Estoppel Certificate

Definition

An estoppel certificate is a signed statement from a tenant confirming the key facts of its lease. It covers rent, term, deposit, and whether either party is in default. Once delivered, the tenant cannot later claim terms that contradict it. Buyers and lenders require one before closing.

How it works

The certificate protects whoever steps into the landlord’s position. A buyer can read the lease and the rent roll, but only the tenant can confirm the rent roll is true. Signing estops that tenant from later asserting a rent credit, a side letter, or an option that never made it into the file.

A standard form asks for commencement and expiration dates, current base rent, and the escalation schedule. It also covers the security deposit, prepaid rent, and renewal or purchase options. Unfinished tenant improvement work belongs in the same list. So does an unpaid TI allowance. The job of the form is to surface what the file does not show.

Standard leases give the tenant 10 to 15 business days to return the certificate after a written request. A deemed-approval clause makes silence past that deadline count as acceptance of the landlord’s version. Enforceability varies by state, so closing on silence alone carries risk.

The nearest neighbor is the SNDA, the subordination, non-disturbance and attornment agreement. An estoppel reports facts as of one date. An SNDA changes rights going forward: the lease sits behind the mortgage, and the tenant keeps possession after a foreclosure. Lenders ask for both in the same package. They do different jobs.

In practice

Timing matters as much as the form.

Send estoppel requests in the first half of the due diligence period, not in the final week. Tenants read the request as a signal that the building is trading, and some use the signature as leverage to reopen terms. Illustrative case: a retail tenant returns the form with a handwritten note saying it has withheld $2,400 a month against an HVAC replacement the seller promised. That line moves the escrow holdback before it moves the price.

Lease and estoppel language is state-specific. Have a licensed real estate attorney review any form before it goes to a tenant.

SNDA Agreement

An SNDA agreement is a three-party contract signed by a tenant, a landlord, and the landlord’s mortgage lender. It ranks the lease below the mortgage lien. In exchange, the lender agrees not to terminate the lease at foreclosure, and the tenant agrees to accept the buyer as its landlord.

The name spells out the three promises: Subordination, Non-Disturbance, and Attornment.

Subordination comes first. In most U.S. states, lien priority follows recording order, so a lease signed and recorded before the mortgage can outrank it and survive a foreclosure sale. Subordination reverses that order. The tenant accepts that the mortgage sits ahead of the lease.

Non-disturbance is the lender’s side of the trade. As long as the tenant pays rent and stays out of default, the lease continues after a foreclosure sale and the tenant keeps possession. Without that promise, a lender foreclosing on the property can wipe out the lease and evict a paying tenant. This is the clause tenant counsel fights over, and it’s the reason a tenant will sign away lien priority at all.

Attornment closes the loop. The tenant recognizes the foreclosure purchaser as the new landlord under the existing lease, with no need to sign a new one.

For an owner, the practical pressure comes at financing. Loan commitments on stabilized commercial property list signed SNDAs from named major tenants as a closing condition. Most modern leases anticipate this with a subordination clause that gives the tenant 10 to 20 days after written request to sign the lender’s reasonable form. A tenant that ignores the deadline can stall a closing.

Do not confuse an SNDA with an estoppel certificate. An estoppel confirms current facts as of a stated date: rent, remaining term, security deposit, outstanding landlord defaults. An SNDA sets future rights if the loan goes bad. Lenders request both in the same package, which is why owners treat them as one item.

In practice

On a refinance of a multi-tenant office building, the lender required SNDAs from every tenant occupying more than 5,000 square feet. Two tenants pushed back until the lender accepted a cap on its liability for the prior landlord’s defaults and unreturned security deposits.

SNDA terms are negotiated legal documents. Have any lender form reviewed by a licensed real estate attorney in the property’s state before circulating it to tenants.

Letter of Intent (Lease)

A letter of intent (LOI) for a lease is a short, mostly non-binding document that sets out the main business terms before attorneys draft the lease. It covers the premises, term, base rent, escalations, tenant improvement allowance, and options. Signing one narrows what stays negotiable later.

The LOI moves a deal from a tour to paper. The landlord’s broker usually issues the first draft, the tenant counters, and two or three rounds run over a week or two.

Standard contents: premises and rentable square footage, term length, commencement, base rent per square foot, annual escalations, free rent months, tenant improvement (TI) allowance, expense structure (NNN, modified gross, full service), renewal and expansion options, security deposit, and the broker who gets paid.

Most of the letter is non-binding. A handful of clauses are not. Confidentiality, governing law, brokerage commission, and exclusivity survive on their own terms. Exclusivity is the one tenants misread: the landlord agrees to stop marketing the space for a stated window, commonly 30 days, and that clock starts on signature.

The closest adjacent term is the term sheet. Same economics, different packaging. A term sheet is a bulleted grid; an LOI is a letter with signature blocks. The executed lease supersedes both, and a well-drafted LOI says so in one line.

Leverage peaks before signature. Anything the LOI leaves out (audit rights, relocation clause, holdover multiple, restoration obligation at expiry) returns as landlord-favorable boilerplate in the lease draft, and reopening it costs the tenant something.

In practice

Illustrative deal: a tenant signs an LOI for 4,000 rentable square feet, five-year term, $30/SF NNN with 3% annual bumps and a $40/SF TI allowance. The lease draft then arrives with a restoration clause the LOI never mentioned, and the tenant pays to demolish its own build-out on the way out.

