Lease Acceleration Clause
in Your Lease
What it actually means, what Colorado law says, what's specific to Denver - and exactly what to do. In plain English.
Quick Summary - What You Need to Know
- Colorado has no statute forcing a landlord to re-rent after a lease break, so check current Colorado statutes and case law.
- Colorado courts apply general contract mitigation principles, so a property manager who does nothing risks a reduced damages award.
- C.R.S. § 38-12-801 separately voids some lease terms, including penalties tied to an eviction notice and one-way attorney-fee clauses.
- Denver adds nothing on acceleration or mitigation, so state law and Colorado court decisions control from Baker to Green Valley Ranch.
- Texas and New York void any waiver of the mitigation duty by statute; Colorado gives you no section number to point at.
Understanding the Lease Acceleration Clause
A lease acceleration clause says that if you leave early, every remaining month of rent comes due all at once. On a Denver two-bedroom with seven months left, that paragraph turns a move into a five-figure demand letter.
Colorado is one of the quieter states on this. There's no residential duty-to-mitigate statute in the landlord-tenant code, so whether your landlord had to try re-renting is a case-law and contract question rather than a line you can highlight.
What renters assume
Renters read the acceleration paragraph, assume the whole balance is legally owed the day they hand back keys, and pay it rather than fight.
What is actually true
A clause is a claim, not a judgment. Colorado courts apply general contract mitigation principles, so a landlord who does nothing to re-rent risks a reduced damages award.
Colorado is the blank space on this chart. Washington, Illinois, Arizona, and New York all wrote the duty into statute; Florida wrote the opposite; Colorado wrote neither, which means outcomes here vary more than almost anywhere else on the list.
Plain English Version
Think of it like walking out on a gym contract: the club still wants every remaining month. In most states a law forces them to try filling your spot, but in Colorado that pressure comes from a judge weighing what was reasonable, not from a rulebook you can point to.
Rent Acceleration Clause Example - What the Wording Looks Like in Denver, CO
The sample clause below is real lease language - a court quoted it word for word, and then ruled on it. What the judge decided is at the bottom of this block.
Find the equivalent paragraph in your own lease and read the two side by side. The wording will differ; the moving parts rarely do.
The acceleration paragraph from the opinion. Read it as a partial paragraph: one more sentence, about late fees and interest on accelerated amounts, follows in the original and is not printed here:
If any monthly installment under this agreement is not paid when due and remains unpaid after a date specified by a notice to Tenant, the entire principal rent amount owed for the full lease term shall at once become due and payable at the option of the Landlord and judgment may be had for all said amounts due. The foregoing provision shall not relieve the Landlord of its obligation to mitigate damages. In the event the rental premises is re-rented to another for full value prior to expiration of the lease term, Landlord shall file Notice of Partial Satisfaction of any judgment entered to the extent of the third party rental agreement.
[…]
Quoted from the published opinion in Summers v. Crestview Apartments, 2010 MT 164, 357 Mont. 123, 236 P.3d 586 (No. DA 09-0489). Judicial opinions are not subject to copyright; the lease language is reproduced in limited part for commentary under 17 U.S.C. § 107.
“under this agreement”
In Colorado the agreement carries more weight than it does in the states on this page that write the duty into their code. Texas and New York both do, and both void a lease term that waives it, so there the statute settles the question before the lease is opened. Our Colorado record identifies no such statute for residential tenancies. That leaves the paragraph you signed as the first document anyone reads, with general contract mitigation principles from Colorado's courts shaping it from outside - and check the current statutes before relying on it.
“The foregoing provision”
In Texas or New York this sentence is surplus, because the duty it concedes is statutory and cannot be waived there. In Colorado it is worth more, because it is a promise inside your contract rather than a restatement of a code section - and our Colorado record locates the mitigation rule in general contract principles and case law rather than in the landlord-tenant statutes. A lease that contains this sentence and a lease that omits it are not obviously in the same position here.
“for full value”
Nothing in the lease obliges the landlord to accept less than the old rent, and no Colorado statute in our record supplies that obligation. What our Colorado record does supply is the consequence of inaction: Colorado courts apply general contract mitigation principles, so a landlord who does nothing at all risks a reduced damages award. The argument is available. It is simply built out of case law rather than out of a section number you can point at.
“of any judgment entered”
Judgments are where Colorado does have a statute pointed at lease terms. C.R.S. § 38-12-801 voids several kinds of clause outright, including penalties tied to an eviction notice or an eviction action and one-way attorney-fee clauses - the terms that make the process itself expensive. Our Colorado record for that section is about those voided terms and does not reach the mitigation question, which is why the rest of this page rests on case law - but it is the provision to read next to anything in your lease that adds a charge because a filing happened.
The Montana Supreme Court struck this paragraph down, and its conclusion is one sentence: “Thus, we conclude that the accelerated rent provision is unconscionable and therefore unenforceable.” The tenants had moved out of their apartment on October 13, 2006, and Crestview answered with a Statement of Deductions from the Security Deposit charging rent through the end of the lease in June - $6,505.75 billed against a $2,170 deposit. Two reasons carried the court. Acceleration undermines the landlord's duty to mitigate and reduces the incentive to re-rent promptly, because a landlord already holding a judgment for the whole term has little reason to fill the unit. And Crestview drafted the lease while these tenants had no meaningful choice and no opportunity to negotiate any of it. The case was reversed and remanded, and two justices wrote separately - their objection being that the majority had gone as far as treating acceleration clauses as unenforceable in themselves. So read the holding narrowly, as the majority wrote it: this provision, in this residential lease, unconscionable and unenforceable. It is a Montana decision and it binds no other state's courts. What travels is the reasoning, and the reasoning is about mitigation - which is exactly the question the statute in your own city's decode answers.
