Janus Conservation Ltd

Janus Conservation Ltd Conservation Architecture, Historic Building Surveys & Heritage Consultancy.

Janus Conservation Ltd is a Royal Institution of Chartered Surveyors (RICS) regulated firm and recognised Historic Environment Service Provider (HESPR) operating exclusively in the heritage sector from our offices in Mayfair, London and Thame, Oxfordshire. We specialise in the survey, repair, alteration and management of projects to some of the United Kingdom’s finest and most cherished historic b

uildings, structures and monuments. We have the required qualifications, skills, knowledge and experience to ensure that your heritage asset is treated with the utmost care and attention, and we pride ourselves on providing the highest level of customer service and discretion.

🎓 We’re   a Graduate Conservation SurveyorJoin Janus Conservation and start your career working across building surveyin...
23/04/2026

🎓 We’re a Graduate Conservation Surveyor

Join Janus Conservation and start your career working across building surveying, heritage consultancy, and project delivery - gaining hands-on experience with historic buildings from day one.

Based in Thame, this is a rare opportunity to develop as a well-rounded conservation professional, supported through a structured training pathway towards RICS and IHBC qualification.

To apply, send your CV and a short cover letter to: [email protected]

Last week, our conservation surveyors were on site in Harlow, carrying out a heritage window appraisal and preparing a H...
04/02/2026

Last week, our conservation surveyors were on site in Harlow, carrying out a heritage window appraisal and preparing a Heritage Statement for a mid-18th-century house with a partially timber-framed structure and later 19th-century alterations.

One of the most rewarding parts of this work is uncovering how historic buildings evolve over time. Through historic mapping and archival imagery, we identified that the property once formed part of a larger group of buildings, providing valuable insight into the site’s development and how the surviving structure sits within its wider historic context.

We’ve recently been preparing a Heritage Statement for a lovely 18th century house in the heart of an Oxfordshire villag...
22/09/2025

We’ve recently been preparing a Heritage Statement for a lovely 18th century house in the heart of an Oxfordshire village. The building’s current custodians are planning a series of repairs and refurbishments to support its continued domestic use. With its vernacular character forming a key part of its significance, and its location within a conservation area, understanding the wider context has also been essential to our work.

As part of our research, we uncovered several historic images of the property. What’s striking is how little the scene has changed over the years. The continuity of the street, with its familiar rooflines and frontages, is a reminder of the resilience of historic places and the enduring character of village life.

We recently undertook a condition inspection of Newbury Town Hall, a Grade II listed civic landmark in the heart of the ...
27/08/2025

We recently undertook a condition inspection of Newbury Town Hall, a Grade II listed civic landmark in the heart of the Market Place.

Designed by James H. Money in 1876, the building draws on the Gothic Revival style popularised by Alfred Waterhouse. Its polychrome brickwork, steep tiled roofs, arched windows and prominent clock tower remain a distinctive feature of the townscape.

Our inspection focused on the principal elevations and incorporated drone photography to document areas not easily visible from ground level - helping to build a clear, visual record to support ongoing care and maintenance.

Thanks to Newbury Town Council for the opportunity to assist in the stewardship of this important building.

Last week, our historic building surveyors carried out a domestic condition survey of a flat in this striking 1936–7 Art...
08/08/2025

Last week, our historic building surveyors carried out a domestic condition survey of a flat in this striking 1936–7 Art Deco–Art Moderne high-rise in Marylebone.

Working with buildings from this period offers valuable insight into 20th-century construction and design—an important part of our historic built environment that deserves careful consideration.

Last week, our Heritage Consultants had the privilege of stepping inside the extraordinary Painted Room at the Grade I l...
07/08/2025

Last week, our Heritage Consultants had the privilege of stepping inside the extraordinary Painted Room at the Grade I listed Spencer House — the jewel in the crown of what is widely considered London’s finest surviving eighteenth-century townhouse.

Designed by James ‘Athenian’ Stuart in 1759 and largely completed by 1765, the Painted Room is among the earliest complete Neo-Classical interiors in Europe. Its richly evocative scheme features frescoes of garlands, classical urns, and cherubs set against a blue-green ground, which frame exquisitely painted panels depicting scenes with a theme of love and marriage.

Over the centuries, the frescoes have undergone multiple phases of restoration and overpainting — particularly following significant damage sustained during the Second World War. Today, one of these historic repairs is showing signs of deterioration, and in response, we’re launching an exciting investigative project, working closely with a historic paint specialist to analyse the decorative layers. Our aim is to accurately determine the age and composition of different elements of the scheme to help guide its future conservation and ensure this remarkable space continues to inspire for generations to come.

Today, our historic building surveyors had the pleasure of undertaking a pre-acquisition survey of this remarkable Grade...
29/07/2025

Today, our historic building surveyors had the pleasure of undertaking a pre-acquisition survey of this remarkable Grade I listed house and barn complex dating from the 15th century.

Working on buildings of this calibre is a true privilege.

The photos speak for themselves.

Recently, our historic building surveyors have been out in London, visiting two interesting sites.We began at Christ Chu...
24/07/2025

Recently, our historic building surveyors have been out in London, visiting two interesting sites.

We began at Christ Church Spitalfields, where we undertook an internal survey of the crypt. Our Director is proud to serve as Surveyor to the Fabric of this exceptional church. The visit focused on planning indent repairs to the stone piers, ensuring future works are carried out with care and sensitivity to the historic fabric.

We also carried out a condition survey of a Georgian property in St James’s, where we inspected a later-added balcony. During our visit, we observed that bricks had been temporarily removed nearby as part of separate works. This exposed evidence that the building had been re-fronted, likely during the 20th century—an alteration not visible from the current elevation.

These insights—often revealed through close-up inspection—are vital to understanding how historic buildings have evolved, and to planning their careful conservation.

Last week, our heritage consultants visited a beautiful part timber-framed, Grade II listed farmhouse in Oxfordshire. Or...
15/07/2025

Last week, our heritage consultants visited a beautiful part timber-framed, Grade II listed farmhouse in Oxfordshire. Originally built in the early 18th century as two farm workers' cottages - possibly with thatched roofs - the building still features one of its original inglenook fireplaces, complete with bread oven.

In the 19th century, the cottages were knocked together and extended with the addition of a rear range, creating the double-pile plan seen today.

We are now in the process of preparing a Heritage Statement to inform a phase of refurbishment works, including a new side extension, which will help unify the two phases of development and make the most of the property’s stunning west-facing views.

This week, our heritage consultants were in beautiful Bath, exploring a Grade II listed terraced property. Originally a ...
05/07/2025

This week, our heritage consultants were in beautiful Bath, exploring a Grade II listed terraced property. Originally a house, it is thought to have become a bakery in the 19th century. Its legacy and past use are still tangible today, with three historic ovens surviving in the basement. Despite modern alterations, elements of the historic shopfront also remain, offering a fascinating glimpse into the building’s commercial past.

Located within the Bath City Centre Conservation Area and the UNESCO World Heritage Site, the property is surrounded by the city’s exceptional Georgian architecture and enjoys a highly significant setting opposite Hedgemead Park.

We thoroughly enjoyed investigating its historic fabric and the surrounding streetscape as we begin to inform plans for its future refurbishment.

Address

The Sanderum Centre, 30A Upper High Street
Thame
OX93EX

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm

Alerts

Be the first to know and let us send you an email when Janus Conservation Ltd posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Janus Conservation Ltd:

Share

Category