Commercial property expert Tom Donnelly outlines the five leasing mistakes agents should help clients avoid to build stronger, long-term relationships. Image: Supplied/Lois

As commercial agents, we know that securing the deal is only half the battle. The real test of our value comes two, three, or five years down the track, when a client looks back at the lease they signed and decides whether we built them a growth vehicle or backed them into a corner.

For many business owners, signing a commercial lease is one of the largest financial commitments they will ever make. Yet, it remains surprising how often occupiers make long term real estate decisions based purely on short term operational needs. When those leases inevitably hit friction points, it is rarely just a tenant problem. It becomes an agency retention problem.

If we want to transition from transactional brokers to indispensable strategic advisers, we need to actively guide our clients away from the five most common leasing mistakes before the ink ever hits the paper.

Letting clients lease for today, not tomorrow: The easiest commission is often the space that fits the current headcount and budget of a client perfectly. However, standard lease cycles run three to five years, and an occupier that outgrows their footprint in month eighteen becomes a frustrated client.

As agents, our job is to stress test their three year trajectory during the brief stage so if rapid growth is on the cards, we need to structure the deal accordingly by negotiating rights of first refusal on contiguous space, early expansion rights, or structured surrender clauses. Protecting their ability to scale keeps them in your ecosystem when they outgrow the footprint.

Allowing clients to focus solely on Face Rent: Clients frequently suffer from tunnel vision when it comes to face rent per square metre and if we let them evaluate properties based on top line rent alone, they run straight into unbudgeted operational expenditure friction later.

We add value by running a comprehensive Net Effective Rent analysis for them upfront. By breaking down outgoings allocations, fit out amortisation against incentive packages, make good liabilities, and parking levies, we ensure the client understands the total cost of occupancy. Transparent financial modelling eliminates post occupancy surprises and builds deep trust.

Glossing over contract mechanics: Commercial contracts operate under strict contract law, and non specialist tenant representatives or business owners routinely misinterpret lease mechanics.

We need to actively walk clients through the structural nuances that impact their future balance sheet, including market review mechanisms, ratchets, option exercise windows, and sub leasing or assignment flexibility.

Ensuring your tenant clearly understands their contractual obligations protects them from costly surprises and protects you from the fallout when an option window is missed.

Treating location as a ‘specification, not a strategy’: A site can tick every physical requirement on paper and still fail the underlying business strategy of a tenant.

Instead of just matching floorplates to a checklist, agents should challenge clients on location intelligence. Does the precinct support their talent acquisition strategy?

What does the local infrastructure pipeline look like over the next thirty six months? How does transport accessibility impact their logistics or customer walk ins? When we align physical assets with the broader business model of a client, we become strategic partners rather than simple space matchers.

Getting brought into the process too late: The biggest hurdle we face in commercial agency is being treated as a tactical tool, brought in only after a tenant has already fixated on a premises or backed themselves into a corner on lease terms.

Positioning our expertise earlier in the cycle requires proactive client education and by reaching out to portfolio clients twelve to eighteen months before lease expiry, we can help them evaluate the market, benchmark yields, and map out their requirements early.

Taking control of the timeline gives us maximum leverage during landlord negotiations and delivers demonstrably better deal terms.

Driving asset value through better advisory: A commercial lease should never be treated as a static transaction. When structured correctly, it acts as a flexible framework that supports enterprise growth and protects client liquidity.

By taking the lead on strategic planning and guiding our clients past these predictable pitfalls, we do not just close better deals today. We build high value, repeat commercial relationships for the life of our practice.