Finding a home - First time buyer

Guide to buying a new build off-plan

8 min read

Our guide to buying a new build off-plan gives you the lowdown on what it means, the pros and cons, and ultimately, is it worth it.

  • Parminder Phull

    Conveyancing Manager

    Published October 15th 2024

new build estate under construction

Considering buying a new build? You may be offered the option of buying a house off-plan. This is a popular choice for first-time buyers, thanks to the various help to buy schemes granting the power of possibility. It’s an exciting process as with these purchases, you can usually add some customisation into the build.

However, as with any house purchase, it comes with challenges, and therefore you should gain a full understanding of the pros and cons to off-plan purchases, before committing. Read on to find more information about buying a new build off-plan, as well as how the conveyancing process works.

In this article:

What does buying off-plan mean?

Buying a new build off-plan means purchasing a property before construction is complete and, in some cases, even before building work has started. It’s buying based purely on plans, which can sound risky, but there are perks too.

As well as options for personalisation, no onward chain and less work to do when you move in, financial support options for off-plan homes can be attractive.

While you obviously can’t view the final property, most big developers should be able to give you an idea of what to expect. Many will offer viewings at show homes that are very similar to any you’re interested in, so you can get a feel for the space and even some décor inspiration. At the very least, they should provide a pack of computer-generated visuals and detailed floor plans to give you a clear understanding of what you’re buying.

How do I buy off-plan?

There’s no rigid process to follow when buying off-plan. However, to help things run as smoothly as possible, make sure you check off the below:

Step 1: Explore suitable developments

  • Find a developer: Look for reputable developers with a track record of delivering quality properties on time.

  • Visit show homes: If available, visit the show homes in your desired area to get an idea of the build quality and design.

  • Review plans and specifications: Study the floor plans, site layout, and property specifications to understand exactly what you’re buying.

  • Check planning consent: You can and should view the planning consent. This document provides details on the scope and restrictions of the development, including architectural plans and any conditions set by the local council.

  • Review the lease: For leasehold properties, you should look into the lease duration, ground rent charges, service charges and maintenance costs and any restrictions on the property use or modifications.

Step 2: Secure your finances

  • Speak to a mortgage advisor to discuss your options.

  • Help to buy schemes: If you plan on using any of first time buyer schemes available, check that these are eligible with your chosen developer.

  • Get a mortgage in principle: Obtain a mortgage in principle from your lender to know how much you can borrow. Some lenders offer special mortgages for off-plan purchases.

  • Consider Deposit Requirements: Off-plan purchases often require a higher deposit, typically 10-30% of the property’s value.

Getting a mortgage agreement in principle not only confirms an amount that a mortgage provider is intending to lend to you, it will strengthen your standing with developers.

Step 3: Make an offer and reserve the property

  • Make your offer: Like any property purchase, once you're set on a property you need to make your offer.

  • Pay a Reservation Fee: To secure the property, you'll usually need to pay a reservation fee, this could be as much as £1000. The fee is often non-refundable, however, it is typically deducted from the purchase price.

  • Review plans and specifications (again): Before paying the reservation fee, ensure you've reviewed detailed copies of the plans and specifications. These documents should clearly outline the design, measurements, and the type and quality of materials and decorative finishes.

  • Sign a Reservation Agreement: This agreement outlines the terms of the reservation, including the agreed purchase price, completion date, and any conditions.

Step 4: Appoint a conveyancing solicitor

  • Experience in off-plan purchases: Choose a conveyancing solicitor with experience in off-plan purchases to guide you through the legal process, including checking the developer's contracts, planning permissions and ensuring everything is in order with your specific plot.

  • Exchange contracts: The developer will usually impose a deadline when it comes to exchanging contracts off-plan, meaning you’ll have to exchange within 28 days of agreeing the purchase. Once your conveyancer has completed the necessary checks, you’ll sign and exchange contracts with the developer. At this stage, you’ll pay the agreed deposit.

It helps to be as prepared as possible and find out more about new-build conveyancing and the conveyancing process in general.

Step 5: Sort your mortgage

Once the legal work is in process, agree your mortgage with a provider. The lender will then arrange for a valuation, based on your property’s plans and specification.