An LOI can create binding obligations. Have a licensed real estate attorney review it before signing.

Base Rent

Definition

Base rent is the fixed amount a tenant pays for occupying space, set before operating expenses, real estate taxes, insurance, or percentage rent are added. US landlords quote it as an annual dollar figure per rentable square foot. It anchors every escalation and renewal option written into the lease.

How it works

Base rent covers the space itself. Everything else the landlord bills, CAM charges, property taxes, insurance, utilities, arrives as additional rent under a separate clause. That split is why two suites quoted at the same number can cost very different amounts per year.

A full-service gross quote already folds those costs in; a triple net quote does not.

Escalation language sits directly next to base rent in the lease document. US office and retail leases raise it on each anniversary, either by a fixed percentage or by a stated dollar step. A 3% annual bump compounds. By year five the tenant pays noticeably more per square foot than at signing, and the renewal option usually prices off that final-year figure.

Base rent is not the same as effective rent. Effective rent spreads free-rent months and tenant improvement allowances across the full term. A landlord who holds face base rent high while granting four months free protects the building’s quoted rent roll. The tenant’s real cost drops. Ask for both numbers before comparing two deals side by side.

Formula

Annual base rent = rentable square feet × base rent per SF
Monthly base rent = annual base rent ÷ 12

Illustrative example: 4,000 RSF at $30.00 per SF equals $120,000 per year, or $10,000 per month. Apply a 3% escalation and year-two base rent becomes $123,600. Figures are illustrative only.

In practice

On a letter of intent, base rent is the first line a tenant negotiates and the last one a landlord concedes. Abatement months and TI dollars move much faster.

Effective Rent

Effective rent is the average rent a landlord actually collects over a lease term after concessions: free rent, tenant improvement allowances, moving money. Face rent is the number printed in the lease. Effective rent is what the deal is worth once every giveaway is spread across the term.

Two numbers describe every lease. Face rent is what the tenant pays per square foot on paper. Effective rent is what the owner banks after the concession package is netted out and averaged across the months. On a 60-month deal with six months free, the gap opens 10% before a single TI dollar is counted.

Brokers meet the term in two forms. Straight-line net effective rent divides net cash by the term and ignores timing. Discounted effective rent runs the same cash flows through an NPV at the owner’s discount rate, which penalizes concessions taken in year one. Institutional owners underwrite the discounted version. Most comp databases publish the straight-line version, so a comp and an underwriting memo can describe the same lease with different numbers.

The convention on what gets deducted is not settled. Some shops net out abatement only. Others also subtract TI allowance and leasing commissions, which produces a lower figure and a truer picture of landlord cost. State your convention before you compare two offers, or the comparison is noise.

Formula

Net effective rent ($/SF/year) = (total base rent over term − abatement − TI allowance − leasing commissions) ÷ (rentable SF × term in years)

Illustrative example. 10,000 SF, five-year term, $30.00/SF face rent, six months free, $20.00/SF TI allowance, commissions excluded.

  • Total base rent: $1,500,000
  • Abatement: $150,000
  • TI: $200,000
  • Net: $1,150,000 ÷ 50,000 SF-years = $23.00/SF

The face-to-effective spread is 23%. Add commissions and it widens.

In practice

A tenant rep pushes for two extra free months rather than a lower face rate. The owner keeps the headline comp intact for the next appraisal and the next loan, and the tenant lands the same net occupancy cost.

Holdover Tenant

Definition

A holdover tenant stays in the space after the lease term ends, without a signed renewal or extension. The landlord then has two paths. Accept rent and create a new periodic tenancy, or refuse it and move to evict. Most leases set holdover rent at 150% to 200% of the last base rent.

How it works

Possession without a new agreement puts the tenant in what most states call a tenancy at sufferance. The landlord holds the right to remove them. That right survives even if the tenant keeps paying on time. Once the landlord accepts holdover rent without reserving its rights, courts in many states convert the arrangement into a month-to-month tenancy. The eviction path then closes until proper notice runs.

That distinction matters more than the label. A month-to-month tenancy is a deal both sides agreed to. A holdover is one side staying put.

Well-drafted leases anticipate this. The holdover clause names a rent multiplier, states that acceptance of payment creates no new term, and adds consequential damages once the holdover passes 30 or 60 days. Those damages cover what the owner owes an incoming tenant when delivery is late: free rent concessions, swing space, lost construction time.

Owners with a signed successor lease carry the real exposure. A retail landlord who misses the promised delivery date may trigger a termination right in the new lease. The incoming tenant can also claim moving and buildout costs. The holdover premium rarely covers that.

Eviction timelines and notice periods are set by state statute and, in cities like New York, by local rules. Consult a licensed attorney in the property’s jurisdiction before acting on a holdover.

Calculation

Holdover rent = last month’s base rent × holdover multiplier

Illustrative example. Base rent is $10,000 per month and the clause sets 150%. Holdover rent becomes $15,000 per month. Operating expense pass-throughs continue on top of that figure. Two months of holdover therefore costs the tenant $10,000 above the contract rate. Figures are illustrative only.

In practice

The holdover clause is one of the last items negotiated in office and industrial deals. Tenants push for 125% during the first 30 days. Owners hold at 150% and add consequential damages after that window.