The Quant Building

Location:
Walthamstow, London
Type:
New Build

In 2021 we were recommended to this developer by another client for whom we had completed a commercial to residential conversion back in 2016. They in turn had been recommended to us by yet another happy client the year before. We are very proud of the fact that so many of our projects come through recommendation as it’s a testament to the way others feel about the care we take in our work.

This was to be a high-end project, the construction of two new storeys atop an existing 4-storey building to contain 10 luxury penthouse apartments for sale, 5 of which would be duplexes with access to a spacious roof terrace, each with its own innovative electrically operated sliding glazed skybox.

Quality was vital on this project, but our starting point was not the best, with next to no plans to work from, just artist impressions from the marketing consultants the client had already instructed to sell the properties, and this was just the first of the challenges we faced on this project.

Photos below kindly provided by Churchill Estates.

PROJECT CHALLENGES

The path to transforming The Quant Building was fraught with hurdles, each demanding a unique solution:

  1. Navigating Incomplete Designs: We were initially provided with only a basic design framework and draft designs that required a lot of work and far more detail. We collaborated with the client’s design team on the main build plans, and then with specialist firms on the smoke and ventilation designs which were left incomplete. We refer to this as a challenge because you might expect more design clarity at the outset of a multimillion-pound project. However, the reality is that we regularly work with clients who need our help to turn their property visions into built reality, via the medium of completed sketches, renders and plans, so, while it was a challenge, it was an infinitely manageable one.
  2. Adapting to Regulatory Changes: The project’s timing coincided with the introduction of new smoke ventilation regulations. No description was provided by the project’s architect, so it was left to us to identify a workable solution that met regulatory needs and ensured occupant safety without compromise. We identified an existing unused dumb waiter shaft which met the size requirements for a compliant smoke shaft, but it was already full of various services, intercom controls, and numerous old concrete plinths projected out into the shaft. We had to reroute the utilities, investigate each plinth to ensure that its removal would not have a structural impact on the building and empty out the shaft. Then the space was fireproofed, extended up the two new storeys we’d built and new openings were created for smoke dampers. Five new bespoke AOV windows were also needed, communal spaces in the building required new smoke detectors and a smoke control system was installed. All this work had to be undertaken in collaboration with the occupiers of the 60 properties in the existing four storeys of the building as utilities had to be turned off and on and communal spaces were worked in.
  3. Maintaining Resident Harmony: The existing occupants of the building were a priority for us and our client. It was important to keep them onside as their collaboration was vital to keep to the deadline our client had set us at the outset of this project. We devised a plan to minimise disruption, scheduling work strictly between the hours of 8am and 6pm while most of the residents of the building were at work, minimising noise and craning in most materials to avoid bringing them through the building’s communal areas. It was a logistical ballet, but it was important to ensure a peaceful coexistence with those who lived there.

WHAT WAS INVOLVED

New Build Construction | Project Management | Sub-Contractor Coordination | Time Management | Working Within the Confines of the Existing Building

Constructing ten new luxury apartments five storeys up has the potential to be challenging at the best of times, but add to this minimal specifications and plans, an occupied building and a complex smoke and ventilation problem requiring an innovative solution and you have a recipe for delays and cost creep.

Thankfully, we’ve seen far worse, and our experience saw us through to a high-spec, high-quality completion, on time and within budget.

First, the existing felt roof needed to be removed, then a hot rolled steel structure was created to take the weight of the new storeys and a bespoke lightweight steel panel system was used to construct the framework of the new two storeys. External walls were built up, non-combustible cladding was added to the external walls of the upper floors, and a durable rubber roofing system was applied. A solution was found to achieve smoke and ventilation compliance as set out in the Challenges section above, electric sliding skyboxes were installed to give several of the apartments access to their roof garden, and the internal fitout ensured a high-end finish throughout. The five duplex apartments we built were designed to be like upside-down houses, with bedrooms on the lower floors so that the living spaces on the upper floors could take full advantage of the amazing views across London through the large triple-glazed windows that we installed for that very purpose. And the show flat was finished five months early so our client could ramp up their marketing efforts to sell the apartments ahead of the project’s completion.

The project involved: 

Extending existing building by two new storeys New smoke shaft, ventilation and AOV windows to comply with fire regulations Erect steel grid to support lightweight steel panel system to form new storeys
Removal and reinstatement of existing utilities within old service shaft New windows and internal doors Construct sliding skyboxes to give five apartments access to roof terraces
Roof gardens and terraces Internal fitout of all new apartments, including electrics, plumbing, sprinkler system, kitchens and bathrooms Build external walls and add non-combustible aluminium cladding
New fire escape stairs Engineered oak flooring, marble worktops, porcelain tiling and triple glazed aluminium windows The creation of 10 new luxury apartments

THE RESULTS

The duplex apartments were a big hit – spacious and unique with stunning views and a finish that included engineered oak flooring, hand-finished doors, contemporary architectural features and a roof terrace that separated them from others on the market. The single-story penthouses were just as chic and, it turned out, just as quick to sell, as the majority of the units were sold off plan prior to completion.

The project’s success, underscored by the rate at which they were sold, highlights the market’s appetite for thoughtfully designed, high-quality urban living spaces.

WE WOULD LOVE TO TALK

To book an appointment to discuss your project needs call us on 020 8361 1238 or use the form on our contact page to email us.