New-Build Conveyancing: What Buyers Need to Know

TL;DR: New-build conveyancing follows the same broad legal process as buying an existing property, but it comes with extra layers — tight developer deadlines, buying "off-plan" from drawings rather than a finished house, additional checks on warranties and management arrangements, and a legal process that often has to move faster than usual to satisfy the developer's own exchange timetable.

Buying a brand-new home is exciting: fresh carpets, nobody else's history to worry about, and often a shiny show home to walk through before you commit. But the conveyancing side of a new-build purchase can catch buyers off guard, particularly the pressure to exchange contracts within a strict window set by the developer, sometimes as little as 28 days after reservation.

This article looks at how new-build conveyancing differs from buying an existing home, what extra checks and documents are usually involved, why timing is often tighter, and what buyers commonly ask their conveyancer to look out for.

Before we continue: I'm a blog writer, not a solicitor or licensed conveyancer, so this is general information rather than personal legal advice. New-build contracts and developer arrangements vary considerably, so it's always worth discussing the specifics of your purchase with a qualified professional.

Table of contents

• How new-build conveyancing differs from buying an existing home
• Buying off-plan versus buying a completed new-build
• Why developer deadlines put pressure on the timeline
• New-build warranties and why they matter
• Extra checks your conveyancer typically carries out
• Leasehold, freehold, and estate management considerations
• Snagging and the practical completion gap
• Developer incentives and part-exchange schemes
• Red flags to watch for with new-build purchases
• FAQs about new-build conveyancing
• Summary and what to do next

How new-build conveyancing differs from buying an existing home

At its core, conveyancing on a new-build still involves the same fundamental steps: checking title, running searches, reviewing the contract, exchanging, and completing. What changes is the context around those steps.

Key differences from a standard resale purchase

• You're often dealing with a developer's in-house or panel solicitor rather than an individual seller's conveyancer
• The property may not be physically finished yet, so you're relying partly on plans and specifications
• Developers typically impose a fixed exchange deadline, unlike the more flexible timelines common in chains of existing homes
• There's no property chain above you if buying directly from a developer, though you may still be part of one below if you're selling an existing home
• Additional documents specific to new-builds, such as warranties and specification sheets, need reviewing alongside the usual contract and title documents

None of this makes new-build conveyancing inherently more difficult, but it does mean a slightly different set of things to stay on top of compared with buying a home that's already lived in.

Buying off-plan versus buying a completed new-build

New-build purchases generally fall into two categories, and the conveyancing experience differs a little between them.

Off-plan purchases

Buying off-plan means reserving and often exchanging contracts before the property is physically complete, based on architectural plans, a specification list, and sometimes a show home for a similar layout. This can mean a longer gap between exchange and completion, since completion is usually triggered by the property reaching practical completion rather than a fixed calendar date.

Completed or near-complete new-builds

Buying a home that's already built, or very close to finished, gives you the advantage of being able to view the actual property before committing, and generally means a shorter, more predictable gap between exchange and completion, closer to how a resale purchase typically works.

• Ask the developer or their sales team which category your purchase falls into
• For off-plan purchases, ask for an estimated completion window and how firm it is
• Check whether the specification could still change before completion, and what your rights are if it does

Why developer deadlines put pressure on the timeline

One of the most commonly discussed aspects of new-build conveyancing is the exchange deadline set by the developer, often 28 days from reservation, though this varies.

Why this matters

Developers typically set this deadline to keep their sales pipeline moving and to avoid properties being reserved indefinitely without commitment. For buyers, it means searches, mortgage offers, and legal enquiries all need to be completed within a much shorter window than is typical for a resale purchase, where timelines are often more flexible.

• Missing the developer's deadline can sometimes mean losing your reservation fee or the property being put back on the market
• A mortgage offer needs to be secured quickly, so having your finances in order before reserving is genuinely valuable
• Your conveyancer needs to be instructed and ready to act immediately once you reserve, rather than weeks later

Practical steps that can help you meet a tight deadline

1. Get a mortgage agreement in principle before reserving. This shortens the time needed to secure a full mortgage offer later.
2. Instruct a conveyancer experienced with new-builds in advance. Some firms are more used to the developer's paperwork and processes than others.
3. Respond to document requests quickly. ID checks, proof of funds and signed forms can all cause delay if left sitting in an inbox.
4. Ask the developer's sales team for their solicitor's contact details early. This lets your conveyancer start requesting the contract pack straight away.

New-build warranties and why they matter

New-build homes typically come with a structural warranty, most commonly provided by the National House Building Council (NHBC) or a similar provider, alongside other schemes operating in the market.

What a typical new-build warranty covers

• An initial defects period, often around the first two years, during which the developer is generally responsible for fixing most issues
• A longer structural insurance period, often extending to ten years from completion, covering major structural defects
• Specific exclusions, which vary by provider and are worth reading carefully rather than assuming

Your conveyancer will typically check that a warranty is in place and that its terms are as expected before you exchange contracts, since mortgage lenders usually require an accepted form of new-build warranty before they'll lend on the property.

Extra checks your conveyancer typically carries out

Alongside the standard searches and enquiries carried out on any purchase, new-build transactions typically involve some additional checks specific to the property being newly constructed.

Additional documents and checks commonly involved

• Reviewing the developer's standard contract, which is often less negotiable than a typical resale contract
• Checking the specification list against what's been promised, particularly for off-plan purchases
• Confirming the warranty provider and reviewing the cover it provides
• Checking planning permission and building regulations approval for the development
• Reviewing any road and drainage agreements, particularly on larger new developments where roads may not yet be adopted by the local council
• Checking for any restrictive covenants specific to the development, such as rules about external alterations or parking

Leasehold, freehold, and estate management considerations

New-build houses are often sold as freehold, while new-build flats are typically leasehold, but it's not always that simple, and it's worth checking carefully rather than assuming.

