CRE 101 · deweyluong.realtor

Expense Stops and Base Years Explained: How a Georgia Tenant Pays Only Its Share of Increases — and How a Low Base Year Quietly Raises the Bill

In a gross or modified-gross lease, the landlord covers operating expenses up to a line, and the tenant pays its share of everything above that line. The line is set one of three ways: a base year (the building's actual expenses in a stated year), a stated expense stop (a fixed dollar amount per square foot), or a stipulated amount written into the lease. Everything after signing is arithmetic against that line — which is why the line itself is the fight. In the made-up example on this page, a tenant holds 5,000 SF of a 50,000 SF Georgia building — a 10% pro-rata share. Its base year shows $400,000 of operating expenses, or $8.00 a square foot, but that year ran at only 60% occupancy. Grossed up to 95% occupancy, the base year is really $505,000 — and the difference between the two base years is worth $10,500 a year to this one tenant. By Túy “Dewey” Luong, CCIM — Founding Broker, SERHANT. Atlanta · 318 closed sales / $281.2M career volume · 678-707-2498 · dewey.luong@serhant.com · https://deweyluong.realtor

The worked example uses made-up, rounded numbers throughout, including the building and the expense figures. Real expense language varies lease by lease and is enforced on its exact words. This page is general education only, not legal or tax advice — have your attorney review a live clause before signing, and your CPA review how pass-throughs are treated.

Three ways the line gets set: base year, expense stop, stipulated amount

• The base year: the tenant's rent includes operating expenses as they stood in a stated calendar year — usually the year the lease starts, or the first full year after it. In later years the tenant pays its pro-rata share of the increase over that base. A base year set in a half-empty, low-cost year is a low line, and every normal expense after it looks like an "increase" the tenant funds.
• The stated expense stop: instead of a year, the lease states a number — say $8.50 a square foot. The landlord absorbs expenses up to the stop; the tenant pays its share of the excess over it. A stop is simpler to audit than a base year, but it never moves unless the lease escalates it, so a stop set below the building's real cost hands the tenant a bill from day one.
• The stipulated amount: the parties simply agree a fixed expense figure is baked into the rent, whatever the building actually spent. It trades accuracy for certainty: no base-year audit fight, but no protection either if the stipulated figure was guessed low.
• What the tenant actually pays: in all three forms, the mechanics are the same — later-year expenses minus the line, times the tenant's pro-rata share. The share is the tenant's square footage divided by the building's: 5,000 divided by 50,000 is 10% in the worked example.
• Why year one feels free: in the base year itself there is no excess, so no pass-through bill arrives. The first reconciliation, a year or more in, is when a bad base year shows up — long after the tenant could still negotiate it.

What counts in the expense pool — and what tenants negotiate out

• Standard inclusions: real estate taxes, building insurance, and common-area maintenance — landscaping, parking-lot sweeping and lighting, janitorial for common areas, repairs, snow and trash service, management, and utilities the landlord supplies. These are the operating expenses a CAM reconciliation later itemizes.
• Capital items: a new roof or a replaced HVAC system is a capital cost, not a yearly expense. Tenants negotiate that capital items enter the pool, if at all, only amortized over their useful life — a roof spread over 15 or 20 years, not dumped into one year's reconciliation.
• Leasing costs: leasing commissions and tenant-improvement costs belong to the landlord's deal with the next tenant, not to this tenant's expense pool. A well-drafted exclusions list names them, along with the landlord's legal fees for other tenants' leases and any cost reimbursed by insurance or another tenant.
• The management fee cap: management is a real service, but the fee is negotiable — tenants commonly cap it at a stated percentage of collected rent or of total expenses, and exclude fees paid to landlord affiliates above market. An uncapped fee grows automatically every time expenses grow.
• The exclusions list is the clause: whatever the lease does not exclude, the landlord's accountant can include. Tenants who sign the landlord's form pool definition discover its breadth at the first reconciliation; tenants who attach an exclusions exhibit decided the question at signing.