How do mortgages work for off-plan properties? When you get a mortgage offer, it’ll likely be valid for six months. If you haven’t completed in that time, you could experience mortgage challenges (more on this below). Keep in regular contact with your mortgage provider and, if it looks like your offer may expire due to late delivery of the property, discuss an offer extension. While they’re not obliged to, many lenders will agree to this for a limited amount of time.


Step 6: Monitor the build process

  • Regular Updates: The developer should provide regular updates on the construction progress, including estimated completion dates.

  • Visit the Site: If possible, visit the site periodically to see the progress and ensure everything is on track.

  • Understand the long-stop completion date: Familiarise yourself with the long-stop completion date outlined in your contract. This is the deadline by which the property must be completed.

Step 7: Do the paperwork

You’ll need to complete any paperwork, with the help of your conveyancer, by the deadline set by the developer. They’ll then facilitate the exchange of contracts and deposit.

Step 8: Plan your move in

There will be two dates to bear in mind:

  • The ‘build completion date’: This is when the developer expects the work to be completed and for you to be able to move in (this will only ever be a best guess).

  • The ‘long-stop date’: This is the latest date the developer expects to have the property completed by.

Step 9: Completion and final inspection

  • Snagging Inspection: Before completion, carry out a “snagging” inspection to identify any defects or unfinished work that the developer needs to address.

  • Final Payment: Upon completion, you’ll pay the remaining balance (typically via your mortgage lender), and the developer will hand over the keys.

Step 10: Post completion support

  • Aftercare Service: Once you've received the keys and moved in some developers offer an aftercare service for a specified period to fix any defects or issues that arise.

Are you tied to a conveyancing solicitor when buying off-plan?

When purchasing an off-plan property, you might find developers pushing you towards using their preferred conveyancing solicitors, claiming their solicitors' familiarity with the project leads to both cost savings and quicker transactions.

However, it's important to understand that you are not obligated to use the conveyancing solicitor recommended by the developer. In fact, choosing your own independent conveyancer can offer several advantages. The conveyancers we work with at My Home Move Conveyancing will review all documentation objectively and are more likely to address any issues without the potential bias that might arise from a solicitor who frequently works with the developer.

Why is your conveyancer choice important?

Navigating the unique complexities of purchasing an off-plan property can be challenging. Here’s why hiring the best legal help is crucial:

Ensuring a smooth transaction - A conveyancing solicitor experienced in off-plan properties will guide you through the intricate legal landscape, ensuring all documentation is accurate and deadlines are met. This expertise prevents delays and costly errors.

Managing unique challenges - Off-plan purchases involve unique challenges, such as construction delays and changes in property specifications. An experienced conveyancer can identify these issues early, negotiating terms that protect your interests.

Navigating financial implications - Buying off-plan often involves staged payments based on construction milestones. A skilled solicitor can help manage these payments and ensure that the terms of your contract are fair and transparent.

Protecting your investment - From ensuring the developer has proper planning permissions to scrutinising the terms of your purchase agreement, a dedicated legal expert safeguards your investment by mitigating risks and addressing any legal discrepancies.

Conducting thorough due diligence - An experienced conveyancing solicitor will carry out comprehensive due diligence, verifying the developer’s credentials and financial stability. This is crucial for ensuring that the project is completed as promised.

Is buying an off-plan property worth it?

Weigh up whether buying off-plan could work for you with these pros and cons:

What are the advantages of buying a house off-plan?

  • Personalisation. When you buy off-plan, you’ll often be able to specify fixtures and fittings, so your home will be exactly as you want it when you move in – no refurbs needed! Get in early on a development and you’ll even be able to pick the plot you like best.

  • Guarantees. New-build homes should come with a 10-year warranty covering structural defects, and any fixtures and fittings included will come with manufacturer warranties of their own.

  • No onward chain. When you buy straight from a developer in this way, there’s no upward chain of buyers and sellers to hold up completion.

  • Potential increase in value. Depending on the market, your home could be worth much more than you paid for it by the time you move in. Of course, the opposite could also happen.

What are the disadvantages of buying a house off-plan?

  • Mortgage challenges. If there are delays and you can’t complete before your mortgage offer expires, you’ll have to re-apply, possibly ending up with a less favourable product.

