Buying a new build home: reservation deadlines, contract timing, and what your solicitor checks

Key takeaways

• Your solicitor checks the developer title, contract pack, plot plan, warranty and key development documents.

• Check the reservation deadline immediately, complete identity and funds checks, and keep your lender updated about incentives or price changes.

• Searches, a mortgage valuation and a building survey answer different questions. A valuation is not a building survey.

• In England and Wales, exchange of contracts makes the purchase legally binding. Completion follows on the agreed date.

• Short reservation periods, missing developer papers, planning enquiries, lender conditions and construction notices can affect the timetable.

Buying a new build home: reservation deadlines, contract timing, and what your solicitor checks

Once you reserve a plot, the legal work begins. Your solicitor reviews the developer title, contract pack and development documents, orders searches, raises enquiries and prepares you and your lender for exchange and completion.

This guide explains the main stages of buying a new build home, what your solicitor does, what you need to do and where delays may arise. The process depends on the property, your mortgage and whether other transactions are linked in a chain. If you are looking for new build conveyancing solicitors or property lawyers, Smithfield Partners can discuss your move and the legal work involved.

What does your solicitor check when you buy a new build home?

Your solicitor reviews the developer title, draft contract, plot plan, rights and restrictions, planning information, warranty and development documents. They arrange appropriate searches, raise enquiries, report material points to you and your lender, prepare for exchange and completion, and apply to register your ownership after completion.

Your solicitor explains documents, costs and decisions that need your attention. The seller’s solicitor, estate agent, mortgage lender, search providers and other parties in a chain have separate roles. Your solicitor can coordinate with them, but cannot control how quickly they respond.

New build conveyancing stages from reservation to completion

1. Reserve the plot and check the deadline

Check the plot number, price, reservation fee, refund terms and exchange deadline. Send the reservation agreement, brochure and plot plan to your solicitor promptly. Complete identity and source of funds checks and tell your solicitor about your mortgage, deposit and any incentives.

2. Your solicitor reviews the developer contract pack

Your solicitor checks the developer title, contract, plot plan, access rights, service connections, restrictions and what is included in the price. A flat may need a detailed review of the lease, service charges, managing agent information and building insurance. Ask about anything unclear in the specification or sales material.

3. Searches, planning and warranty checks

Your solicitor orders searches appropriate to the plot and reviews planning permissions, building control information, warranty documents and papers about roads, drainage and shared areas. Search results and legal enquiries may need follow up. A solicitor’s legal review is different from an independent survey of the home’s physical condition.

Read the search results and legal report carefully and ask about anything you do not understand. Searches examine records and information relevant to the property. A survey assesses its physical condition. They answer different questions and are not substitutes for one another.

4. Progress your mortgage and disclose incentives

Apply for your mortgage early. Tell your solicitor and lender about developer contributions, upgrades, cashback and any price change. Your solicitor checks the lender instructions and reports relevant incentives. A mortgage valuation is for lending purposes and is not a building survey.

5. Review the advice, contract and costs

Your solicitor reports the legal findings and explains any issue that needs a decision. Some points can be resolved by obtaining missing papers or answers. Others may need further advice or investigation. The right response depends on the facts. Before exchange, make sure you understand the contract, completion date, money required and any costs that may arise.

6. Meet the exchange deadline

The developer may ask you to exchange within the reservation period, even if the home is not yet built. Your solicitor should report on the contract and confirm that you understand the obligations before exchange. In England and Wales, exchange normally makes the purchase legally binding.

7. Completion and registration

For a completed home, completion may take place on a fixed date. For a home under construction, the developer may serve notice after the contract conditions are met. Your solicitor arranges payment within the notice period, then deals with any required Stamp Duty Land Tax return and applies to register your ownership and mortgage. Registration processing times vary.

What you need to do as the buyer

You can help your purchase progress by keeping your conveyancer informed and responding clearly when something is needed. Prepare to:

• Complete identity and source of funds checks and provide supporting documents.

• Confirm your mortgage arrangements and provide lender details when available.

• Read the property forms, search results and legal report, then ask questions early.

• Arrange a suitable survey if you want an independent assessment of the home’s condition.

• Make sure your deposit and completion funds are available in time and understand how your solicitor will request them.

• Tell your solicitor if your plans, funding or preferred completion date change.

• Check payment instructions using a trusted phone number you already have before transferring money.

Common causes of delay with a new build purchase

New build purchases can be delayed by a short reservation period, a late contract pack, unanswered enquiries, search results, mortgage conditions or changes to the plot and specification. A lender may need updated information about incentives or the completion date. For a leasehold flat, management papers and building information may take time to arrive. Give your solicitor requested documents promptly and ask them to identify critical dates early. Timing also depends on the developer, lender and other parties, so a completion date cannot be guaranteed until the contractual requirements are met.

How long does new build conveyancing take?

There is no single timescale for every new build purchase. If the home is complete, the contract may set a completion date. If it is still being built, completion may depend on a notice from the developer once the contract conditions are met. Your solicitor can explain the notice period and payment deadline in your contract.

Conveyancing costs and requesting a purchase quote

Your total cost can include your solicitor’s legal fee, VAT, payments to third parties and additional work if the transaction requires it. Search costs and HM Land Registry fees depend on the property and transaction. Stamp Duty Land Tax may apply depending on the purchase and your circumstances.

Ask for a written, itemised quote that explains what is included, what could be additional and when payments are due. Review the residential conveyancing pricing and request a purchase quote from Smithfield Partners. The quote should reflect the property, tenure, mortgage and your circumstances.

Choosing a solicitor for a new build purchase

When comparing conveyancing solicitors, look beyond the headline price. Ask who will handle your matter, how you will receive updates, what the quote covers, which costs could change and how questions are dealt with. If you have a mortgage, check that the firm can act for your lender.

Smithfield Partners’ residential property team supports buyers and sellers with clear written quotes and practical guidance. Learn about the firm’s residential conveyancing services, review the published fees or contact Smithfield Partners to discuss your move.

Frequently asked questions

When should I instruct a solicitor for a new build?

Choose a conveyancer as soon as you reserve a plot, or earlier if you can. The developer may set a short exchange deadline, so early instruction gives your solicitor time to review the contract and raise questions.

Are property searches the same as a survey?

No. Searches examine records and information relevant to the property. A survey assesses its physical condition. They serve different purposes, and buyers may choose to arrange both.

When does a house purchase become legally binding?

In England and Wales, the agreement normally becomes legally binding when contracts are exchanged. Your solicitor will explain the commitments and confirm when exchange has taken place.

What can delay a new build purchase?

Search results, incomplete title or lease papers, unanswered enquiries, lender requirements and delays elsewhere in a chain can all affect progress. Responding promptly helps, but the timing depends on everyone involved.

How can I get a new build conveyancing quote?

Share the property price, tenure, transaction type, mortgage details if known and any important timing with the conveyancing team. You can review the residential conveyancing pricing and request a purchase quote.

This guide provides general information about buying residential property in England and Wales. It is not legal advice for a specific transaction. The work required depends on the property and your circumstances.