What Is Vacancy Rate? Meaning, Formula and Example

Every landlord knows the sinking feeling of a "To-Let" sign that stays up month after month. An empty flat or shop still costs money: the loan instalment, holding tax, guard salary, service charges and maintenance continue, while the rent does not come in. The vacancy rate is the simple number that tells you how much of your property, or how much of your potential rent, is sitting empty. It is one of the most useful measures for any landlord, whether you own one building in Mirpur, a row of shops in a Chattogram market or a portfolio of flats across Dhaka.

This glossary guide explains what vacancy rate means, the two main ways to calculate it, worked examples with real arithmetic, how it connects to rental income and yield, what a "good" vacancy rate looks like in practice, and how landlords in Bangladesh can reduce it. It is written in plain language for owners, building managers, market committees and anyone evaluating a rental property.

What Is Vacancy Rate? A Simple Definition

Vacancy rate is the percentage of rentable units, space or time in a property that is not occupied by paying tenants during a given period. In simple terms, it answers the question: "Out of everything I could be renting out, how much is empty?"

The opposite measure is the occupancy rate. If your vacancy rate is 10%, your occupancy rate is 90%. Both describe the same situation from different angles.

In Bangladesh, landlords often talk about this informally: "Two flats have been empty since Eid" or "The third-floor shop has been vacant for five months." Vacancy rate turns that informal sense into a number you can track, compare and improve.

Why Vacancy Rate Matters for Landlords

• It directly reduces income: every empty month is rent that cannot be recovered later.
• Fixed costs continue: service charges, guard and cleaner salaries, lift maintenance, holding tax and loan instalments do not stop when a unit is empty.
• It signals problems: a high vacancy rate can point to rent set above the market, poor condition, weak marketing, or problems with location or building management.
• It affects property value and investment decisions: buyers and lenders look at how consistently a property is let.
• It helps planning: knowing your typical vacancy lets you budget realistically instead of assuming 100% occupancy.

How to Calculate Vacancy Rate: The Formulas

There are two common approaches. Both are valid; they simply answer slightly different questions.

1. Physical (unit-based) vacancy rate

This measures how many units are empty at a particular moment or on average.

Physical vacancy rate = (Number of vacant units ÷ Total number of units) × 100

For commercial property, you can use area instead of units: (vacant square feet ÷ total rentable square feet) × 100.

2. Economic (income-based) vacancy rate

This measures how much potential rent was lost because of vacancy over a period, usually a year. It is more accurate when units have different rents or when vacancies last different lengths of time.

Economic vacancy rate = (Rent lost to vacancy ÷ Potential gross rent) × 100

Potential gross rent is the rent you would collect if every unit were let for the whole period at its asking rent.

Time-based vacancy for a single unit

For a single flat or shop, you can calculate vacancy in months: (months vacant ÷ 12) × 100. This is useful for a landlord with only one or two units.

Worked Examples

Example 1: Physical vacancy in a residential building

For example (illustrative): a building in Dhaka has 20 flats. On 1 July, 3 flats are empty.

Physical vacancy rate = (3 ÷ 20) × 100 = 0.15 × 100 = 15%. Occupancy rate = 100% − 15% = 85%.

Example 2: Economic vacancy over a year

For example (illustrative): the same owner wants to know how much income was lost over the year. The flats have different rents, and each vacancy lasted a different time.

Suppose the building's potential gross rent (all 20 flats let all year) is Tk 4,800,000, for example 20 flats at an average of Tk 20,000 × 12 months = Tk 4,800,000.

Economic vacancy rate = (158,000 ÷ 4,800,000) × 100 ≈ 0.0329 × 100 ≈ 3.3%.

Notice the difference: on 1 July, 15% of flats were empty, but over the whole year only about 3.3% of potential rent was lost, because most vacancies were short. Both numbers are useful. The first is a snapshot; the second measures the real financial impact.

Example 3: Shops in a market by area

For example (illustrative): a market has 12,000 sq ft of rentable shop space. Shops totalling 1,800 sq ft are vacant.

Vacancy rate by area = (1,800 ÷ 12,000) × 100 = 15%.

All figures above are invented to show the calculation. They do not describe any real building or area.

Vacancy Rate, Rental Income and Yield

Vacancy rate feeds directly into the numbers investors and owners care about. A realistic income estimate always subtracts vacancy (and collection losses) from potential rent:

From effective gross income you then subtract operating expenses to arrive at net operating income. Our glossary entry on net operating income for rental property explains that next step, and our guide on rental yield vs capital gain shows how vacancy affects the return on a property. This is general educational information, not investment advice.

Tracking Vacancy Month by Month

A single yearly figure is useful, but tracking vacancy every month shows patterns that a yearly number hides. You only need a simple log with four columns: month, number of units, vacant unit-months, and rent lost.

