The Pros and Cons of Buying an Office Building

Buying an office building as your first commercial investment operates differently from residential property in almost every aspect.

Lenders assess commercial property finance based on the income the building generates, not just your personal capacity. That changes how much you can borrow, what deposit you'll need, and how long the application takes. The property itself needs to demonstrate it can service the loan through rental income, which means the tenant, the lease terms, and the vacancy risk all become part of the lender's assessment.

Commercial Deposits Are Higher Than Residential

Most lenders require a minimum 30% deposit for commercial property purchases, though some will consider 20% depending on the property type and tenant strength. A strata office in a well-located Melbourne suburb with a long-term tenant on a secure lease will be viewed more favourably than a standalone building with short-term arrangements or vacancy.

Consider a buyer looking at a strata office in Glen Waverley with an established tenant on a five-year lease. At a 30% deposit, they'd need to provide that upfront from savings, existing property equity, or a combination of both. Lenders won't accept gifted deposits for commercial property loans the way some do for residential, and the equity position you hold becomes a buffer against vacancy or tenant default. Stamp duty on commercial property also sits higher than residential in most states, so factor that into your upfront costs alongside legal fees and valuation.

The higher deposit reflects the lender's view of risk. Commercial tenants can vacate with more impact than a residential tenant, and the pool of potential replacement tenants is smaller. Your equity cushion protects the lender if the building sits empty while you search for a new occupant.

Rental Income Drives Your Borrowing Capacity

Commercial lenders assess the loan amount based on the property's ability to generate income, not your salary. They'll calculate a debt service coverage ratio, which compares the net rental income to the loan repayments. Most lenders want to see the rental income cover at least 1.2 to 1.4 times the annual loan repayments, meaning the property needs to earn 20% to 40% more than the loan costs each year.

If the office building generates $50,000 in annual rent after outgoings, the lender will assess whether that income can comfortably service the proposed loan. Your personal income still matters, particularly if you're seeking owner-occupied commercial finance where your business will use the premises, but the property's cashflow takes priority. Buildings with strong tenants on long leases will support higher borrowing than those with short-term arrangements or vacancy.

This differs from investment loans on residential property, where your personal income and expenses determine how much you can borrow. In commercial finance, the lease becomes as important as the bricks.

Loan Terms Are Shorter and Structured Differently

Commercial property loans typically run for shorter terms than residential mortgages. While a residential loan might extend to 30 years, commercial loans often cap at 15 to 20 years, with many lenders preferring 10 to 15 year terms. The loan structure also differs. Interest-only periods are common, sometimes extending for the full loan term, because commercial investors often prioritise cashflow and tax efficiency over paying down principal.

Variable interest rates on commercial loans sit higher than residential, often starting from 1% to 2% above standard residential variable rates. Fixed rate options exist but are less common, and when they are offered, they usually apply for shorter periods—one to five years rather than the longer fixed terms available on residential lending. The application itself takes longer. Lenders need a full commercial valuation, detailed lease documentation, tenant financials in some cases, and a clear picture of outgoings and management costs. Expect the process to take four to six weeks from application to settlement, sometimes longer if the property has complexity around zoning, tenancy, or strata arrangements.

If you're considering releasing equity from residential property to fund the commercial deposit, that adds another layer. You'll need to coordinate two separate loan applications and ensure the equity release settles in time for the commercial purchase.

Owner-Occupied vs Investment Office Property

The way you intend to use the building changes the loan structure and sometimes the deposit. Owner-occupied commercial property, where your business operates from the premises, can attract slightly different lending terms. Some lenders view owner-occupied property as lower risk because you control occupancy, though others see it as higher risk because your business income and the property are tied together.

If you're buying an office building in Box Hill to run your business from, lenders will assess both your business financials and the property itself. They'll want to see your business can afford the loan repayments even if revenue dips, and they may ask for business financials, tax returns, and projections. Investment office property where you're purchasing purely for rental income removes your business from the equation but increases the focus on tenant quality and lease terms.

Strata office properties in commercial zones closer to Melbourne's eastern suburbs—Glen Waverley, Box Hill, Chadstone—tend to attract stronger tenant demand than standalone buildings in outer areas. That affects both the rental income you can achieve and how lenders view the security.

Tenant Strength and Lease Length Matter to Lenders

A commercial property with no tenant or a lease due to expire within 12 months will be harder to finance. Lenders want to see occupancy and ideally a lease with at least two to three years remaining. The tenant's financial position also matters. A national tenant or government department on a long lease will support stronger borrowing than a new small business on a short-term agreement.

In a scenario where you're purchasing a vacant office building with the intention to lease it after settlement, most lenders will either decline the application or lend at a significantly lower LVR—sometimes 50% to 60%—until a tenant is secured. Vacant commercial property is seen as development or opportunistic, and the finance reflects that. If you're buying with a tenant in place, the lender will want to see the lease deed, rental statements, and confirmation the tenant is meeting their obligations. Any arrears or disputes can delay or derail the application.

Commercial leases also pass more costs to the tenant than residential arrangements. Outgoings like council rates, insurance, and maintenance are often recoverable from the tenant, but you'll need to demonstrate how those costs are structured and whether the lease is gross or net. Lenders adjust the income figure based on what you're responsible for versus what the tenant covers.

GST and Tax Considerations Add Complexity

Commercial property transactions can involve GST depending on how the property is sold and whether the seller is registered for GST. If GST applies to the purchase, you'll need to factor that into your funding or structure the purchase as a going concern to avoid it. That's not a lender issue, but it does affect how much you need upfront and whether you can claim input tax credits if your business is registered.

Commercial property also offers different tax treatment compared to residential investment property. Depreciation on the building and fit-out can be claimed, and if you're using the property for your business, you can deduct interest, outgoings, and other expenses. The tax side sits outside the loan application, but it's worth understanding before you commit because it affects your net return. A conversation with your accountant before you start looking will clarify whether buying or leasing makes sense for your situation.

Refinancing Commercial Property Works Differently

Once you own the office building, refinancing to a lower rate or better terms is possible but not as fluid as residential refinancing. Commercial lenders reassess the property, the tenant, and the lease each time you refinance. If the tenant has changed, the lease has shortened, or the area has declined, you may not achieve the same LVR or rate you had originally.

Commercial property refinance applications require a new valuation, updated lease documentation, and financials. If the building has increased in value and the lease is strong, you may be able to access equity to fund further investment or business expansion. If the opposite is true, refinancing can be difficult. That's one reason many commercial investors build relationships with lenders who understand their portfolio and strategy rather than switching lenders frequently for marginal rate improvements.

Call one of our team or book an appointment at a time that works for you. We'll assess your deposit position, review the property and lease details, and structure a commercial loan application that reflects how the building will be used and what income it can support.

Frequently Asked Questions