves both speed and approval rates. Include:

  1. Formal written request letter — reference the lease section, request consent, name the proposed sub-tenant/assignee, summarize the transaction
  2. Proposed subtenant/assignee business profile — company background, years in business, number of employees, industry overview
  3. Financial statements — 2–3 years of audited or reviewed financials, most recent tax returns, and/or bank statements showing reserves
  4. Credit references — landlord references, bank reference, trade references
  5. Use statement — confirm the incoming party will use the space for permitted use (or request a use amendment)
  6. Draft sublease/assignment document — shows the landlord exactly what they're consenting to; reduces back-and-forth

Landlord psychology: Landlords primarily care about one thing: will I get paid? Show that the incoming tenant is creditworthy, that the use is appropriate, and that the original tenant's obligations are preserved (for subleases) or transferred to a solid replacement (for assignments). Make it easy for the landlord to say yes.

Recapture Rights: The Hidden Risk

Many commercial leases give the landlord a recapture right: upon receiving a sublease or assignment request, the landlord may terminate the tenant's lease and deal directly with the incoming party (or not). This completely defeats the tenant's purpose.

Before submitting a consent request, read your recapture provision carefully:

  • Does it apply to all subleases and assignments, or only if you're requesting to sublease/assign more than a certain percentage of the space?
  • Is there a time window after which recapture is no longer available?
  • Does recapture relieve you of all future rent obligations?
  • Can you withdraw the consent request if the landlord threatens to recapture?

Some tenants do an informal "temperature check" with the landlord before formally submitting a consent request — gauging whether the landlord would exercise recapture if the formal request were submitted. This preserves your options without starting the recapture clock.

Marketing a Commercial Sublease: How to Find a Subtenant

Unlike residential subleases (often Craigslist or word-of-mouth), commercial subleases require a more systematic approach:

Channels That Work for Commercial Subleases

  • LoopNet / CoStar: The dominant commercial listing platforms. A professional listing with floor plans, photos, and clear terms is essential.
  • Crexi: Growing alternative to LoopNet; often lower-cost for smaller spaces
  • Local commercial brokers: Co-broke with a tenant-rep broker — they bring their client base in exchange for commission split
  • LinkedIn targeted outreach: For niche-use spaces, direct outreach to businesses in your industry can be more effective than broad listings
  • Industry associations and co-working networks: For smaller spaces, local business groups may have members looking for affordable commercial space

Sublease Marketing Package

Prepare a sublease information package that includes:

  • Floor plan with measurements (show gross and usable square footage)
  • Photos: exterior, lobby/common areas, your suite, any improvements you've made
  • Remaining lease term and expiration date (be honest — short remaining term reduces value)
  • Current contract rent vs. market rent (if below market, highlight the discount)
  • Operating expenses and any caps
  • Any tenant improvement allowance or free rent you're offering
  • Landlord consent status (if already obtained, it's a selling point)

Pricing a Commercial Sublease Below Market

Pricing is where most sublease deals succeed or fail. Here's the framework:

Understand Your True Cost Basis

Your cost basis is not just base rent — it's the total occupancy cost you need to cover:

  • Base rent (your contract rent)
  • Operating expense pass-throughs or NNN charges
  • Any amortized tenant improvement allowances you've received
  • Brokerage commissions for the sublease transaction
  • Any tenant improvement allowance you need to offer the subtenant
  • Free rent or other concessions

Sublease Pricing Scenarios

Scenario Your Contract Rent Market Rent Recommended Sublease Price Your Net Cost
Below market lease $25/SF $35/SF $32/SF (10% below market) Positive carry: earn $7/SF minus profit split
At market lease $35/SF $35/SF $30–32/SF (slight discount) Small shortfall funded by you
Above market lease $45/SF $35/SF $32–35/SF You fund $10–13/SF shortfall

Profit-sharing clause check: If your lease is below market and you're pricing the sublease above your contract rent, check your lease's profit-sharing provisions. Many commercial leases require you to split the excess rent (after deducting transaction costs) 50/50 with the landlord. Calculate the net economics before advertising a premium sublease price.

Incentives to Offer Subtenants

In a competitive sublease market, subtenants expect concessions. Common incentives:

  • Free rent period — 1–3 months free to cover move-in/fit-out time
  • Tenant improvement allowance — cash contribution toward modifications
  • Furniture included — existing furniture passed to subtenant (avoids your removal/storage cost)
  • Below-market pricing — most effective single incentive
  • Landlord consent pre-obtained — reduces subtenant's deal uncertainty

Key Documents: Sublease vs. Assignment Agreement

Sublease Agreement Essential Provisions

  • Defined demised premises (attach floor plan)
  • Sublease term (must expire before master lease)
  • Rent and operating expense allocation
  • Permitted use (must be consistent with or narrower than master lease)
  • Subtenant insurance requirements (name you and landlord as additional insured)
  • Subtenant indemnification of your obligations to landlord
  • Assignment/further subletting restrictions (typically require your consent)
  • Master lease compliance (subtenant must comply with all master lease obligations)
  • Master lease termination effect (if master lease terminates, sublease terminates)
  • Security deposit (cash or letter of credit)