Points worth clarifying with your conveyancer

• Whether the property is freehold or leasehold, and if leasehold, the length of the lease and the ground rent terms
• Whether there's an estate management company charging an annual fee for the upkeep of shared areas, roads, or open spaces, even on freehold houses
• What that estate charge currently covers, and whether it's likely to increase over time
• Who owns and maintains any communal facilities on the development, such as play areas or landscaped areas

Estate management charges on new-build developments have become a widely discussed topic in recent years, so it's generally worth understanding exactly what you'd be signing up to pay, and for what, before exchanging contracts.

Snagging and the practical completion gap

"Snagging" refers to identifying minor defects or unfinished details in a new-build property, and it's a process most new-build buyers become familiar with fairly quickly.

How snagging typically works

• Buyers often carry out (or pay a professional to carry out) a snagging inspection shortly after moving in, or sometimes before completion if access is granted
• Issues are reported to the developer, who is generally expected to fix them within a reasonable period under the terms of the warranty
• Keeping a written record of reported snags, with dates and photos, is generally a sensible approach

It's also worth understanding the gap between "practical completion" (when the property is legally ready to complete, even if minor finishing touches remain) and a home being fully snag-free, since these aren't always the same thing.

What if the developer doesn't fix reported snags?

Most developers do address reasonable snagging issues within a sensible timeframe, but delays and disagreements do sometimes happen. If a developer is slow to respond, many buyers find it helpful to escalate through the warranty provider (such as the NHBC), since most schemes have a formal process for resolving disputes between a buyer and a developer. It's also worth checking whether the developer is a member of a New Homes Ombudsman scheme or similar body, as this can provide an additional route for resolving disagreements that can't be settled directly.

• Keep every piece of correspondence about reported snags, including dates and photographs
• Follow up in writing rather than relying solely on verbal conversations with site staff
• Ask your conveyancer or the warranty provider what formal escalation options exist if a genuine impasse is reached

Developer incentives and part-exchange schemes

New-build developers sometimes offer financial incentives to help sell properties, and while these can be genuinely useful, it's worth understanding how they might interact with your conveyancing and mortgage arrangements.

Common types of incentive

• Contribution towards legal fees or stamp duty: a developer may offer to cover some or all of these costs as part of the deal
• Part-exchange schemes: the developer buys your existing home directly, which can remove you from a chain entirely, though usually at a valuation set by the developer rather than the open market
• Deposit contribution or cashback schemes: incentives paid towards your deposit or as cashback after completion
• Free upgrades: flooring, appliances or fittings included at no extra cost

Mortgage lenders generally need to be told about any incentive attached to a purchase, since it can affect how they value the property and how much they're willing to lend. Your conveyancer and mortgage broker will usually need full details of any incentive in writing, so it's worth asking the developer for this early rather than assuming it will be sorted out automatically later.

Red flags to watch for with new-build purchases

• Vague or shifting completion dates with no clear explanation for an off-plan purchase
• Reluctance from the developer's solicitor to provide a warranty document before exchange
• Unclear or missing information about an estate management company and its charges
• Pressure to exchange faster than your mortgage offer or searches can realistically support
• Significant last-minute changes to the specification without clear communication
• No clarity on who owns or maintains shared roads, drainage, or open spaces on the development

FAQs about new-build conveyancing

Is conveyancing more expensive for a new-build home?
Not always significantly, though some firms charge a little more to reflect the additional documents and checks involved, so it's worth asking for a clear quote upfront.

Why do developers set a 28-day exchange deadline?
It's generally to keep their sales process moving efficiently and avoid properties being reserved indefinitely, though the exact deadline varies between developers.

What happens if I miss the developer's exchange deadline?
This depends on the developer's specific terms, but it can sometimes mean losing your reservation fee or the property being released back onto the market, so it's worth checking the terms carefully when you reserve.

Do new-build homes come with a guarantee?
Most come with a structural warranty from a provider such as the NHBC or a similar scheme, typically covering an initial defects period followed by longer-term structural cover.

What is an estate management charge on a new-build?
It's a fee, separate from council tax, that some new-build developments charge for maintaining shared roads, open spaces or facilities, and it applies to some freehold properties as well as leasehold ones.

Can I negotiate the contract on a new-build purchase?
Developer contracts are often more standardised and less flexible than resale contracts, though your conveyancer can still raise queries and, in some cases, negotiate specific points on your behalf.

Summary and what to do next

• New-build conveyancing follows the same core legal process as a resale purchase, with extra layers around warranties, specifications and deadlines
• Developer exchange deadlines are often tight, so having finances and a conveyancer ready in advance genuinely helps
• Check the warranty provider and what it covers before exchanging contracts
• Ask specifically about estate management charges, even on freehold new-build houses
• Keep a written record of any snagging issues once you've moved in

This article is general information only, from a blogger's perspective rather than a solicitor's or licensed conveyancer's. It isn't personal legal advice. Always discuss the specifics of your new-build purchase with a qualified solicitor or licensed conveyancer.

Need help or have questions?

We're not solicitors or licensed conveyancers, so we can't advise on your specific new-build contract or warranty, but if you have a general question about how new-build conveyancing works, we're happy to point you towards further guides.

You can reach us through our contact form on the website using the button below. For advice specific to your own transaction, please speak to a qualified solicitor or licensed conveyancer directly.

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Reminder: this site is a blog, not a law firm, and nothing in this article is a substitute for professional legal advice. Always get personalised guidance from a qualified solicitor or licensed conveyancer before making decisions about buying or selling a home.