• Cassidy and Tate Professional Outfit With Great Property MarketingCassidy and Tate's help sell my St Albans property. I was very impressed with the marketing, the photos they took made me want to stay they made the property look that good! Siobhan was very helpful t... read more.
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  • Highly recommend. Professional and efficient.Stuart at Cassidy and Tate was extremely helpful when we were selling our house in St Albans. Very professional photographs were taken and sensible selling price was given. We sold our two bed house a... read more.
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  • Great teamworkDavid, Duncan and team were fantastic throughout. Felt like I was working with friends throughout who had my back, and enabled a quick sale through to completion in order to meet my purchase timelines... read more.
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Guessens Mews

Guessens Mews

Cassidy & Tate’s dedicated new homes team continues to flourish and are able to offer a superb and varied collection of brand new homes. Partnering with local developers and national house builders, we deliver the best new developments to the market across Hertfordshire using the strength of our brand, our experience, and our specialist knowledge.

Guessens Mews is a redevelopment of a prestigious grade II* listed building and former home of the renowned Poet Edward Young and is located in the sought after village of Welwyn.

The development has been carefully designed by the award-winning local architect Ivan Clarke and has been carefully created to take into account the beautiful period features of the house.  Enhancing the original glory and character of the building Ivan has designed 5 stunning homes from the existing house and 2 thoughtful new builds.

All the properties benefit from having full access to the spectacular South West facing shared gardens and the River Mimram.

The development team at Netherdown have felt very privileged to be working on the restoration of such an amazing building and know that Guessens has been a hugely important part of the historical fabric of Welwyn village and therefore really wanted to be able to share journey with everyone.

Netherdown are very proud of what has been achieved with the careful restoration and development of Guessens. Below you will find tours of both Edward Young’s Wing and the Ballroom, both plots are now fully completed ready for sale. We think they make stunning homes, and we hope you will agree…

Site Map

Available Plots

Plot 1 – Young’s Cottage – 2 Bedroom Home

(New Build)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining Sitting Area20’2″ x 26’9″6.15m x 8.2m
Bedroom 1 with En-suite17’8″ x 10’5″5.4m x 3.2m
Bedroom 2 with En-suite17’8″ x 9’8″5.4m x 3m

Plot 2 – Poet’s Cottage – 2 Bedroom Home

(New Build)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining / Sitting Area13’5″ x 31’9″4.1m x 9.7m
Bedroom 1 with En-Suite13’5″ x 17’0″4.1m x 5.2m
Bedroom 2 with Ensuite13’5″ x 13’9″4.1m x 4.2m

Plot 3 – Courtyard View – 3 Bedroom Home

(Grade II* Listed Manor)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining17’8″ x 19’8″5.4m x 6m
Reception room12’5″ x 17’0″3.8m x 5.2m
Bedroom 1 with En-Suite12’5″ x 17’0″3.8m x 5.2m
Bedroom 210’9″ x 12’9″3.3m x 3.9m
Bedroom 312’9″ x 8’2″3.9m x 2.5m
Main Bathroom5’6″ x 10’5″1.7m x 3.2m

Plot 4 – Edward Young’s Manor – 4 Bedroom Home

(Grade II* Listed Manor)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining / Siting Area15’1″ x 29’10”4.6m x 9.1m
Dining Room14’9″ x 19’0″4.5m x 5.8m
Study9’2″ x 19’0″2.8m x 5.8m
Reception Room – First Floor15’1″ x 29’2″4.6m x 8.9m
Bedroom 1 with Dressing Room and En-suite24’6″ x 20’0″7.5m x 6.1m
Bedroom 2 with En-suite15’5″ x 17’4″4.7m x 5.3m
Bedroom 313’4″ x 15’8″4.1m x 4.8m
Bedroom 410’11” x 11’1″3.35m x 3.4
Main Bathroom6’10” x 10’2″2.1m x 3.1m

Plot 5 – Edward Young’s Wing – 4 Bedroom Home

(Grade II* Listed Manor)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining Area18’4″ x 19’4″5.6m x 5.9m
Reception Room14’5″ x 17’8″4.4m x 5.4m
Bedroom 1 with En-suite14’9″ x 16’4″4.5m x 5m
Bedroom 2 with En-Suite17’8″ x 20’0″5.4m x 6.1m
Bedroom 310’9″ x 14’1″3.3m x 4.3m
Bedroom 414’5″ x 12’9″4.4m x 3.9m
Main Bathroom6’2″ x 10’2″1.9m x 3.1m

Plot 6 – The Ballroom – 3 Bedroom Home

(Grade II* Listed Manor)

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining Area17’0″ x 23’11”5.2m x 7.3m
Reception Room18’4″ x 12’5″5.6m x 3.8m
Bedroom 1 with En-suite18’0″ x 13’9″5.5m x 4.2m
Bedroom 2 with En-suite12’9″ x 14’9″3.9m x 4.5m
Bedroom 39’10” x 10’2″3m x 3.1m

Plot 7 – Little Guessens

3 Bedroom Home

RoomDimensions (ft)Dimensions (m)
Kitchen / Dining / Sitting Area31’2″ x 18’0″9.5m x 5.5m
Reception Room18’4″ x 13’9″5.6m x 4.2m
Bedroom 1 with En-suite11’9″ x 19’0″3.6m x 5.8m
Bedroom 2 with En-suite9’2″ x 14’1″2.8m x 4.3m
Bedroom 38’10” x 9’10”2.7m x 3m
Main Bathroom7’10” x 5’10”2.4m x 1.8m

