Why New Build Is Different
Buying a new build property is a significantly different proposition from purchasing an existing home. The legal, practical, and financial dynamics are unique — and being unprepared can be expensive. Here are the ten essential things every new build buyer must know.
1. Instruct Your Solicitor Immediately After Reservation
When you reserve a new build plot, the developer will typically give you a 28-day exchange deadline. This is not negotiable. If you miss the exchange deadline, you risk losing your reservation fee (typically £500–£2,000) and your chosen plot.
28 days is a very short time to complete all necessary legal due diligence — reviewing the developer's contract, carrying out searches, obtaining a mortgage offer, and raising enquiries. You must instruct your solicitor the day you reserve, not when you feel ready.
2. The Contract Is Written By the Developer's Lawyers
Developer contracts are sophisticated documents drafted by the developer's legal team to protect the developer's interests. Common developer-friendly provisions include:
- Extensive rights to vary the specification, layout, and appearance of the property
- A long stop date that gives the developer significant latitude to delay completion
- Restrictions on who can buy the property (no investor purchasers, no simultaneous purchase and sale)
- Service charges and estate management charges that are not always transparent
Your solicitor's job is to identify, report on, and where possible negotiate amendments to these provisions. Not all developers will accept amendments, but your solicitor should always try.
3. Understand the Long Stop Date
When you buy off-plan, you are committing to purchase a property that does not yet exist. The contract will contain:
- An estimated completion date — when the developer expects the property to be ready
- A long stop date — the latest date by which the developer must complete; if they miss this, you can rescind the contract and recover your deposit
The period between estimated completion and long stop can be substantial — often 12 months or more. Your solicitor must review these dates carefully and advise on your position if the developer misses them.
4. Disclose Incentives to Your Mortgage Lender
Developers frequently offer incentives to buyers — cashback, stamp duty paid, free carpets and appliances, part-exchange, or deposit contributions. All such incentives must be disclosed to your mortgage lender. Failing to disclose an incentive is mortgage fraud.
Lenders take incentives into account when assessing the property's value and how much they are prepared to lend. Some incentives reduce the lender's valuation.
5. The NHBC Warranty Is Valuable — But Not Unlimited
Most new builds come with an NHBC Buildmark warranty (or equivalent). This provides:
- 2 years of cover against defects in workmanship and materials
- A further 8 years of structural warranty
The warranty is transferable to future owners, which is an important selling point. However, there are limitations — the warranty only covers structural and major defects, not cosmetic issues. Your solicitor will verify the warranty is in place and that the certificate is properly issued in your name.
6. Carry Out a Thorough Snagging Inspection
Before you complete, you have the right to carry out a pre-completion inspection of the property — known as snagging. This is your opportunity to identify defects and deficiencies in the construction and finish before you take ownership.
Professional snagging companies can carry out a thorough inspection for £300–£500 and typically identify hundreds of issues that an untrained eye would miss. Your solicitor can include a snagging list in the completion requirements — requiring the developer to address all items before completion.
7. Estate Charges and Service Charges
Many new build developments involve shared infrastructure — roads, communal green spaces, play areas, lighting — that is managed by a private management company rather than adopted by the local council. You will typically be required to pay an annual estate management charge.
Your solicitor should investigate and report on:
- The annual estate charge and how it is calculated and can increase
- Who manages the estate and what services they provide
- Whether the roads and sewers will ever be adopted by the council (and if not, what happens if the management company fails)
8. Help to Buy and Shared Ownership: Extra Complexity
If you are using a government scheme such as Shared Ownership to purchase your new build, there is additional legal complexity. Shared ownership leases have specific provisions, the housing association must approve the transaction, and there are SDLT elections to consider. Ensure your solicitor has specific experience in the scheme you are using.
9. Check Planning and Permitted Development Rights
New build properties on modern estates often have planning conditions or covenant restrictions that remove permitted development rights — meaning you cannot extend, add a garage, or install solar panels without full planning permission.
Your solicitor should check whether permitted development rights have been removed and report to you on any restrictions on future development of the property.
10. Budget for Completion Day Flexibility
New build completion dates are notoriously flexible. Developers give 10 working days' notice of completion once they notify you the property is ready. This means you must be financially and practically ready to complete at any point within a wide window — which can cause problems for buyers who have given notice on a rental property or sold an existing home with a different completion date.
Consider carefully how you will manage the period between exchange and completion, and ensure your financial arrangements (mortgage offer validity, savings accessibility) can accommodate a completion over a wide range of dates.