  • Deposit vulnerability. If you can’t get a further mortgage agreement in place after this and can’t pay the balance yourself, you could lose your deposit and have to find a new property. In this scenario, you could even be sued by the developer for the difference in price, if they later go on to sell the home for a lower amount.

  • Potential decrease in value. This could cause big issues, not least because if prices dip, mortgage lenders may not see your off-plan property as a viable investment when it comes to applying or re-applying. As above, this could lead to you losing your deposit and even being sued if you don’t raise the remaining balance yourself. Similarly, you may find yourself paying a ‘premium’ for a new property, and therefore the resale value could decline steeply in the first few years.

  • Delays. Setbacks in the homebuilding process are common. This brings lots of uncertainty, impacting your living arrangements and could lead to your mortgage offer expiring.

  • Teething issues, snagging and disruption. When you first move in, you can expect a few headaches – from things not working correctly to trouble getting post delivered. It’s also worth considering that, if your plot is one of the first completed, you may face disruption from construction on the rest of the development.


Top tip: Arrange a snagging survey. In the days before final completion, have a surveyor inspect your property for problems. Catching them now means you can demand your developer put them right before you move in.


  • Unwelcome surprises. No matter how many times you view the show home, nothing can give you a 100% accurate feel for how your finished property will be. You may find that you’re more overlooked by neighbours than you expected, for example, or that a different orientation means your property is darker than you’d imagined.

What's Included in the Price of an Off-Plan Property?

When purchasing an off-plan property, understanding what is included in the price can help you budget effectively and avoid unexpected costs later on. Here's what you typically can expect:

  1. Structural elements: The price generally covers the core structure of the building, including walls, roofs, and floors, ensuring a sound and secure home.

  2. Basic interior finishes: Standard interior surfaces like flooring (though often a basic option), wall paint, and tiling in kitchens and bathrooms are usually part of the package.

  3. Standard fixtures and fittings: Basic fixtures such as plumbing, electrical fittings, and in some cases, kitchen units and bathroom suites are often included. However, the specific quality may vary based on the developer.

  4. Outdoor spaces: Landscaping of common areas and driveways is often included, but personal outdoor areas like a private garden might come with extra costs, especially if you desire turf or specialised landscaping.

  5. Warranty and guarantees: Many off-plan properties come with a developer's warranty or a structural guarantee, which can be crucial for maintenance and peace of mind.

Items That Might Cost Extra

  • Upgraded materials: If you want premium floorings like hardwood or custom joinery, these often come at an additional cost.

  • Personalisation options: Some developers offer customisation packages that allow you to tailor the property to your tastes, which can increase the overall price.

  • Appliances: Kitchen appliances are sometimes not included or may require an upgrade for quality brands.

It's essential to communicate closely with the developer or sales agent to get a detailed list of inclusions and track any additional costs.

Financial considerations when buying off-plan

Getting a mortgage

Before making an off-plan property purchase, you must know how much you can borrow on a mortgage. Here's a step-by-step guide to help you through the process:

  1. Consult a Specialist Mortgage Broker: Speak with a mortgage broker who specialises in new builds and off-plan properties. They will have the expertise to navigate the specific requirements and limitations that might apply.

  2. Understand Lender Limitations: Be aware that many lenders offer reduced loan amounts for new builds, and some might not finance off-plan purchases at all. A specialist broker can identify which lenders are open to working with such properties.

  3. Evaluate Deposit Requirements: Even with a small deposit, getting a mortgage for an off-plan property is feasible. You might need to explore special schemes designed to help buyers with lower deposits.

  4. Check Scheme Eligibility: Research schemes like those provided by government initiatives or specific financial institutions. These programs often cater to individuals who are buying new builds or off-plan properties. Eligibility for such schemes can significantly impact your borrowing capacity.

  5. Use Online Calculators: Many mortgage lenders and financial websites offer online calculators where you can input your financial details to get a rough estimate of how much you might be able to borrow.

By following these steps, you can gain a clearer understanding of your mortgage options and how much you can borrow when purchasing an off-plan property.

Are off-plan properties cheaper?

They can work out cheaper thanks to the developer discounts of up to 5%.

Can you negotiate the price of an off-plan property?

