How to Finance an Office Building Purchase

A practical guide to commercial property finance for South Morang business owners buying their first office building or expanding their property portfolio.

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Buying an office building changes how your business pays for space, but the finance structure works differently than residential lending.

Most lenders assess commercial property loans based on the income the building generates, not just your business turnover. This means the rental yield, lease terms, and tenant profile become part of the lending decision. If you're planning to occupy the building yourself, lenders treat it differently again, looking more closely at your business financials and serviceability.

For South Morang business owners, this often means considering whether you'll occupy the entire building, lease part of it to another tenant, or purchase it purely as an investment. Each scenario affects how much you can borrow and what loan structure makes sense.

How Lenders Assess Your Office Building Purchase

Lenders typically advance between 60% and 70% of the property's value for commercial purchases, though this depends on the building's condition, location, and tenancy. A fully leased office building in South Morang with tenants on fixed-term agreements will usually qualify for higher borrowing than a vacant building you plan to fit out.

Consider a buyer purchasing a small office building near Harvest Home Road. The building has two tenancies: one occupied by a medical practice on a five-year lease, and another by an accounting firm with two years remaining. The lender valued the building at $850,000 and offered 65% LVR, requiring a $297,500 deposit plus around $35,000 for stamp duty and legal costs. Because one tenant had only two years left on their lease, the lender factored in the risk of vacancy when setting the loan amount and applied a slightly higher interest rate than they would for a building with longer lease terms across both tenancies.

Your business financials still matter, particularly if you're occupying the building. Lenders want to see at least two years of tax returns, profit and loss statements, and a business plan showing how the purchase supports your operations. If your business has been trading for less than two years, you may need a larger deposit or a guarantor to proceed.

Owner-Occupied vs Investment Office Buildings

If you're buying an office building to occupy yourself, the loan works more like business finance than investment property lending. Lenders assess whether your business generates enough income to service the loan repayments, and they'll usually require personal guarantees from directors or business owners.

The advantage of owner-occupation is that your loan repayments replace rent, and you're building equity rather than paying a landlord. The challenge is that lenders don't have rental income to fall back on, so they scrutinise your business cash flow more closely. You may also need to demonstrate that the location supports your business operations, which is straightforward in areas like South Morang where sectors like health services, trades, and professional services have grown alongside the residential expansion in the northern growth corridor.

If you're purchasing the building as an investment, lenders focus on the rental income. They'll typically lend based on a percentage of the rental yield, often around 70% to 80% of the annual rent. A building with strong tenants on long leases will qualify for higher borrowing and lower interest rates than one with short-term or month-to-month arrangements.

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Book a chat with a Mortgage Broker at Loanfolio today.

Fixed or Variable Interest Rates for Office Building Loans

Commercial interest rates sit higher than residential rates, usually between 1% and 2% above standard home loan rates. You can choose between variable and fixed rates, though fixed terms are typically shorter than residential loans, often capped at three to five years.

Variable rates give you flexibility to make extra repayments or refinance without break costs, which matters if your business grows faster than expected or if you want to access equity for expansion. Fixed rates lock in your repayments, which helps with budgeting and cash flow planning, but they come with restrictions on early repayment and refinancing.

Some buyers split their loan between fixed and variable, fixing a portion to manage repayment certainty while keeping the rest variable for flexibility. The right structure depends on whether stable repayments or the ability to pay down the loan faster matters more to your business.

Loan Structure and Repayment Options

Most commercial property loans are structured as principal and interest, though interest-only periods of one to five years are common, particularly for investment purchases. Interest-only repayments reduce your monthly outgoings during the early years, which can help if you're managing fit-out costs or building your tenant base.

Flexible repayment options matter if your business has seasonal income or irregular cash flow. Some lenders offer redraw facilities or offset accounts, though these features are less common in commercial lending than residential loans. If you need access to funds after making extra repayments, confirm whether the loan structure includes redraw before you settle.

For buyers planning significant fit-out or renovation work, a progressive drawdown structure may work better than a single lump sum. This allows you to draw funds as the work progresses, so you're only paying interest on the amount you've used rather than the full loan from day one.

What You'll Need to Apply

Lenders require more documentation for commercial property finance than residential purchases. Expect to provide at least two years of business tax returns, recent profit and loss statements, a balance sheet, and details of any existing business debts. If the building is tenanted, you'll need copies of the lease agreements, tenant financials if available, and evidence of rental income.

The property valuation carries more weight in commercial lending. Lenders will arrange their own valuation, and the outcome determines how much they'll lend. If the valuation comes in lower than the purchase price, you'll need to cover the difference with a larger deposit or renegotiate the sale price.

You'll also need to show how you've accumulated your deposit. Lenders want to see genuine savings or equity from another property, not borrowed funds. If you're using equity from a residential property to fund the deposit, that property will likely be used as additional security for the commercial loan.

Pre-Settlement Finance and Bridging Options

If you're selling an existing property to fund the office building purchase, timing the settlement dates doesn't always align. Commercial bridging finance covers the gap between contracts, letting you settle on the new building before your sale completes.

Bridging loans are short-term, usually up to 12 months, and carry higher interest rates than standard commercial loans. They're secured against both the property you're selling and the one you're buying, so lenders assess both assets when deciding how much to lend. Once your sale settles, the bridging loan is repaid and replaced with a standard commercial property loan.

Pre-settlement finance works similarly but is often used when you need to secure the property quickly, particularly in situations where the vendor wants a fast settlement or you're competing with other buyers. The short-term loan gets you to settlement, then converts to a longer-term commercial mortgage once your funding is finalised.

Working with a Broker for Commercial Property Finance

Commercial lending varies significantly between lenders, and not every bank offers the same loan structures or appetite for different property types. A broker who works across multiple lenders can access options you wouldn't find by approaching your bank directly, particularly if your business has a complex structure or the building has unusual characteristics like mixed-use zoning or short lease terms.

Brokers also handle the documentation and liaise with lenders throughout the assessment process, which matters when you're trying to run a business and manage a property purchase simultaneously. For South Morang buyers, working with a local broker who understands the commercial property market in the northern growth corridor can speed up the process and help you avoid lenders who are less familiar with the area.

If you're ready to explore your options or want to understand how much you can borrow before you start looking at properties, call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions

How much deposit do I need to buy an office building?

Most lenders require a deposit of 30% to 40% of the property's value for commercial purchases, meaning they'll lend up to 60% or 70% LVR. You'll also need to cover stamp duty, legal fees, and valuation costs separately, which can add another 4% to 5% to your upfront costs.

Can I use my home as security for a commercial property loan?

Yes, many buyers use equity in their residential property as additional security to reduce the deposit required or increase their borrowing capacity. The lender will assess both properties and may require a mortgage over your home as part of the loan structure.

What's the difference between owner-occupied and investment office building loans?

Owner-occupied loans are assessed based on your business income and ability to service the debt, while investment loans focus on the rental income the building generates. Owner-occupied loans often require personal guarantees, while investment loans rely more heavily on tenant lease terms and rental yield.

How long does it take to get approval for a commercial property loan?

Commercial loan approvals typically take two to four weeks, depending on the complexity of your business structure and the property itself. Lenders need time to assess financials, arrange a valuation, and review lease documents if the building is tenanted.

Can I refinance a commercial property loan?

Yes, commercial refinancing is common when your business circumstances change, when you want to access equity, or when you're switching from a fixed to variable rate. Break costs may apply if you're exiting a fixed rate early, so it's worth reviewing your loan terms before starting the process.


Ready to get started?

Book a chat with a Mortgage Broker at Loanfolio today.