The Illiquidity Risk of SIPP Property

Liquidity refers to how quickly and cheaply an asset can be converted into cash without affecting its market price. Equities are highly liquid — a listed share can be sold in seconds at the prevailing market price. Commercial property is illiquid — a typical sale takes three to six months, involves significant transaction costs (typically 3–5% of value in total fees), and may require price concessions to attract buyers in a soft market.

Inside a SIPP, illiquidity creates a specific risk: the pension cannot respond quickly to changing circumstances. If you need to increase drawdown income, meet an unexpected financial need, or rebalance your portfolio in response to a market event, a property cannot be partially sold. You face a binary choice: hold the asset or sell it entirely. This rigidity requires careful planning, particularly as the pension holder approaches and enters retirement.

The most immediate form of property illiquidity risk is the void period — a gap between tenants when no rental income is received but the SIPP continues to bear costs: mortgage interest, service charges, insurance, and business rates (if applicable). For a SIPP with limited liquid reserves, a void of 6–12 months can create serious cash flow pressure, potentially requiring the pension to sell other assets to service the mortgage.

Void risk is highest when leases are short, when the property is in a weak letting market, or when the property type has limited appeal to multiple tenants. Industrial multi-let estates in strong locations typically re-let quickly; specialist office buildings in declining markets may take 12–24 months to find a new occupant. Prospective SIPP investors should model void scenarios before committing — a property that looks attractive at 7% yield becomes much less so if 12-month voids are a realistic expectation every 5 years.

An investor in equities who needs cash can sell at the prevailing market price, even if that price is temporarily depressed. A SIPP property investor who needs cash in a downturn faces a double problem: commercial property values have fallen, AND the time and cost to sell means the actual realised price may be well below even the depressed market value. This is the forced sale problem, and it is the most serious form of property illiquidity risk.

The risk materialises most acutely when a pension holder has over-committed to property, leaving insufficient liquid assets to fund drawdown without a property sale. We have seen cases where a SIPP holder in their late 60s needs income but is reluctant to sell the property (in a soft market) at a significant discount to its estimated value — creating both financial and emotional stress. The solution, designed in advance, is to ensure the SIPP always maintains liquid assets sufficient to cover several years of net costs and drawdown requirements.

Illiquidity risk is not a reason to avoid SIPP property — it is a reason to structure the investment thoughtfully. We recommend several practical mitigations. First, maintain a cash buffer within the SIPP of at least 6–12 months' net costs (mortgage, insurance, maintenance) plus planned drawdown requirements. This buffer provides time to manage a void or a slow sale without financial distress.

Second, choose properties on long leases to strong tenants. A 10-year lease to a national covenant business dramatically reduces void risk and provides a predictable income stream for retirement planning. The lower yield of a prime-tenanted long-let asset is often worth accepting in exchange for income certainty. Third, hold liquid assets (equities or cash) alongside the property to provide a source of income and rebalancing capacity without needing to sell the property. A portfolio approach, explored in our article on SIPP diversification, is more resilient than a single-asset pension.

If you find yourself in a SIPP with insufficient liquidity, several options exist short of a full property sale. Refinancing the property (if there is equity above the existing mortgage) can release cash into the SIPP without triggering a sale. The SIPP can also borrow from a third-party lender against its assets in limited circumstances. Making new contributions (if the annual allowance permits) adds liquid capital to the SIPP. And if the pension holder has other assets outside the SIPP, drawdown planning can use those assets first to allow the SIPP property time to transact in an orderly manner.

In extremis, a sale at a modest discount may be preferable to a prolonged hold during financial distress. We can introduce you to commercial property agents and lenders who can advise on the most appropriate course of action for your specific circumstances. For a broader perspective on managing property in difficult market conditions, see our article on SIPP property in a falling market. Contact us if you would like to discuss your situation.