Assignment and Assumption Agreement Essential Provisions

  • Assignment effective date
  • Description of lease being assigned (attach full lease and all amendments)
  • Assignee assumption of all obligations from effective date forward
  • Representations from assignee regarding financial condition and permitted use
  • Landlord consent (often a tri-party document)
  • Original tenant release language (if obtainable)
  • Security deposit transfer (or new deposit from assignee)
  • Assignee indemnification of assignor for post-assignment obligations

Sublease vs Assignment Checklist

  • Read the assignment/subletting article in your master lease in full
  • Identify the consent standard (absolute / not unreasonably withheld / not required)
  • Check for recapture rights — assess landlord motivation before submitting
  • Decide: full exit (assignment) vs. partial or temporary (sublease)
  • Evaluate your contract rent vs. market to determine pricing strategy
  • Check profit-sharing provisions if subleasing above your contract rent
  • Verify permitted transfer exceptions (affiliates, M&A, entity restructurings)
  • Prepare complete landlord consent package: business profile + financials + draft agreement
  • For assignment: negotiate explicitly for landlord release language
  • Require subtenant/assignee insurance naming you and landlord as additional insured
  • Verify subtenant financials — you carry their credit risk in a sublease
  • Ensure sublease expiration is before (not on) master lease expiration
  • Get all three parties to sign: original tenant, incoming party, landlord
  • Update your lease abstract to reflect the transfer and new liability profile

FAQs: Sublease vs. Assignment Guide

What is the main liability difference between sublease and assignment?
In a sublease, the original tenant remains primarily liable to the landlord throughout the original lease term — the subtenant pays you, and you pay the landlord. In an assignment, the assignee steps into your shoes and assumes direct liability to the landlord. However, unless the landlord expressly releases you, you remain secondarily liable (as a guarantor) even after assignment. The practical lesson: always negotiate for an express written release from the landlord as part of the consent process.
Can a landlord unreasonably withhold consent to a sublease?
Depends entirely on your lease language. Leases fall into three categories: (1) subletting requires consent with no standard specified — landlord has nearly absolute discretion; (2) consent not to be unreasonably withheld — landlord can only reject for legitimate business reasons (insufficient financial capacity, incompatible use, recapture rights); (3) no consent required — tenant can sublease freely. In categories 1 and 2, courts have generally found that objecting to a financially qualified, same-permitted-use subtenant is unreasonable. Document your consent request carefully and follow up in writing.
How do you price a commercial sublease below market?
Calculate your carrying cost first: current rent + operating expenses + any TI amortization. Then discount based on deal urgency and market conditions. If your contract rent is above market, expect to fund the gap — market rent is your ceiling regardless of your cost. If you're below market, you can price above your contract rent (but check profit-sharing provisions). As a starting point, price 10–15% below comparable direct market space to account for sublease "discount" — subtenants pay less because they're taking on sublease-specific risks like master lease termination.
What landlord consent strategies work best for assignment?
Package your consent request professionally: include a financial statement and business profile of the proposed assignee, demonstrate they're as creditworthy as you were at lease signing, explain the business rationale, and offer to maintain your personal guarantee for a defined period (1–2 years) as a transition comfort measure. Avoid submitting weak assignees — one rejection puts the landlord on guard. Come with a decision-ready package that makes approval faster and easier than rejection.
What is a recapture right and how does it affect sublease or assignment?
A recapture right allows the landlord, upon receiving a sublease or assignment request, to terminate your lease and deal directly with the incoming party — cutting you out entirely. If your lease has a recapture right, be strategic about timing and presentation. Some tenants pre-screen with the landlord informally to gauge recapture intent before submitting a formal request (which starts the clock). Check whether your recapture right applies to all transfers or only transfers above a certain size or of the full premises.
Can I sublease part of my space instead of the whole thing?
Yes — partial subleases are common and often require the same landlord consent process as a full sublease. Partial subleases introduce complexity around shared common areas, proportional rent allocation, utility responsibilities, and access rights. The sublease agreement must clearly demise the subleased space with an attached floor plan and allocate all cost-sharing obligations explicitly. Some leases require landlord consent even for partial subleases below a certain square footage threshold, so read your lease carefully before assuming a small partial sublease is consent-free.

Use LeaseAI to Understand Your Transfer Rights

Before you approach any subtenant or assignee — or request landlord consent — you need to know exactly what your lease says. The transfer provisions (assignment/subletting article, recapture rights, profit-sharing clauses, permitted transfer exceptions) are scattered across multiple sections and written in dense legal language.

LeaseAI extracts all transfer-related provisions in plain English in under 90 seconds: your consent standard, recapture exposure, profit-sharing obligations, and any equity transfer triggers.

Know Your Transfer Rights Before You Negotiate

Upload your lease and get a plain-English summary of all sublease, assignment, recapture, and profit-sharing provisions in 90 seconds.

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The Bottom Line

The sublease vs. assignment decision comes down to three factors: how permanent your exit needs to be, how much ongoing liability you can absorb, and what your landlord will approve.

Sublease when you want flexibility, a partial transfer, or a temporary arrangement — but build in robust protections against subtenant default and understand you remain on the hook. Assign when you want finality — but fight hard for an express landlord release, or the assignment that supposedly freed you may leave you paying rent on a space you haven't occupied for years. In both cases, start with your lease, understand the consent requirements, and execute the process with precision.