Archello Awards 2026 · Enter your projects before 30 September 2026
Archello Awards 2026 · Enter your projects before 30 September 2026

Addition

An overview of projects, products and exclusive articles about addition

Project • By WORKS OFFICE of Brian O'Brian ArchitectPrivate Houses

201 Symbiont

Symbiont is a partial renovation and two-storey addition to a modest brick semi-detached home located in Toronto, Ontario. Engaged in March 2022, the clients sought to expand their 1,417 square foot home to accommodate a growing family and make better use of an unusually wide lot. The completed work adds 847 square feet over two floors, bringing the above-grade total to 2,264 square feet. Linya Studios The house takes its name from the biological term, symbiont, which describes an organism that lives in close association with another for mutual benefit. Here, the addition does not imitate the existing house, nor does it dominate it. Instead, it wraps the original brick volume in a deliberate act of symbiosis. A corrugated steel shell... More

Project • By WDJARCHITECTENExhibition Centres

Netherlands Fotomuseum in Warehouse Santos

Pakhuis Santos:  Restoration and transformation into a new home of the Nederlands Fotomuseum Pakhuis Santos, located in Katendrecht, Rotterdam, was built 1901-1902 and designed by architects Kanters and Stok and commissioned by Blauwhoedenveem. It is an exceptional example of warehouse architecture from the period when the Rotterdam Port was in full development. It’s richly detailed façades, technologically advanced supporting structure, clear main form, and honest use of materials have largely remained intact. Iwan Baan Hans Wilschut After years of vacancy, the monumental warehouse has now been carefully restored and transformed. Where the building was originally intended as a design department store ‘sti... More

Project • By Project Architecture CompanyPrivate Houses

Weberhaus Babelsberg

The project is located in the listed historical district “Nowawes” in Potsdam-Babelsberg, a quarter that was created by the Prussian King Friedrich II starting in the middle of the 18th century. The aim was to attract Bohemian craftsmen, especially weavers and spinners. Simple cheap and functional houses were built, each with its own garden for self-sufficiency. These weavers' houses were single-storey with a gable roof, often built directly next to each other. Most of them had a small outbuilding in the courtyard. bullahuth fotografie bullahuth fotografie bullahuth fotografie bullahuth fotografie bullahuth fotografie Our task was to renovate and expand the old weaver's house and outbuilding while fulfi... More

Project • By Tim Bennetton ArchitectsPrivate Houses

Fairfield House

This home had a beautiful existing Poinciana tree in the back garden and a pair of clients with young children & a tendency towards exhibition – in response we designed this addition to provide a ‘theatre’ for the drama of growing up in a suburban home in mid inner city subtropical Brisbane. Shantanu Starick Shantanu Starick Shantanu Starick A typical early 20th century Queenslander (the local vernacular) the existing house suffered the usual problems of tacked on additions and uncovered decks that were functionally not very useful & had a poor relation to the outside landscape. The usual design response with a Queenslander is to build in under the home, this was considered but the final design choi... More

Project • By MAHDI MARABEOffices

DH1 offices

On a long and narrow site within an industrial area, we were commissioned to oversee the planning and design of a new office building. Mikaela Borstow At a later stage, the idea was raised to repurpose the existing structure of an old house on the site, transforming it into a modern, functional, and contemporary office facility. Mikaela Borstow first, the entire exterior envelope and interior partitions were demolished, retaining only the primary structural framework. Mikaela Borstow A steel-and-glass extension was introduced, anchored to a new exposed concrete wall that spans the full height of the building, together with upgraded infrastructure. Mikaela Borstow The result is a minimalist, modern building that faces... More

Project • By Backraum ArchitekturPrivate Houses

Pirate's Yacht

Extension for a bathing hut in Greifenstein on the Danube The allotment garden settlement “Greifenstein” next to a dead arm of the Danube River has a special charm. The first residents in the 1920s to 60s were very creative when building their bathing huts themselves. Since it is a flood area, all houses must be built on pillars. Christoph Panzer Christoph Panzer All of them were made of wood and the size was reduced to the essentials. Visitors are reminded of Peter Pan's Neverland or beach huts on the California coast.With our two-story extension to one of these huts, originally known as "pirate house", we want to honor this style. Portholes, big windows and terraces on all levels also make this hut a unique, imagin... More

Project • By Black RabbitPrivate Houses

Friar Tuck Residence

In this reimagined mid-century home, we embrace sustainability through authentic living design principles. By preserving the original single-story form, we create a sunlit courtyard using passive solar techniques. Prioritizing old-world natural materials and processes, we craft a healthy interior environment, devoid of artificial dyes, paints, and stains. Experience the luxury of simplicity, where the past converges with the present in perfect harmony with nature. Leonid Furmansky Leonid Furmansky Leonid Furmansky The home is designed to maximize its wooded surroundings by merging indoor and outdoor spaces. The front courtyard is encased in a Texas limestone privacy wall. It is seamlessly connected to the rear pool, deck, an... More

