What Are Commercial Office Loans & How to Finance One

What Makes Office Building Finance Different

Commercial property finance for an office building works differently to a residential home loan because lenders assess the income the property generates, not just your personal income. The deposit required is typically 30% to 40% of the purchase price, and interest rates sit higher than residential rates, usually by 1% to 2%. Loan terms commonly range from three to five years, even if the loan is amortised over 15 to 25 years, which means you'll face refinancing sooner than you would with a standard home loan.

The property itself becomes the primary security, but lenders also look closely at the lease agreements in place, the quality of tenants, and whether the building is owner-occupied or investment-focused. If you're planning to run your own business from the office, lenders will want to see your business cashflow alongside the property's valuation. If it's an investment, they'll assess the rental income and how long the current commercial lease has left to run.

Why Lenders Focus on Rental Income and Lease Terms

Lenders approve commercial property loans based on the property's ability to service the debt, which means rental income plays a central role. A long-term tenant on a five-year lease with regular income provides far more certainty than a building with short-term leases or a commercial vacancy. Most lenders will apply a rental serviceability buffer, often discounting the income by 20% to 30% to account for potential vacancies or tenant turnover.

Consider a scenario where you're purchasing a strata commercial office in Liverpool with two tenants on three-year leases generating $85,000 annually. The lender might assess serviceability using $60,000 to $68,000 instead of the full amount, depending on the lease structure and tenant credit profile. If one tenant is a government department or large corporate entity, the lender may apply a smaller discount compared to a single small business tenant with limited trading history.

Your commercial loans application will need to include copies of the current lease agreements, tenant payment history if available, and evidence of any rent reviews built into the lease. If the building has a commercial vacancy or the lease expires within 12 months of settlement, expect the lender to either reduce the loan amount or require a larger deposit to offset the risk.

Deposit and Equity Requirements for Office Property

Most lenders require a minimum 30% deposit for a commercial property purchase, though some may lend up to 70% LVR if the property is in a strong location with quality tenants. Owner-occupied commercial purchases occasionally attract slightly higher LVR options, particularly if your business has solid cashflow and the property is zoned for your intended business use. If you're refinancing or already own commercial equity in another property, you may be able to use that equity to cover part of the deposit.

Expect to budget separately for commercial stamp duty, which in NSW is calculated on the full purchase price without the concessions available to residential owner-occupiers. A $1.2 million office purchase would attract roughly $55,000 in stamp duty, plus legal fees, valuation costs, and any GST implications if the property is sold as a going concern. These upfront costs can add 8% to 12% on top of your deposit, so planning for the full settlement amount is critical.

How Commercial Interest Rates Are Calculated

Commercial interest rates are typically structured as a margin over a benchmark rate, which means the rate you pay reflects both the lender's cost of funds and the perceived risk of your loan. Variable interest rates for commercial property loans currently sit between 5.5% and 7.5%, depending on your LVR, loan amount, and whether the property is owner-occupied or investment. Fixed interest rates are available for terms of one to five years, though they tend to be priced higher than residential fixed rates and offer less flexibility around early repayment.

Interest rate discounts are usually negotiated at the time of application and depend on your relationship with the lender, the loan size, and the strength of the security. A $2 million loan secured against a well-tenanted office building in a commercial precinct like Parramatta or North Sydney will generally attract a sharper rate than a smaller loan on a regional strata office with uncertain tenant history.

Some lenders offer redraw facilities and flexible repayment options, but these features are less common in commercial lending than residential. If you need the ability to make extra repayments or draw down funds later, make sure the loan structure supports it before you commit. Many commercial property loans are structured as interest-only for the first few years to improve cashflow, particularly for investment properties where rental income is used to service the loan.

Structuring the Loan for Business Use or Investment

How you structure the loan depends on whether you're buying the office for your own business premises or as a commercial investment. Owner-occupied commercial property allows your business to build equity instead of paying rent, and the interest on the loan is usually tax-deductible as a business expense. Lenders will assess your business financials, including profit and loss statements, tax returns, and projected cashflow, to confirm your ability to service the loan alongside other business commitments.

If you're purchasing as an investment to build a commercial portfolio, the lender will rely more heavily on the rental income and the lease structure. You'll still need to demonstrate personal or business income to cover any shortfall if the property sits vacant, but the loan serviceability calculation will be weighted toward the tenant's ability to pay rent. Some lenders allow you to use projected rental income if the building is currently vacant, provided you can show a signed lease or strong evidence of tenant demand in that location.

Consider an example where you're expanding your business property holdings by purchasing a two-level office in Edmondson Park. The building is zoned for commercial use with an approved DA, and you plan to occupy the ground floor while leasing the upper level to another business. The lender will assess the rental income from the tenanted portion and your business cashflow to determine how much you can borrow. Splitting the loan structure between owner-occupied and investment portions may also provide different rate and LVR options, depending on the lender's policy.

What Happens During the Commercial Property Valuation

Every commercial property loan requires an independent valuation, which the lender uses to confirm the property's market value and its income-generating potential. The valuer will inspect the building, review the lease agreements, and compare recent sales of similar office properties in the area. The final valuation figure determines the maximum loan amount the lender will approve, which is why the purchase price and the valuation don't always align.

If the valuation comes in lower than the purchase price, you'll need to either renegotiate with the seller, increase your deposit, or walk away from the deal. This happens more often with commercial property than residential because office buildings are valued based on income yield and comparable sales, both of which can vary significantly depending on tenant quality and local demand. A building with a strong tenant on a long lease in a high-demand precinct will generally value higher than a similar building with short-term tenants or a commercial vacancy.

The commercial property valuation also considers zoning, DA approvals, and any restrictions on business use. If you're buying an office that was previously residential or has limited commercial zoning, the valuation may reflect that constraint, which in turn affects your borrowing capacity.

Accessing Commercial Property Loan Options Across Lenders

Not all lenders offer the same commercial property loan options, and the differences between banks and specialist lenders can be significant. Major banks tend to prefer well-located office buildings with strong tenant covenants and low LVR, while non-bank lenders may be more flexible around loan structure, shorter lease terms, or properties with alternative business use. Working with a broker who can access commercial property loan options from banks and lenders across Australia gives you a wider view of what's available and where the pricing sits.

Some lenders will only write loans above a certain loan amount, often $500,000 or $1 million, while others specialise in smaller strata commercial purchases or owner-occupied business premises. If you're looking to refinance an existing commercial property loan to access equity or secure a lower rate, the same valuation and serviceability process applies, but you may have more negotiating room if the property has increased in value or your tenant profile has improved.

Your loan structure should reflect how you plan to use the property and how long you intend to hold it. If this is the first step in building a portfolio, you'll want a structure that allows you to leverage equity for future purchases without triggering break costs or refinancing penalties. If it's a long-term hold for your own business, you might prioritise loan term stability and repayment flexibility over rate alone.

Call one of our team or book an appointment at a time that works for you to discuss how business loans and commercial finance options can be structured around your property purchase and long-term plans.

Frequently Asked Questions