The worked example: a made-up 50,000 SF building, a 5,000 SF tenant, and two base years

• The setup: a made-up Georgia building of 50,000 SF; the tenant leases 5,000 SF, a 10% pro-rata share. In the base year, building operating expenses total $400,000 — $8.00 a square foot. The fixed portion — taxes, insurance, and contracts that run whether the building is full or empty — is $220,000. The variable portion — janitorial, utilities, and services that scale with occupancy — is $180,000. And the building was only 60% occupied that year.
• The gross-up: variable expenses in a 60%-occupied building understate a full building's cost, so leases gross them up to a stated occupancy. Gross the $180,000 variable portion up from 60% to 95%: $180,000 times 95 divided by 60 is $285,000. Add the $220,000 fixed portion and the grossed-up base year is $505,000 — the honest line.
• Year two, with the gross-up: at 95% occupancy, actual year-two operating expenses are $520,000. The excess over the grossed-up base is $520,000 minus $505,000: $15,000 for the whole building. The tenant's 10% share is $1,500 a year — a fair bill for a real increase.
• Year two, without the gross-up: measure the same $520,000 against the raw $400,000 base and the "excess" is $120,000. The tenant's 10% share is $12,000 a year. Nothing about the building changed — only the line did. The missing gross-up costs this tenant $12,000 minus $1,500, or $10,500 a year, and $52,500 over five remaining years if the gap simply holds.
• The separate expense-stop illustration: give the same tenant a stated stop instead of a base year. A stop of $8.50 a square foot against actual expenses of $10.40 a square foot leaves an excess of $1.90 a square foot. On the tenant's 5,000 SF, that is $9,500 a year — which is why a stop must be checked against the building's real expenses before it is accepted as "standard."

Gross-up, caps, and audit rights: the three protections around the line

• Why the base year is the fight: every later bill is measured from it, so a landlord who sets the base in a low-occupancy or low-cost year has effectively raised the rent without touching the rent number. Gross-up language — variable expenses restated as if the building were 95% to 100% occupied — is the tenant's correction, and it only works if the lease requires it for the base year and for every comparison year.
• Controllable-expense caps: a cap limits how much the controllable part of the pool — the costs management actually controls, unlike taxes and insurance — can grow each year, commonly 3% to 5%, cumulative or non-cumulative. A cap does not stop a real increase; it slows an unexplained one.
• Audit rights and the reconciliation deadline: the landlord sends an annual reconciliation statement; the tenant's right to inspect the books behind it is only real inside the window the lease gives — often 30 to 90 days to object, and a defined period to audit before the statement is deemed final. Miss the deadline and a wrong bill becomes an owed bill. Calendar the deadline the day the statement arrives, the same discipline a due diligence deadline demands.

What to negotiate at signing, before the first reconciliation arrives

1. Take the newest, fullest base year available. Use the first full calendar year after the lease starts, or a year the building ran near full occupancy — never a partial year or a lease-up year if it can be avoided. If the base year is already past, ask for the actual expense statements and audit them before signing, not after.
2. Write the gross-up in, at 95% to 100%. State the percentage, state that it applies to variable expenses in the base year and in every later year, and state who performs it. In the worked example that one sentence is worth $10,500 a year.
3. Attach the exclusions list. Capital items excluded or amortized only, no leasing commissions, no tenant-improvement costs, no other tenants' legal or default costs, and a cap on the management fee. If it is not on the list, assume it is in the pool.
4. Cap the controllable expenses. A yearly cap on controllable costs, stated as cumulative so one quiet year is not lost, keeps the pass-through tied to the building's real cost pattern instead of its manager's discretion.
5. Protect the audit window. A long objection period, a real right to inspect invoices and contracts — not just summaries — and language that the deadline does not run until complete records are delivered. Price the whole package the way an effective rent calculation prices a lease: the base year, stop, exclusions, cap, and audit right are rent, paid later.

For owners: what the base year does to value

Expense structure is value structure. A building whose leases carry low, ungrossed base years collects pass-through income a buyer will underwrite — until the buyer's counsel reads the clauses and finds gross-up obligations, caps, and exclusions that shrink it. Clean, consistently drafted expense language across the rent roll makes the recovery income in a buyer's model believable; a patchwork of stops and stale base years makes it a discount. Owners who set a fair, fully grossed-up base year at signing trade a small early bill for leases that survive a buyer's — and a tenant's auditor's — reading, which is the same trade a clean NNN lease structure makes from the other side.

