Company & Environment

We have refined Gemma into a first-class home in the seascapes of Sompasaari. High ceilings and windows, expansive views, cooling systems, and a rooftop sauna with terraces are examples of how we have elevated the living experience above the ordinary.

Open: Gemma Showroom

Welcome to the Gemma Showroom! You can explore the atmosphere of the area, materials, and furniture and interior design solutions.

As Oy Sompasaaren Gemma

Home design is a critical process: the apartment's location, floor plan and architecture, as well as high-quality materials and appliances, require living costs that pass even the most demanding calculations, so that life can flourish. We are proud to present Sompasaaren Gemma.

Sompasaaren Gemma

COMING SOON
Number of apartments 34 units
Estimated completion 2027
Number of rooms 2–5 rooms
Floor area 36.5–128 m²
Debt-free sales prices €239,000–€895,000
Land ownership City of Helsinki leasehold land

Refined solutions for quality living

Energy-efficient and environmentally friendly

Geothermal heating keeps energy costs moderate—did you know that geothermal heating can save approximately 30–60% on heating costs? In addition, solar panels have been installed on the roof, allowing Gemma to produce environmentally friendly energy.

Cooling air-source heat pumps

Living comfort is one of Gemma's highlights. We believe that you should be able to enjoy your home every day of the year and every moment of the day.

Higher ceilings and interior design possibilities

Natural light floods through large windows into rooms with above-average ceiling heights. In addition, well-designed floor plans ensure that furniture finds its place without unnecessary compromises.

The kitchen you have always dreamed of

Puustelli's magnificent kitchen cabinets and storage units embody modern design, strong material expertise, and quality.

Architectural masterpiece, as told by the architect

In the video, Architect Mikko Kämäräinen presents Gemma's most interesting details and explains what makes the building a true gem.

Surrounded by the sea, in the heart of Helsinki

Nature

Sea 20 m
Mustikkamaa beaches and sports fields 500 m
Korkeasaari Zoo 600 m

Services

Redi Shopping Centre 750 m
Sompasaari Daycare Centre 250 m
Kalasatama Primary School and Daycare Centre 600 m

Connections

Leisurely cycling to the city centre 10 min
By car to Ring Road III at 4:30 PM 38 min
By tram to the Railway Station even before the Merihaka Bridge tram service begins 21 min

Everything begins with location. Gemma stands in a seascape where, in addition to coastal outdoor routes, you have access to shops, restaurants and cafés, as well as numerous services. The nearest daycare centre is a quick and safe journey away, and the health centre and school are also within walking distance in Kalasatama.

You can reach the city centre quickly from your doorstep on foot or by bicycle. You can easily travel to the city centre from the tram stop right outside your door. Thanks to the new tram bridge opening soon, the upcoming Kalasatama metro renovation will not slow down your journey either.

Plot

Gemma is positioned on the plot to maximize natural light. The balconies offer magnificent evening sun, and the windows face southwest or west. The apartments are arranged so that all apartments and balconies have the best possible sea views.

Gemma construction stages

1.

Project announcement

03/26

Gemma has now been announced. Join the pre-registration list to be notified when reservations open.

In progress
2.

Pre-marketing

06/26

We present the first concept images of Gemma and open official pre-reservations. As a pre-registered member, you can select and reserve your seaside home 2 days before public sales begin. The reservation is not yet binding, but it secures your dream floor plan.

3.

Sales

autumn 2026

Official sales begin and RS documents are ready. At this stage, we complete a binding purchase agreement with you. By acting quickly in the early sales phase, you can still influence your home's interior materials and customize the details to suit your personal taste.

4.

Construction

autumn 2026

The foundation stone of Gemma is laid and a new landmark begins to rise on the Sompasaari shoreline. We closely monitor construction progress and regularly share updates from the site with you. You will also soon be able to visit your future home on our safe construction site tours.

5.

Move-in ready

2027-2028

The construction site falls silent and your new life by the sea begins. Before handing over the keys to your meticulously finished premium home, we conduct a thorough move-in inspection together with you. After that, the moving van can pull into the driveway – welcome home.

The uniqueness is revealed only from inside the building

Open your mind to the sea and step inside Gemma.

Rooftop sauna and terrace invite you to enjoy the views

The crown of the building is a magnificent rooftop sauna and event space with rooftop terraces. Host unforgettable celebrations or enjoy your own relaxing spa retreat with sea views.

Kerhotilat ja työskentelytilat

In addition to the sauna and rooftop terrace, the attic floor features a shared club room for residents and a separate workspace for remote working days.

You will see only carefully considered details

How does a window extending almost to the floor sound? Or higher ceiling heights? Underfloor heating instead of radiators? We have invested in the smallest details to ensure a first-class living experience.

The kitchen you have always dreamed of

Puustelli's magnificent kitchen cabinets represent uncompromising quality, where top-class functionality and aesthetics meet.

Our designers have created a style collection for the apartments, where materials create a magnificent and functional experience for every day

Valitse luonnollinen Basaltti, Kvartsi, Travertiini tai Smaragdi. Lataa ennakkomarkkinointiesite tai kysy lisää.

Functional common areas make everyday life simply easy

Everyday life is streamlined by the building's laundry room, storage facilities, bicycle storage and maintenance station, as well as separately available parking spaces.

The sea connects you to magnificent experiences

Here, the sea is not just a view, but part of your everyday life. It takes your family to enjoy exercise, nature, and well-being in an unprecedented way.

Restaurants, shops, and Redi Shopping Centre

Whatever you need, you do not have to go far. Redi Shopping Centre, restaurants, cafés and daily services, as well as numerous sports facilities, are all located nearby.

Meet your new neighbors of all kinds at Korkeasaari even every day

Along the newly opened Fiskens Bridge, you can visit Korkeasaari with an annual pass even every day. Did you know that winter offers a unique opportunity to see snow leopards, Siberian tigers, and camels in their active state?

At Mustikkamaa, you can play tennis, basketball, football, train at the outdoor gym, swim at sandy beaches, climb, jog, ski, skate—enjoy an active life

Mustikkamaa's green trails, beaches, and sports fields invite you to enjoy yourself. You will also find climbing, Tarzan slides, and adventure courses up to 12 meters high at Mustikkamaa—people come to Mustikkamaa from far away, and for good reason!

From Sompasaari, you can travel effortlessly in every direction

The tram runs from in front of the building across the new Merihaka Bridge quickly to Hakaniemi and the city centre, and smooth connections also take you easily to Pasila and throughout the capital region.

The area's own daycare centre, school, and health centre

The nearest daycare centre is located almost next door, and primary schools as well as the Kalasatama Health and Wellness Centre are within walking distance in Kalasatama.

Download the pre-marketing brochure

All property information, including apartments, design concepts, and company details – conveniently compiled in one package.

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    Showroom Now Open

    Gemma Showroom

    Experience Gemma More Vividly Today! Welcome to the Showroom to explore Gemma, where the atmosphere of a new district, high-quality materials, and carefully selected furniture and interior design solutions come together.

    Gemma Showroom

    Konttisatamankatu 8
    00540 Helsinki
    Book a viewing appointment at the showroom. A warm welcome!
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