Resell Off Plan Property Contract UK - How Contract Assignment Works

How investors can resell an off-plan property before completion

Reselling an off-plan property contract in the UK can be an alternative to completing the purchase and selling the finished property later. Instead of taking ownership of the property first, the original buyer may be able to transfer their contractual rights to another purchaser before completion.

This is commonly structured as an assignment of rights, although other arrangements such as a subsale or novation can also arise. The exact route depends on the original purchase contract and the circumstances of the transaction.

For England and Wales, an offer is generally not legally binding until contracts are exchanged. After exchange, the purchase is legally binding, so an investor who wants to exit should review the contract rather than simply withdrawing.

Can you resell an off-plan property contract?

Potentially, yes, but the original contract must be checked first.

An off-plan purchase agreement may contain an assignment clause explaining whether the buyer can transfer their rights to another person before completion. The developer may also need to give written consent.

The contract should be checked for:

• Assignment rights

• Developer consent

• Assignment administration fees

• Restrictions on resale

• Minimum holding periods

• Notice requirements

• Completion deadlines

• Deposit and instalment obligations

• Requirements imposed on the incoming buyer

If assignment is prohibited or restricted, the investor may need to explore another exit structure with their solicitor and the developer.

How does an off-plan contract resale work?

A typical transaction can involve the following parties:

Original buyer: The investor who signed the off-plan purchase contract.

Developer: The original seller of the property.

New buyer: The person who wants to take over the contractual purchase.

Solicitors: The legal professionals who document and coordinate the transaction.

For example, an investor agrees to purchase an off-plan apartment for £300,000. Before completion, the investor finds another purchaser willing to take over the contract for £330,000.

If the contract permits assignment and the required approvals are obtained, the original buyer may assign their contractual rights to the new purchaser.

The new purchaser then completes the property transaction in accordance with the applicable contractual structure.

Assignment versus selling the completed property

There is an important difference between assigning an off-plan contract and selling a property you already own.

With a normal property resale, you own the property and sell the legal interest in it.

With an assignment, the original buyer may still only hold contractual rights under the purchase agreement. The property itself has not necessarily been transferred into their name.

HMRC specifically treats certain assignments of contractual rights before completion as pre-completion transactions for SDLT purposes.

This distinction is important because the tax and legal treatment can differ from an ordinary property sale.

How much can you make from reselling an off-plan contract?

The potential commercial return depends on the difference between the original contract position and what the new buyer is prepared to pay, after allowing for all associated costs.

For example:

Original purchase contract: £350,000
Assignment consideration: £380,000
Gross difference: £30,000

The £30,000 is not automatically the investor's net profit.

You may need to account for:

• Developer assignment fees

• Solicitor fees

• Agent or marketing costs

• Finance costs

• Taxes

• Outstanding payments

• Other contractual expenses

A proper calculation should therefore be completed before agreeing the resale price.

What if the off-plan property has increased in value?

An increase in the property's expected market value can create an opportunity to assign the contract at a higher price.

Suppose an investor contracted to purchase an apartment for £400,000 and comparable units are subsequently being marketed at around £450,000.

The investor may consider finding a buyer willing to take over the contractual position.

However, the new buyer will usually assess the total cost of taking over the contract rather than simply looking at the developer's original price. They may consider current comparable properties, expected rental income, service charges, financing costs and the remaining development risk.

The assignment therefore needs to make commercial sense for both parties.

SDLT when reselling an off-plan contract

SDLT is an important consideration.

HMRC's current guidance states that assignments of rights can fall within the rules for pre-completion transactions. In a simple example, HMRC considers a £1 million original property contract where the original purchaser assigns their rights for £100,000. The eventual purchaser's SDLT consideration is treated as £1.1 million in that example.

This means the assignment payment cannot simply be treated as an ordinary profit figure without considering the tax treatment.

The structure of the transaction matters, and professional tax advice should be obtained before completion.

Does the developer have to approve the resale?

Not necessarily in every transaction, but many off-plan contracts contain restrictions requiring developer consent.

The developer may want to verify the incoming buyer and ensure that the original contractual requirements are satisfied.

There may also be an administration charge for processing the assignment.

Before finding a buyer, it is sensible to establish exactly what the developer requires. Otherwise, an investor could agree a resale with someone only to discover that the proposed assignment cannot proceed under the original contract.

What if the developer does not allow assignment?

If assignment is not permitted, the investor should not assume that the property can simply be resold before completion.

Possible alternatives may include:

• Negotiating with the developer

• Reviewing the contract for another permitted transfer mechanism

• Exploring a subsale structure

• Considering a novation where appropriate

• Waiting until completion and selling the completed property

• Reviewing whether a contractual long-stop provision provides an exit

Each option has different legal and financial consequences.

Long-stop dates and delayed developments

A long-stop date can be particularly relevant where a development is delayed.

Some off-plan contracts specify a date by which the property must be completed, with provisions allowing the buyer to withdraw if qualifying delays continue beyond that date. GOV.UK guidance specifically recommends checking the contractual position where a property is still being built and notes that a long-stop date can permit withdrawal following significant delays.

This is different from assigning the contract to another investor. The solicitor should establish which contractual mechanism actually applies.

A practical process for reselling an off-plan contract

1. Review the original contract

Identify the assignment clause, restrictions, developer consent requirements and relevant deadlines.

2. Confirm the current financial position

Calculate the original purchase price, deposit paid, outstanding instalments and any other sums due.

3. Establish the current market position

Look at comparable completed and off-plan units to determine whether an assignment price is commercially realistic.

4. Confirm developer requirements

Find out whether the developer permits assignment and what documentation or fees are required.

5. Obtain professional advice

Instruct a solicitor or conveyancer experienced in property transactions involving assignments or off-plan purchases.

6. Find a suitable buyer

The buyer should understand that they are taking over a contractual position rather than simply purchasing a completed property.

7. Agree the assignment terms

The parties should clearly document the price, responsibilities, deadlines and costs.

8. Complete the legal transfer

The relevant legal documents should be prepared and executed correctly before the incoming buyer takes over the contractual position.

What investors should check before buying an assignable off-plan contract

The ability to assign a contract can be attractive to investors, but it should not be the only consideration when assessing an off-plan purchase.

Before committing, investigate:

• Whether assignment is actually permitted

• Developer reputation and track record

• Construction timetable

• Long-stop date

• Deposit structure

• Mortgage requirements

• Service charge estimates

• Ground rent provisions where relevant

• Expected rental demand

• Comparable property prices

• Assignment fees

• Potential SDLT consequences

• Restrictions on the incoming purchaser

An assignment clause does not guarantee that an investor will find a buyer or make a profit.

Fraser Bond support for off-plan contract resales

Fraser Bond can support investors assessing off-plan property opportunities and potential exit strategies across the UK.

Our property consultancy support can include reviewing the commercial position, assessing resale considerations, coordinating relevant property professionals and helping investors evaluate whether an assignment or alternative exit strategy fits their circumstances.

Legal assignment documents, conveyancing and tax advice should be handled by appropriately qualified solicitors, conveyancers and tax advisers.

Planning the exit strategy before committing to an off-plan purchase can help investors understand their options if their circumstances or the market changes before completion.