Introduction
Completion is the final stage of buying a commercial property at auction. After contracts have been exchanged on auction day, there is normally a short period before ownership formally transfers to the buyer.
This guide explains how completion works and what buyers must do to ensure the transaction proceeds successfully.
Completion of Your Auction Commercial Property Purchase
One of the main advantages of buying commercial property at auction is the speed of the transaction compared with private treaty purchases.
Following the auction, the process moves quickly towards completion.
Unless otherwise specified in the special conditions of sale, completion usually takes place within:
20 to 28 working days after exchange of contracts
This timeframe is typically governed by the Common Auction Conditions, widely adopted across the UK commercial property market.
What happens before completion
During the period between exchange and completion, several steps must take place.
These normally include:
- Transfer of the remaining purchase funds
- Mortgage lender requirements (if applicable)
- Final legal checks and documentation
- Insurance arrangements (if not already in place)
- Searches or confirmations required by the lender
Your solicitor will coordinate the legal process and confirm the completion statement, which outlines all amounts payable.
Paying the balance of the purchase price
Before completion can occur, the buyer must transfer the remaining purchase funds to their solicitor in cleared funds.
This includes:
- Balance of purchase price
- SDLT (Stamp Duty Land Tax)
- Legal fees and disbursements
- VAT where applicable
- Any apportionments such as rent or service charges
Failure to provide funds on time can delay completion and create financial penalties.
Completion Day
On the completion date, ownership of the property legally transfers to the buyer.
Modern commercial transactions are usually completed electronically between solicitors rather than in person.
Once completion funds are received by the seller’s solicitor:
- The transfer deed is dated
- Ownership passes to the buyer
- Keys or access arrangements are released
- The buyer takes possession (subject to any tenancy arrangements)
At this point, the commercial property purchase is finalised.
Consequences of Failing to Complete
If the buyer fails to complete on the agreed date, serious consequences may follow.
These may include:
- Loss of deposit
- Interest charges on outstanding funds
- Seller’s legal costs
- Resale of the property
- Claims for financial losses suffered by the seller
If the property is later sold for a lower price, the original buyer may be liable for the difference.
This risk highlights the importance of having finance and legal arrangements fully prepared before auction day.
After Completion
Following completion, your solicitor will normally:
- Submit the SDLT return to HMRC
- Register ownership with HM Land Registry
- Finalise lender security documents (if applicable)
If the property is an investment, buyers may also need to:
- Notify tenants
- Arrange management services
- Set up utilities and insurance
Summary
Completion is the final step in the auction purchase process, transferring legal ownership from seller to buyer.
Because auction timelines are short and legally binding, preparation before bidding is essential to ensure funds are available and the transaction completes smoothly.