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Advice on buying and altering a new build apartment

Insight

new-build apartment

Each month, the Farrer & Co Residential Property partners give us a brief insight into their working lives. This month, we provide an overview of advice given to a client buying a new build apartment from a developer and wanting to carry out design alterations before moving in.

The Brief

We acted for a client buying a new build apartment in a prestigious central London residential development. While the apartment was due to be finished to a high standard, our client wanted to make their own bespoke internal alterations prior to occupation. This raised several legal and practical considerations which needed to be addressed ahead of exchange. 

Executing the Brief

The starting point was to engage with the developer. As our client wanted to make significant changes to the kitchen and flooring, they would require the developer's prior written consent under the terms of the apartment lease.

Our client was eager to avoid any delays in securing this consent and ensure that no discretion could be exercised by the landlord to withhold the permission. This meant the neatest solution was to make the grant of the licence for alterations on completion a condition of the purchase contract, which would ensure our client would receive the consent to alterations at the same time as getting the keys to their new apartment.

The developer, used to the requirements of ultra-high-net-worth buyers, was willing to accommodate this proposal, provided our client was prepared to:

  • draw up full and detailed plans of the proposed alterations ahead of exchange;
  • accept that the consent would be subject to our client securing all necessary Building Safety Regulator (BSR) consents, due to the apartment being in a higher-risk building for the purposes of the Building Safety Act 2022; and
  • agree that the licence would be subject to securing any necessary planning permission and listed building consent.

We had flagged to our client at the outset that the higher-risk building status meant that BSR approval of the proposed alterations would need to be in hand before their works could begin, and that the BSR would also need to sign off on the completed works before they would be legally allowed to move into the apartment. We also highlighted the ongoing significant delays at the BSR in processing applications, and the importance of appointing a suitable project team to help manage the complex BSR consent process as smoothly and promptly as possible. An error in the BSR application, or the need for a significant design change part-way through the project, could severely affect the speed and cost of the project. A fresh application may be needed in such circumstances which would put our client back to the start of a long queue.

Our client was relieved that the developer was happy to accommodate their request and promptly appointed their chosen architect who, crucially, had a proven track record dealing with the BSR and higher-risk buildings under the new building safety regime.

While the plans and detailed designs were being finalised, we were able to progress the contract variations and form of licence for alterations with the developer's solicitor. As the purchase was being mortgage financed, we also liaised with the lender to get them comfortable on the proposed works ahead of exchange.

The debrief

The transaction exchanged successfully last month with the agreed condition in place and the full set of agreed plans attached to the contract. Our client now has a clear pathway to implement their bespoke design once the requisite BSR approval is in hand.

The issues involved in buying and selling new build residential properties are varied and can be complicated, but we have extensive experience in handling off-plan and new build transactions, including in higher-risk buildings. For further details, please refer to our Buying a new build residential property in England and Wales guide.

We are always happy to discuss the conveyancing process and how to manage a transaction.

This publication is a general summary of the law. It should not replace legal advice tailored to your specific circumstances.

© Farrer & Co LLP, November 2025

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About the authors

Hugh Wigzell lawyer photo

Hugh Wigzell

Partner

Hugh is a residential property specialist experienced in high-value conveyancing and acting for both banks and borrowers in secured lending transactions. In particular, Hugh has extensive experience in acting on new-build acquisitions and sales and frequently represents purchasers based outside of the UK.

Hugh is a residential property specialist experienced in high-value conveyancing and acting for both banks and borrowers in secured lending transactions. In particular, Hugh has extensive experience in acting on new-build acquisitions and sales and frequently represents purchasers based outside of the UK.

Email Hugh +44 (0)20 3375 7618
Laura Conduit lawyer photo

Laura Conduit

Partner

Laura is a specialist residential property solicitor, dealing with sale, purchase and mortgage transactions. Laura deals with all types of residential property, whether freehold or leasehold, town or country but she has a great deal of experience in the prime central London market. Laura particularly enjoys a fast paced deal and has an excellent track record for delivering quality advice and exchanging transactions under pressure.

Laura is a specialist residential property solicitor, dealing with sale, purchase and mortgage transactions. Laura deals with all types of residential property, whether freehold or leasehold, town or country but she has a great deal of experience in the prime central London market. Laura particularly enjoys a fast paced deal and has an excellent track record for delivering quality advice and exchanging transactions under pressure.

Email Laura +44 (0)20 3375 7161
Laurie Horwood lawyer photo

Laurie Horwood

Partner – Board Member

Laurie acts for individuals, institutions, private banks and others on property transactions with a particular focus on high value residential properties. His wide ranging market knowledge ensures he is able to work to achieve a successful transaction. He has acted for many of his clients for many years as their property interests have become more valuable and complex. He has an excellent understanding of the value and importance of relationships within the private wealth world and a desire to work collaboratively with all those involved in a transaction. 

Laurie acts for individuals, institutions, private banks and others on property transactions with a particular focus on high value residential properties. His wide ranging market knowledge ensures he is able to work to achieve a successful transaction. He has acted for many of his clients for many years as their property interests have become more valuable and complex. He has an excellent understanding of the value and importance of relationships within the private wealth world and a desire to work collaboratively with all those involved in a transaction. 

Email Laurie +44 (0)20 3375 7193
Annabel Dean lawyer photo

Annabel Dean

Partner

Annabel advises on all aspects of the acquisition and management of real estate, particularly residential property. Her clients include individuals, trustees and landed estates. Annabel also has a great deal of experience acting for lenders taking security over property.

Annabel advises on all aspects of the acquisition and management of real estate, particularly residential property. Her clients include individuals, trustees and landed estates. Annabel also has a great deal of experience acting for lenders taking security over property.

Email Annabel +44 (0)20 3375 7206
Edmund Featherston-Dilke lawyer photo

Edmund Fetherston-Dilke

Partner

Edmund's practice has grown over many years to include agricultural estates work, residential and commercial property. This breadth of experience benefits clients, many of whom have a wide variety of property interests. His clients vary from institutional land owners, charities, property companies, individuals and farmers. Edmund was appointed the Solicitor to the Duchy of Cornwall in June 2020.

Edmund's practice has grown over many years to include agricultural estates work, residential and commercial property. This breadth of experience benefits clients, many of whom have a wide variety of property interests. His clients vary from institutional land owners, charities, property companies, individuals and farmers. Edmund was appointed the Solicitor to the Duchy of Cornwall in June 2020.

Email Edmund +44 (0)20 3375 7280
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