Plot 8 – Garden Cottage – 2 Bedroom Detached Home

(New Build)

RoomDimensions (ft)Dimensions (m)
Kitchen / Diner / Lounge23.6 ft x 15 ft7.2m x 4.6m
Ground Floor Bedroom12.7 ft x 13.4 ft3.9m x 4.1m
First Floor Bedroom13.7 ft x 14.76 ft4.2m x 4.5m



  • Bespoke, Handcrafted Kitchens using quality wood and paint finish
  • Quartz worktops and up-stands
  • Appliances including integrated NEFF fridge/freezer and dishwasher
  • NEFF combination oven/ microwave, single oven and hob


Family Bathrooms and En-suites

  • Ideal standard sanitary ware
  • Hansgrohe or similar chrome taps and bath fillers
  • Hansgrohe or similar thermostatic shower fittings
  • Full height tiling to shower and bath areas
  • Fitted wall cupboards and illuminated mirrors
  • Heated towel rails
  • Electric underfloor heating (where suitable)

General Features

  • TV and master BT point
  • Fully refurbished and draft proofed period windows and doors
  • Period style panelled internal doors
  • Matt paint finish to walls and eggshell paint finish to woodwork
  • Period style radiators throughout
  • Fully fitted alarm system
  • Private parking
  • Fully landscaped communal gardens

The details contained in this specification are for guidance only. All images depicted are indicative of the types of specification that will be available. These particulars should not be relied upon as accurately describing any of the specific matters described by an order under the Property Misdescriptions Act 1991. Netherdown Ltd reserves the right to change the specification and design. Purchasers should contact our sales agent for up-to-date specifications and details. This information does not constitute a contract, part of a contract or warranty.

History of the house

Guessens has a very extensive history which we have summarised below.

Guessens lies within Welwyn Conservation Area (CA), an area of archaeological significance, which incorporates the substantial Iron Age and Romano-British settlements at Welwyn. In 2012 the remains of a post-medieval, possible yard surface, near the former stable yard of Guessens were revealed, establishing the post-medieval use of the site.

It is thought that John de Gessings owned a house on the site, as long ago as 1324 and that Guessens name derives from its first owner. Guessens was probably a farm until the middle of the 16th century, when the first house on the site was rebuilt in the late Elizabethan or early Stuart period. It was built as a timber-framed building with two storeys, one room deep, and the roof timbers from this time are still to be seen in the top floor.

In 1685 Guessens was sold to Samuel Monesty. This family were Puritans as well as Richard Meade, landlord of the Swan, now the Wellington. Samuel Monesty was granted a licence to use Guessens “as a place of meeting and assembly for religious worship.“ In 1718 the house was sold, by order of court, to pay Samuel debts and the freehold came into possession of Robert Gelsthorpe, then in 1749 it was sold to Dr Edward Young (1683 – 1765), the poet-rector of St Mary’s Parish Church. During Edward Young’s occupation the house was extensively modernised and enlarged, especially at the back where one story was added, including a fine well staircase and a large first floor room still with its original panelling. Many other rooms, are its finest features even to the present day. The Director’s study is believed to be Young’s study and is still very much in its original state. Upon his death in 1765 Guessens was left to his only son, Frederick Young, who lived in Guessens until his death in 1788.

It appears that a miller named Thomas Crawley succeeded Frederick Young and again made other changes to Guessens when the front was heightened by a storey and the whole facade stuccoed. Older windows were replaced by new ones and some interior decoration took place. In 1812 the renowned classical scholar Henry Fynes-Clinton, who was a descendant of Henry II, Earl of Newcastle-under-Lyme, bought Guessens. During his time a service wing was added on the south side, as well as large bay windows at the back of the house. The former stables were probably also replaced by new ones at this time.

After Henry Fynes-Clinton’s death in 1852 Guessens was bought by George Edward Oering, Lord of the ancient manor of Lockleys, who seemed to have been one of the most colourful characters of the 19th century. His daughter, Rosa Georgina Neall inherited Lockleys in 1911 and the last tenant of the Lockleys’ estate was the widow of William Douro Hoare, a member of an old banking family and a director of the Bank of England. In his time a large room, the ballroom, joining the main house with the stables, was erected by ’Jim’ Adams. This room now serves as the conference room for larger meetings and conferences.

The Welwyn Garden City Company bought Guessens in 1936 and leased it to the Plastics Division of ICI and also Lord Beeching. In 1955 the Welwyn Evangelical Church bought Guessens at the instigation of the Rev Ian Tait who turned Guessens into a manse as well as a home for students and other local young men.
Another change came in 1981 when the European Mission Fellowship relocated their headquarters from Watford to Guessens. Since then, it has been used as its headquarters as well as for the 12 or so students of the School of Biblical Studies. Subsequently, more than 300 students from the majority of European countries and even beyond have finished the course which covers all aspects of theology in short of 180 days. Many of these students are serving as pastors, are in leadership positions in their churches or run humanitarian aids.

We are proud to be part of the Land and New Homes Network that is a high-profile national association that’s helping to drive policy and changing our industry for the better. We utilise their training, opportunities, lead generation and support.