For example (illustrative): a 10-flat building where every flat rents for Tk 15,000 records the following in the first half of the year.

Over six months the building had 10 × 6 = 60 unit-months available, and 5 of them were empty, so the average vacancy was 5 ÷ 60 ≈ 8.3%. The rent lost was 5 × Tk 15,000 = Tk 75,000. Looking at the log, the owner can see that January was the weakest month and can plan to advertise earlier the following year.

Vacancy in Shops, Markets and Offices

Commercial vacancy behaves differently from residential vacancy. Shops and offices often take longer to let, because business tenants compare many options, negotiate harder, and may need time for fit-out. On the other hand, commercial leases usually run longer, so a let shop may stay occupied for years.

• Measure by area as well as by unit, because shops and offices vary greatly in size.
• Watch clusters: several empty shops on one floor of a market can discourage shoppers and make the remaining shops harder to let. Market owners should act early on clusters. See our guide on managing vacant shops.
• Account for rent-free fit-out periods: a shop that is let but in a rent-free period is occupied, yet not yet earning. Track this separately so your income figures stay accurate.

What Is a "Good" Vacancy Rate?

There is no official benchmark for vacancy rate in Bangladesh, and it varies with location, property type, rent level, season and the wider economy. Instead of comparing yourself to a number you heard somewhere, compare:

• Your own trend: is your vacancy rising or falling year on year?
• Similar buildings nearby: ask local agents and other landlords how long comparable units stay empty.
• Your budget assumption: if you assumed one month of vacancy per unit per year (about 8.3%, since 1 ÷ 12 ≈ 0.083) and your actual loss is lower, you are doing well.

Also remember that zero vacancy is not always a sign of success. If every unit lets instantly and tenants never leave, your rent may be below the market. A small, short vacancy between tenants is normal and gives you time for repairs and repainting.

Seasonal Patterns in Bangladesh

Vacancy in Bangladesh often follows local rhythms. Many residential moves happen at the start of the month and around the new year when school sessions begin. Eid holidays can slow viewings and moves, and some tenants shift after Eid. University admission seasons affect demand near campuses. Commercial space can be affected by business cycles and, for markets, by the performance of the market as a whole. Understanding these patterns helps you time notices, renovations and advertising.

How to Reduce Vacancy Rate

Before a unit becomes vacant

• Ask tenants for adequate notice before leaving, as set out in the agreement, and start advertising as soon as notice is given.
• Retain good tenants: respond quickly to repairs, keep the building clean and safe, and communicate respectfully. Keeping a reliable tenant is usually cheaper than finding a new one.
• Review rent increases carefully; a large increase can push out a good tenant and lead to months of vacancy that cost more than the increase gains.

When a unit is vacant

• Price realistically for the current market.
• Present the unit well: clean, freshly painted where needed, working fixtures, good photos.
• Advertise through several channels: To-Let signs, online portals, Facebook groups, local agents and word of mouth.
• Respond to enquiries quickly and keep track of every lead.
• Make viewings easy: a caretaker who can show the flat at convenient times.
• Screen tenants fairly but efficiently, so good applicants are not lost to delays.

For a full playbook, read our guide on how to reduce vacancy in rental property.

Common Mistakes With Vacancy Rate

• Only looking at a snapshot: counting empty units today without tracking lost rent over the year.
• Ignoring vacancy in budgets: assuming 12 months of rent from every unit, then struggling to pay loan instalments.
• Confusing vacancy with unpaid rent: an occupied unit where the tenant does not pay is a collection problem, not a vacancy, but both reduce income and should be tracked separately.
• Holding out for an unrealistic rent: three empty months often cost more than a slightly lower rent.
• Not recording move-in and move-out dates accurately, so you cannot calculate vacancy at all.

Related Terms

• Occupancy rate: the percentage of units or space that is let; 100% minus the vacancy rate.
• Potential gross rent: total rent if all units were let all the time at asking rent.
• Effective gross income: potential rent minus vacancy and collection losses.
• Rent roll: a list of all units, tenants and rents, used to see occupancy at a glance.
• Turnover: the rate at which tenants move out and are replaced.

Final Thoughts

Vacancy rate is a simple number with a big message. Calculate it both ways: physical vacancy to see how many units are empty now, and economic vacancy to see how much rent you actually lost. Track it every month, compare it with your own history and nearby buildings, and use it to guide pricing, maintenance and marketing decisions.

Tracking vacancy by hand across many units is tedious. In Bariwala ERP (বাড়িওয়ালা ERP), every building, floor and unit shows whether it is occupied or vacant, and the lead management feature helps you follow up enquiries for empty units, so you can see your vacancy position at a glance and act on it quickly.