Project • By RO | ROCKETT DESIGNPrivate Houses

ASPEN | WEST END

In Aspen’s historic West End neighborhood, a classic 1890s Victorian-Era home is carefully restored to its original form after years of non-historic additions and renovations.  The Victorian is stabilized and reinforced, renovated, and linked to a contemporary addition and newly excavated lower-level basement. DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE DRAPER WHITE Inside the Victorian, the original compartmentalized layout is opened to dynamic, multi-story volumes and free-flowing circulation.  Unified by these volumes, a three-story floating wood stair overlooks the lower-level rec room below.  A double-height ki... More

Project • By Studio ST ArchitectsApartments

State Street Townhouse Renovation

A developer acquired 544 State Street and did a gut renovation of the Brooklyn townhouse after it had been vacant and neglected. Fortunately, through close analysis of zoning law, Studio ST found that the owner could enlarge the building by almost 50% by adding to each floor and excavating the cellar. Photographs Taken by Studio ST The townhouse was divided into four full floor apartments of simple and minimalist design. The typical layout of each includes an outdoor space; two bedrooms on the north side of the building; and the kitchen, dining room and bathrooms at the center. The new south side addition contains the living room and an office. Photographs Taken by Studio ST The cellar houses storage spaces, mechanical rooms, a... More

Project • By RESOLUTION: 4 ARCHITECTUREPrivate Houses

Fenimore Road Addition

This project is a renovation and addition to a house designed by Kaneji Domoto, a disciple of Frank Lloyd Wright who was both an architect and landscape architect. Resolution: 4 Architecture The challenge was to respect, and enhance when possible, the rather unique, sometimes quirky, existing details and Domoto’s sensitive attitude toward the landscape. Resolution: 4 Architecture The existing house felt woven in with its surroundings, cantilevering over a small stream and surrounded by green. At the same time, major upgrades and repairs were required to make the house functional, safe, and more energy efficient as a primary residence for a young family of four. Resolution: 4 Architecture A new carport replaces the ex... More

Project • By RESOLUTION: 4 ARCHITECTUREPrivate Houses

Amagansett Addition

The client, a bachelor, found that his existing house, located on a bluff overlooking Amagansett Beach, did not provide enough space for entertaining his many friends and family for the summer. The existing pool deck provides stunning panoramic views of the ocean, so capitalizing on the view and creating an easy flow from inside to outside was critical in the design of this 5,000 square-foot modular guest house addition. Caption The client’s brief called for the existing house to remain, so a large auto court was created to accommodate guest entry. Additionally, a new sitebuilt garage is cantilevered off the bluff. A large hydraulically-operated glass garage door and floor-to-ceiling glazing opposite the garage door maintain vie... More

Project • By DREAMERPrivate Houses

Terrace House 1

Terrace House 1 is a two-story rear addition to an existing terrace house driven by the desire for connectedness to family, the outdoors, and the creation of a retreat for a frontline medical worker. Context & Brief The project began when the client – a nurse – expressed a desire to upgrade her single-family detached residence to better meet her needs. Located in Ascot Vale, an inner-suburban locale approximately 6kms north-west of Melbourne, the existing home had been previously upgraded in the 90s but offered poor thermal comfort, little connection to the backyard, and a series of dark, under-utilised interior spaces.  As a frontline medical worker, often required to work nights, the client hoped for a nature-fille... More

Project • By HEDHospitals

Bed Tower Addition: Henry Ford Allegiance Health

As part of Henry Ford Allegiance’s master plan, they wanted to provide more high-quality, single-occupancy inpatient rooms to deliver additional privacy to patients. To make strides toward this goal, HED first evaluated post-occupancy reviews from existing patient floors and determined best practices for the new rooms. Despite having to work within a set structural grid, the Henry Ford Allegiance addition would be all single bed rooms, and each would allow any level of care. The HED team built full-size mock-ups of the patient rooms and conducted review sessions with both the caregivers and patient advocates to test the space and provide feedback, generating real-time design adjustments to the model.  The result is a univers... More

Project • By pentArchiPrivate Houses

Wight Mountain Addition

The client wish was to add a simple carport next to the main dwelling purely for practical reasons. With the idea of the new car abode next to the acreage residence the dilemma of where to enter the house needed to be re-addressed. This gave the opportunity to create different outdoor rooms and courtyards which were subsequently added to the perimeter. Between the new garage and an awning roof a new courtyard creates a gathering arrival area, with juxtaposing roof pitches. Thus a pseudo language was set up for the other stages of the intervention along the northern and southern elevations. The new outdoor dining room roof mimics the slope of the main dwelling roof with plenty of natural ventilation and low edge walls creating a cosy Al f... More

Project • By HEDHospitals

Beaumont West Emergency Department Expansion

One of the top five largest—and busiest—emergency departments in the county and the only Level I Trauma Center in Oakland Country, Beaumont Emergency Center is a critical provider of emergency medical care for the entire state of Michigan.    Facing an influx of patients that strained space, staff and resources, Beaumont’s redesign goals were clear: accommodate the largest possible number of exam and patient observation rooms; expedite intake and improve organization; and create space both within the existing footprint, and through a substantial new addition.    Immense by emergency center standards, the completed project nearly doubles the size of the previous facility increasing efficiency and org... More