Grade A vs Grade B Office: Comparing Total Cost (Rent + Operations + Fit-Out) for Small and Mid-Sized Companies

Most small and mid-sized companies evaluating office space compare only the headline rent in USD/m² before choosing between a Grade A or Grade B building, driven largely by brand image. That comparison skips at least three variables: the service charge, the space efficiency ratio, and the fit-out budget, which differs significantly by building grade. Together these variables can change the conclusion entirely. This article builds a Total Cost of Ownership (TCO) framework for leased office space, using Q2 2026 market data for Hanoi and Ho Chi Minh City, with a worked example for a 50-person company, to answer whether a Grade A or Grade B building makes more sense at a given company size and growth stage.

Four Variables Behind the Real Cost of an Office

The listed rent in USD/m²/month is only one of four cost components a company must add up when comparing a Grade A versus Grade B lease. The other three are: the service charge, billed separately from rent; the space efficiency ratio, which determines how much gross area is actually needed to seat a given headcount; and the fit-out budget, which varies meaningfully between Grade A and Grade B buildings depending on how much of the mechanical and electrical (M&E) infrastructure is already in place. Skipping any of these four variables produces a distorted comparison, since a lower Grade B rent can be partly or fully offset by a larger gross area requirement and a higher fit-out cost per square meter.

Rent and Service Charges: How Far Apart Are Grade A and Grade B

According to Q2 2026 market data, average Grade A rent in Hanoi runs around USD 32.2/m²/month versus roughly USD 21.4/m²/month for Grade B — close to a 50% gap. In Ho Chi Minh City the gap is wider: about USD 53.2/m²/month for Grade A against USD 33.3/m²/month for Grade B. On top of rent, most Grade A and Grade B buildings in Vietnam charge a separate service fee, typically USD 5-8/m²/month for Grade A and USD 3-5/m²/month for Grade B, before VAT and per-vehicle parking charges. Combined, the cost gap per square meter between the two grades runs 35-40% depending on the city — the figure that pushes most companies toward Grade B at the first stage of comparison, before the other two variables are factored in.

Space Efficiency Ratio — The Variable Most Comparisons Skip

The efficiency ratio (usable area ÷ gross area × 100%) differs noticeably between the two grades. Grade A buildings, with centralized building cores and optimized elevator layouts, typically achieve 78-85% efficiency. Grade B buildings, often with denser structural columns or a less optimized core, typically land at 65-75%. The direct consequence: for the same usable area requirement, a company must lease a meaningfully larger gross area in a Grade B building to seat the same headcount — and that extra gross area raises rent, service charges, and the fit-out budget together, eroding part of Grade B's lower headline rent.

Fit-Out Budget by Building Grade

Per Cushman & Wakefield's Asia Pacific fit-out cost research, Hanoi and Ho Chi Minh City rank among the region's lowest-cost fit-out markets, though cost per square meter still differs by building grade. Grade A buildings usually come with finished ceiling systems, main electrical risers, and fire protection infrastructure built to a high standard, so fit-out work concentrates on interiors, partitions, and low-voltage cabling — a reference cost of around USD 550/m² gross for a standard specification. Grade B buildings or converted spaces often require additional upgrades to base M&E infrastructure, pushing the reference cost to roughly USD 700-720/m² gross. Combined with the larger gross area required by a lower efficiency ratio, the absolute fit-out budget for Grade B can end up higher than Grade A despite the lower rent.

A Worked Example: Comparing TCO for a 50-Person Company in Hanoi

Step 1 — Convert Headcount Into Gross Area

Under a traditional seating model at roughly 5m² of usable area per person, a 50-person company needs about 250m² of usable space. At 80% efficiency for Grade A, the required gross area is about 313m². At 70% efficiency for Grade B, it rises to about 357m² — a 44m² gap even though actual space needs are identical. The full method for converting gross area, net area, and efficiency ratio is covered in our article on office area standards by headcount.

Step 2 — Calculate Monthly Rent and Operating Cost

Grade A: (32.2 + 7) USD/m² × 313m² ≈ USD 12,270/month. Grade B: (21.4 + 4) USD/m² × 357m² ≈ USD 9,068/month. The gap is about USD 3,202/month, roughly 35% — consistent with the headline rent gap cited above. City-by-city, quarter-by-quarter figures are tracked in our article on Grade A and Grade B office rent in Hanoi and Ho Chi Minh City 2026.

Step 3 — Amortize the Fit-Out Budget Over the Lease Term

On a 3-year lease (36 months), the Grade A fit-out budget is about 550 USD/m² × 313m² = USD 172,150, or roughly USD 4,782/month amortized. The Grade B fit-out budget is about 715 USD/m² × 357m² = USD 255,255, or roughly USD 7,090/month amortized — a gap of USD 2,308/month in Grade A's favor that offsets most of the rent gap calculated in Step 2.

The Result: a Much Smaller Real-World Gap

Adding all three components, total monthly cost for Grade A comes to about USD 17,052 (USD 341/person, roughly VND 8.66 million at a reference rate of VND 25,400/USD), against about USD 16,158 for Grade B (USD 323/person, roughly VND 8.21 million). The real gap narrows to about USD 18/person/month, or 5-6% — far smaller than the 35-40% gap visible when comparing rent alone. This is why the Grade A versus Grade B decision should never rest on the broker's rent sheet alone; all four variables above need to be run against the company's actual headcount and operating model.

Is your floor plan a different gross area than this example, and you're not sure how many seats it converts to? What would the fit-out budget actually run for that specific building grade? Send your CAD file or floor plan PDF to Enter Office — our technical team provides a free Test Fit layout and fit-out budget estimate within 48 hours, giving you accurate TCO numbers for the exact space you're considering instead of market averages.

Grade A or Grade B — Deciding by Company Size and Objective

When the per-person TCO gap between the two grades narrows to 5-6% as in the example above, the decision should hinge on operating priorities rather than rent alone. Grade A fits companies that need an address for hosting large enterprise clients, foreign-invested subsidiaries required to meet ESG/LEED criteria for a parent company's sustainability reporting, or businesses with a stable headcount for the next 3-5 years that can amortize the fit-out budget evenly without the risk of relocation costs midway through the lease. The green design and ESG criteria that apply to Grade A buildings are covered in our article on ESG-compliant green office design.

Grade B suits companies in a fast-growth phase, where headcount may shift 20-30% over the next 1-2 years, or an operating model that doesn't require frequent client visits to the office. For this group, Grade B's advantage isn't a meaningfully lower TCO per person — as the example shows, that gap is fairly small — it's that Grade B leases outside the core central districts tend to offer more flexible early-termination or expansion clauses, better suited to a company still uncertain about its long-term headcount.

Decide on the Numbers for Your Specific Floor Plan, Not Market Averages

The TCO example in this article uses Q2 2026 market averages and a 5m²/person benchmark for a traditional seating model — both figures shift with the specific building and the company's actual operating model, including desk-sharing ratios, meeting room count, and shared-space allocation. Before committing to a Grade A or Grade B lease, request the as-built CAD drawing for each shortlisted building to calculate the efficiency ratio and fit-out budget against that building's actual column grid and M&E risers, rather than applying market averages. Register for a free Test Fit layout and cost estimate to get complete numbers before putting down a deposit on any floor plan.