Off-plan explained: what happens between reservation and keys?
From reservation and independent legal checks to exchange, construction and handover, understand what you are committing to.
By 36 Partners5 min read

An off-plan apartment exists first as drawings, a specification and a legal promise. That can be an attractive way to secure a particular home before a building is finished, but the distance between reservation and keys creates questions that a completed property does not. Knowing the sequence is the simplest way to ask better questions before committing money.
The HomeOwners Alliance guide to buying off-plan outlines the broad UK process. The precise terms belong to the individual reservation agreement and contract, and your independent solicitor should check them. Nothing in a general guide overrides the documents for the property you are buying.
Reservation: the first commitment
A buyer normally selects a unit and signs a reservation agreement, often paying a fee. Ask whether that fee is refundable, in which circumstances, and how long you have before the next stage. Obtain a copy of the draft contract, floorplan, specification and any proposed lease as early as possible. The agreed price is one part of the story; check what furniture, parking or extras are actually included.
Use this period to appoint an independent solicitor who understands new-build purchases. If you plan to borrow, discuss the expected completion window with a mortgage adviser. A mortgage offer obtained now may not remain valid until handover, and lending criteria can change. Do not make the decision on the assumption that today’s finance terms will definitely be available at a later date.
Exchange: what becomes binding?
At exchange of contracts the purchase normally becomes legally binding, subject to the exact contract terms. A deposit may be payable, but there is no universal reservation fee or deposit percentage for every development. Your solicitor should explain where the money is held, what protections apply, what happens if construction is delayed, and whether there is a long-stop date after which remedies may be available. Ask what variation rights the developer has over the design and finishes.
For an investor, check the lease length, service-charge budget, ground-rent terms where relevant, short-let restrictions and management arrangements. Understand the building warranty or other protection offered, and what it covers. A projected rental figure is not a contractual promise of occupancy or income. Independently compare it against current local listings.
Construction: monitor, do not assume
An estimated completion quarter is a planning aid, not a guarantee. Weather, supply chains, approvals and contractor issues can affect delivery. Ask for meaningful progress updates and distinguish a building being structurally complete from an apartment being ready to occupy. If you are relying on rental income from a particular month, model a delay and the costs of holding the purchase for longer.
During construction, ask whether the floorplan or specification has changed and how any variation is documented. Check when you will be able to inspect the unit or arrange a snagging survey. An independent inspection can help identify issues before or soon after handover, though the timing and access will depend on the contract.
Completion and the first tenancy
When the contractual completion conditions are met, the remaining balance becomes due. Your solicitor will handle the legal transfer and explain the documents required. Practical completion, legal completion and a tenant moving in are separate milestones. Allow for furnishing, safety checks, insurance, letting preparation and possible empty time before the first rent arrives.
Trafford Waters and The Gateway are examples of our listed schemes that should be evaluated using their own current contracts, plans, developer details and completion information. The same applies to SoapWorks. We do not set a single payment schedule for all partner developers, so request the current unit-specific terms rather than borrowing a timetable from another development.
The decision behind the process
Off-plan can suit someone comfortable committing ahead of completion, able to tolerate uncertainty in timing and willing to undertake thorough legal and financial checks. It is less suitable if immediate rent or an in-person inspection of the finished flat is essential. Neither assessment says anything about a guaranteed return.
Before reserving, ask for the current brochure, price and payment schedule, draft legal pack, specification, warranty information and realistic completion estimate. Have your own solicitor and, if relevant, mortgage adviser review them. Speak to 36 Partners to request current details for a listed scheme; we are the sales partner, not a replacement for independent advice.
The handover is a beginning, not an income event
After completion, someone still needs to arrange a safe, marketable home. Confirm responsibility for meters, utilities, any building induction and access for a letting agent. A snagging list may take time to resolve while a buyer is also furnishing the flat. If the investment depends on a prompt first tenancy, model a less convenient outcome rather than treating the date you receive keys as the date rent starts.
Keep your own advisers involved throughout, not only at reservation. A solicitor can help interpret a variation or delayed notice; a mortgage adviser can revisit the funding position well before the final balance is due. The process rewards clarity and patience more than a promise that a pre-completion purchase must be worth more at handover.
Source: HomeOwners Alliance, guide to buying off-plan. Specific transaction terms vary by developer and unit. Cover image is illustrative.
Ask for regular dated construction updates and note the difference between a target completion quarter and a binding contractual long-stop. If a delay would disrupt another commitment, build that possibility into your financial plan before exchange. The strongest reason to proceed is that the apartment, developer documents and cash timetable work together—not that a proposed handover date happens to suit a forecast.
This article is for general information only and does not constitute financial advice.
Related developments
Related Developments

Trafford Waters
TraffordCity, Manchester
0%
NET rental assurance, contracted for five years
Prices from £257,875
- 6% NET rental assurance, contracted for five years
- Waterfront, five-minute walk to the Trafford Centre (Rotheo brochure estimate)
- Furniture packs available from £2,995; 250-year leasehold

The Gateway
Pumpfields, Liverpool
0%
projected NET rental return
Prices from £354,950
- 6% projected NET rental return
- Completing Q1 2027
- Garden Spa, sky lounge and skybridge floors

SoapWorks
Pumpfields, Liverpool
Rental figures available on enquiry
Prices from £329,950
- Current availability and pricing available on enquiry
- Apartments in Liverpool's Pumpfields district
- Spa, cinema, gym and rooftop terraces
More from News

Investor Guides
Buying off-plan? The questions worth asking before you reserve
The most useful questions are often about the contract, the developer and the costs after handover.
24 July 2026 · 5 min read
Read article
Investor Guides
Off-plan or completed: which purchase suits your timetable?
One offers time before handover; the other lets you inspect the finished home. Neither removes investment risk.
18 July 2026 · 4 min read
Read article
Investor Guides
Why do investors buy the city, not just the apartment?
An excellent floorplan still needs a city, a street and a tenant.
2 July 2026 · 5 min read
Read articleSpeak to our team
Want to explore property investment opportunities?
Speak to the 36 Partners investment team.