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Who are the Landmark Group?

We are the only company in London specialising in loft conversions, extensions and refurbishments to have achieved the elite Chartered Building Company recognition. As such, we have a different sort of relationship with our clients than you would usually expect from a local building company. The relationship between Landmark and our clients is much closer to what you might expect from a professional advisor such as a chartered surveyor or engineer. We are here to look after your interests and use our expertise to guide you through the project.

Our project management team will be on site to inspect the work throughout the entire project, checking that the highest standards are met and that the work is being carried out in accordance with your wishes. Our team includes members of the Royal Institution of Chartered Surveyors, Association of Building Engineers and the Chartered Institute of Building so you can be assured that qualified professionals are working with you every step of the way. More

We only work with the very best suppliers and materials. For instance the flat roofing material (Topseal GRP) is an industry-leading product, and comes with a 30-year guarantee from the manufacturer. We specify composite timber/fiberglass sliding sash windows and timber/aluminium French doors which are a perfect low-maintenance product for period properties.

Each of our projects come (as standard) with an iron-clad 10-year insurance backed guarantee meaning that your deposit is fully protected and, in the unlikely event of us not being around in 10 years' time, your guarantee would still be honoured.

Alongside being a Chartered Building Company, we are unique in that our group also contains a RIBA Chartered Architectural Practice. This means that you have a dedicated firm of chartered architects working with you throughout the project, not just at the outset. Ordinarily RIBA architects charge a fee equivalent to ten-percent of the project value for their services but we include this as standard.

As part of our elite Chartered Building Company status, we are fully insured (importantly including professional indemnity insurance). For added security we are ombudsman backed through the Quality Assurance Association, giving you total peace of mind.

We pride ourselves on delivering outstanding and exciting projects for our clients, offering the highest standards of customer service at great value without compromising on quality.

Landmark Lofts

As a Chartered Building Company we have extensive experience designing and managing loft conversions and extensions. We deliver fantastic new living spaces for our clients which boost the value and utility of your home. We are the only company professionally qualified and regulated to project manage loft conversions and extensions, ensuring your project is completed stress-free and with minimum disruption to your home.

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Landmark Heating

Our specialist heating engineers use the latest energy efficient boilers and cylinders to help you heat and insulate your whole home. We aim to reduce your carbon footprint whilst cutting your energy bills. One of our engineers will test your existing system and advise you on any modifications that may be required to facilitate your loft conversion or extension.

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Landmark Architecture

The Landmark Group incorporates a RIBA Chartered Architectural Practice. Landmark Architecture specialises in domestic projects in London. Our architects' expertise in loft conversions, extensions and domestic refurbishments means that we can offer our clients creative designs that maximise the useable space and add value to your home. Drawings and models can be produced in both 2D and 3D to assist our clients.

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Landmark LLP

Our Chartered Building Consultants will assist you with the legal requirements for your loft conversion or extension. We can advise on extension of leases, freeholder consents and licenses to alter. We can help you ensure that all the necessary paperwork is in place and that the project progresses as smoothly as possible.


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Vincent-Brown & Associates Ltd

Our Partners

Vincent-Brown & Associates Ltd

Vincent-Brown & Associates Ltd are specialist nationwide party wall surveyors. As specialist party wall surveyors, they work within the provisions of the Party Wall etc. Act 1996. This Act puts in place steps to safeguard the rights of those undertaking certain types of building work and the rights of their adjoining neighbours. The Party Wall Act works to protect the owner undertaking the works, through the party wall surveyors, by ensuring that the work is lawful, whilst also protecting their neighbour's rights in the event of damage occurring.