Cho nhà đầu tư và chủ doanh nghiệp người Việt

Năm cơ sở (base year) là năm mà chi phí vận hành của tòa nhà được dùng làm mốc: tiền thuê của người thuê đã bao gồm chi phí ở mức của năm đó, và từ năm sau người thuê chỉ trả phần chi phí tăng thêm, theo tỷ lệ diện tích của mình. Expense stop là một con số cố định tính theo foot vuông thay cho năm cơ sở, còn stipulated amount là số tiền chi phí hai bên thỏa thuận sẵn trong hợp đồng. Điểm quan trọng nhất là gross-up: nếu năm cơ sở tòa nhà chỉ có người thuê ở mức 60%, các chi phí biến đổi như vệ sinh và điện nước sẽ thấp bất thường, và hợp đồng cần quy định tính lại các chi phí đó như khi tòa nhà đạt 95% công suất. Trong ví dụ minh họa của trang này, tòa nhà 50.000 SF có chi phí năm cơ sở $400.000 ($8,00/SF), gồm $220.000 chi phí cố định và $180.000 chi phí biến đổi; sau gross-up, năm cơ sở đúng là $505.000.

Bài học cho chủ doanh nghiệp người Việt: khi ký hợp đồng, hãy chọn năm cơ sở mới nhất và đầy đủ nhất, yêu cầu gross-up lên 95–100%, đính kèm danh sách chi phí bị loại trừ (hạng mục vốn phải khấu hao, hoa hồng môi giới thuê, chi phí cải tạo cho người thuê khác), đặt trần cho chi phí quản lý và chi phí kiểm soát được, và giữ quyền kiểm toán sổ sách trong thời hạn hợp đồng cho phép. Trong ví dụ này, thiếu điều khoản gross-up khiến người thuê 5.000 SF phải trả thêm $10.500 mỗi năm — $52.500 trong năm năm. Đây là thông tin giáo dục chung, không phải tư vấn pháp lý hay thuế; hãy nhờ luật sư và CPA xem hợp đồng trước khi ký.

Frequently asked questions

What is the difference between a base year and an expense stop?

A base year sets the line from history: the building's actual operating expenses in a stated year are included in the rent, and the tenant later pays its pro-rata share of increases above that year. An expense stop sets the line as a number: the landlord absorbs expenses up to a stated amount per square foot, and the tenant pays its share of the excess. In the separate illustration on this page, a stop of $8.50 a square foot against actual expenses of $10.40 leaves a $1.90 excess, which on 5,000 SF is $9,500 a year.

What does grossing up a base year mean, and why does it matter?

Grossing up restates the variable expenses of a partly occupied building as if it were occupied at a stated level — 95% in the worked example. The base year ran at 60% occupancy, so its $180,000 of variable expenses gross up to $285,000, and the base year rises from $400,000 to $505,000. Without that correction, year two's $520,000 of actual expenses produces a $120,000 "excess" and a $12,000 bill for a 10% tenant, instead of a $15,000 excess and a $1,500 bill.

Which expenses can a tenant negotiate out of the pool?

The standard targets are capital items (excluded, or included only amortized over useful life), leasing commissions, tenant-improvement costs for other tenants, the landlord's legal costs on other leases, costs reimbursed by insurance or other tenants, and an uncapped management fee. Taxes, insurance, and ordinary common-area costs normally stay in. Whatever the lease does not exclude, the landlord's accountant can include — which is why the exclusions list is negotiated as an exhibit at signing, not argued at the first reconciliation.

How long does a tenant have to challenge a reconciliation?

Only as long as the lease says — commonly 30 to 90 days after the landlord delivers the reconciliation statement to object, with a defined audit period to inspect the underlying invoices and contracts. If the tenant does not object inside that window, most leases deem the statement final and correct, even if it is not. The protection is procedural: calendar the deadline on delivery, request complete records immediately, and put the objection in writing before the window closes.

Năm cơ sở (base year) và gross-up là gì, và chủ doanh nghiệp người Việt cần nhớ điều gì nhất khi ký hợp đồng thuê ở Georgia?

Năm cơ sở là năm chi phí vận hành thực tế của tòa nhà được dùng làm mốc trong tiền thuê; từ năm sau, người thuê trả phần chi phí vượt mốc theo tỷ lệ diện tích của mình — 10% trong ví dụ của trang này, với mặt bằng 5.000 SF trong tòa nhà 50.000 SF. Gross-up là điều khoản tính lại chi phí biến đổi của năm cơ sở như khi tòa nhà đạt 95% công suất, vì năm cơ sở ở mức 60% sẽ cho mốc thấp giả tạo: $400.000 thành $505.000 sau khi gross-up. Điều cần nhớ nhất là thương lượng ngay khi ký: năm cơ sở mới và đầy nhất, gross-up 95–100%, danh sách chi phí loại trừ, trần chi phí kiểm soát được, và thời hạn kiểm toán sổ sách — thiếu gross-up tốn thêm $10.500/năm trong ví dụ này. Đây là thông tin giáo dục chung, không phải tư vấn pháp lý.