Yes, as with any other property purchase, it’s possible to negotiate. Understanding the dynamics of the housebuilding industry can give you an advantage. Developers are often eager to sell properties off-plan since housebuilding is a cash-intensive business.

Recent market trends indicate that the level of off-plan sales has reached a decade-low. This downturn might work in your favour, as developers could be more willing to offer competitive prices to secure a sale.

To maximise your negotiation potential, consider the following tips:

  • Research market conditions: Understanding current trends and market data can provide leverage in your negotiations.

  • Know the developer's motivation: Being aware of the developer's need to sell can strengthen your position.

  • Be prepared to walk away: Sometimes, showing you have alternatives can prompt better offers.

Warranty and Insurance for off-plan homes

It's important to understand what new build home warranties cover and what they do not, to help you avoid any unexpected surprises. Additionally, we would recommend researching the types of insurance necessary for a newly constructed home, including what to look for in a policy.

New builds in a modern housing estate UK

Be insured for your purchase

Do you need an insurance quote for your off-plan purchase?

Do I have to pay stamp duty when buying off-plan?

There’s no difference to how much stamp duty you pay, whether you buy off-plan or otherwise. If you would like to calculate the stamp duty you will need to pay on your off-plan purchase you can use our calculator below.

Stamp duty calculator

The stamp duty calculator gives an indication of stamp duty liability for freehold residential property purchases across the UK.

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What if the developer goes bust when buying off-plan?

Purchasing off-plan can be an exciting venture. However, it comes with its own set of risks. One major concern is the possibility of the developer going bust. Here’s how you can protect yourself and what to expect:

Deposit protection

When you buy off-plan, safeguarding your deposit is crucial. Most reputable developers provide protection through a deposit protection warranty or insurance scheme. Look for schemes such as the National House Building Council (NHBC), which ensures you can recover your deposit if the developer fails financially.

Contractual safeguards

When signing a contract, ensure there is a clause that addresses what happens if the developer becomes insolvent. This provision should outline steps for retrieving your deposit and detail your rights in such situations.

Insurance policies

Consider additional insurance policies. Some companies offer buyer protection insurance, which covers a range of issues, including insolvency. Check with your insurance provider about available options. Our partner, One Click Cover can help if you do not currently have an insurance policy.

Stay vigilant with updates

You can regularly check the developer’s financial health by reviewing their financial reports and any industry news that indicates their stability. Staying updated significantly reduces unexpected setbacks.

Legal advice

Your Conveyancer can provide invaluable advice and ensure your contract includes all necessary protections against potential developer insolvency.

What to check when your off-plan home is finished

When your off-plan home is nearing completion, it's important to conduct a thorough inspection to ensure everything is up to standard. Here's a guide to what you should check:

Professional Snagging Inspection/Survey

You have the right to hire a professional snagging inspector, especially if the home is being built by a developer adhering to quality codes such as the New Homes Quality Code. This inspection will identify a variety of issues including:

  • Cosmetic issues: These could be minor fixes, like paint touch-ups or minor surface scratches.

  • Structural defects: Major problems could involve broken roof trusses or faulty wiring.

Comprehensive Snagging List

The result of the snagging inspection is a comprehensive list detailing all identified issues. This list should then be shared with your conveyancer and the builder. The builder is responsible for fixing these issues before the home's final handover.

Pre-Completion Inspection (PCI)

A Pre-Completion Inspection report is a detailed analysis that you should pass on to relevant parties. The conveyancer and builder should have access to this document to ensure that all identified issues are rectified.

The typical cost for a pre-completion snagging survey starts at around £320.

Questions to ask when buying a property off-plan

What’s the developer’s reputation like?

Before moving on an off-plan property, investigate the developer’s history and reputation. Do they have a habit of delivering projects late? Is their work of a high-standard, or are they notorious for cutting corners? If you can, speak to residents of their previous developments in web forums.

When can I see the property before completion?

As mentioned above, check you’ll be able to get in and have a look before you complete, mainly to spot any snags that the developer should fix. It’ll also be exciting to see your new home coming together!

Will there be any ongoing disruption?

If your property will complete before others in the scheme, get your developer timetable and work out how long any disruption is likely to last.

new build estate under construction

Interested in an off-plan property?

You’ll need a conveyancer to help you complete the legal work, get your conveyancing quote today.

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