One court, one lease, one state. That answer is not automatically yours, and your lease may be worded to land differently. Use this to know what to look for and what to ask - your state's tenant hotline or a local tenant attorney can answer it for your document.
Colorado Law on Lease Acceleration Clause
- No Colorado statute imposes an express duty to mitigate on a residential landlord after a tenant breaks a lease.
- Colorado courts apply general contract mitigation principles, so a landlord who does nothing risks a reduced damages award.
- C.R.S. § 38-12-801 separately voids several lease terms, including penalties tied to an eviction notice or action and one-way attorney-fee clauses.
- Because the rule is judge-made rather than statutory, outcomes vary more than in states with an express mitigation statute.
Verify the current text in your state's landlord-tenant statutes.
Start with what isn't there. No Colorado statute imposes an express duty to mitigate on a residential landlord after a tenant breaks a lease, so the protection you have comes from judges applying ordinary contract principles instead of a statutory cap.
That difference is real. In Texas, a lease clause waiving mitigation is void under Tex. Prop. Code § 91.006, and New York's RPL § 227-e does the same; in Colorado you argue that the landlord's damages shrank because a reasonable owner would have re-rented. Colorado does void certain lease terms under C.R.S. § 38-12-801, including penalties tied to an eviction notice or action, so read the fine print and confirm the current statutes before you rely on any of it.
Colorado Tenant Protections
Colorado courts apply general contract mitigation principles, so a landlord who sits on an empty unit and does nothing risks having the damages award cut down. C.R.S. Section 38-12-801 voids several lease terms outright, including penalties tied to an eviction notice or action and one-way attorney-fee clauses. An acceleration clause does not collect itself, so a landlord who wants that money has to sue and convince a Colorado judge, which is exactly where the mitigation argument lives.
What's Specific to Denver
Figures are the state rule, or the stronger city ordinance where one exists. Verify the current law for your own situation before relying on it.
Denver adds nothing here. There's no city ordinance on rent acceleration or mitigation, so the same rules apply whether you're leaving a Cap Hill walk-up or a new build in RiNo, and state law plus Colorado case law is the whole story.
Local market reality does the heavy lifting instead. Denver absorbed a large wave of new apartments, and buildings offering a free month or waived fees re-rent quickly, which shrinks the shortfall a property manager can actually prove, so screenshot your old unit's new listing the day it reappears.
A fair one shows the math and credits rent from a new tenant. Colorado sets no formula, so the lease language carries more weight here.
Good sign. Written re-rental language gives you a contract term to enforce, since Colorado has no statute creating that duty for you.
Red flag. Acceleration on day one ignores mitigation entirely, and Colorado judges weigh what a reasonable owner would have done to re-rent.
Push back. C.R.S. § 38-12-801 voids one-way attorney-fee clauses, so that paragraph may not survive a challenge.
Red Flags to Watch Out For
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All remaining rent due at once
The clause bills every unexpired month the day you hand over keys. Colorado has no statutory cap on that demand, so the mitigation argument has to be made, not cited.
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No duty to re-rent language
Wording saying the owner need not look for a new tenant. Texas and New York void that waiver outright; in Colorado you're left arguing contract law.
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Acceleration stacked on re-letting fees
The lease takes all remaining rent and a separate lease-break or re-letting charge. Ask in writing which amounts are credited against the other before paying.
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Charges tied to an eviction notice
A fee that fires the moment a notice gets posted on your door. C.R.S. § 38-12-801 voids penalties tied to an eviction notice or action.
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Deposit kept plus accelerated rent
Your full deposit is forfeited and the balance still arrives. Demand a written itemization showing exactly what was credited against what.
Your Rights as a Denver Tenant
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Mitigation still gets argued
Colorado courts apply general contract mitigation principles, so a landlord who does nothing to re-rent risks a reduced damages award in court.
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Some lease terms are void
C.R.S. § 38-12-801 voids several lease provisions, including penalties tied to an eviction notice or action and one-way attorney-fee clauses.
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Proof, not a printed number
An acceleration clause is a claim. Ask for the re-rental date, the new rent, and receipts before you treat the balance on that statement as owed.
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Evidence you can gather yourself
The new listing for your old unit is your best exhibit. Screenshot the date and price the moment it reappears on Zillow or Apartments.com.
What To Do - Step by Step
Find the acceleration paragraph
Search your lease for 'accelerate', 'all remaining rent', or 'balance of the term'. Copy the exact wording, because that's the number your landlord will start from.
Give dated written notice
Email it and mail it. Colorado has no statute fixing when the clock starts, so a provable move-out date is your own protection.
Photograph everything, return keys
Document condition room by room and hand back keys on a date you can prove. Rent and damage disputes get settled from the same paper trail.
Track the relisting weekly
Check Zillow, Apartments.com, and the building's own site. A unit relisted within days is evidence the real shortfall is far smaller than the demand.
Demand an itemized statement
Ask in writing for the re-rental date, the new rent, and receipts for actual costs. Don't pay a lump sum with no math behind it.
Get Colorado tenant help
Call Colorado Legal Services or the Colorado Poverty Law Project before signing a repayment plan. Because the rule here is judge-made, early advice matters more.