Strom is a collection of pre-designed architectural homes by award-winning architect Magnus Ström — site-built to order and delivered turnkey. Not a prefab house. Not bespoke architecture. A third category.

Every home is fully resolved before you buy it. Every material, every system, every detail — specified by the architect, owned by Strom. You choose your size and elevation level. We build. You move in.

Our homes start at 6 995 000 kr including VAT.

Until now, if you wanted a home of genuine architectural quality, you had one real option: bespoke architecture — exceptional, but slow, risky, and expensive. The only alternative was a prefab house — designed for budget and volume, not for design, architecture, or how you actually live.

Strom exists because we believe there is a better way. We have done the complex work once, at the highest level, and made it available as a small number of pre-designed homes.

Strom was founded by property developer Ola Mattisson and architect Magnus Ström, who own the company in equal parts.

The division of roles is clear. Magnus is responsible for the architecture — every home, every proportion, every specification. Ola, as property developer, is responsible for the business: land, contracting, finances, and delivery. Ola is your counterpart throughout the project.

The combination is the very idea behind Strom: architecture at the highest level, delivered with a developer's discipline on price, time, and execution.

Magnus Ström is the architect behind Strom. Born and raised in Sweden, he moved to England to study architecture and founded Ström Architects in 2010, based in the New Forest, Hampshire. Growing up surrounded by Swedish modernism gave him a deep belief that function and beauty belong together — a philosophy that runs through every Strom home.

His work is guided by a belief in quiet luxury — not opulence, but space, light, privacy, craftsmanship, and calm, and the conviction that the best homes earn their presence rather than perform it.

Over the past two decades he has designed and delivered exceptional private homes across ten countries, working from his studios in the UK and Caribbean. The practice is multi-award-winning and recognised both nationally and internationally, twice winning House of the Year at the British Homes Awards, with work published in Wallpaper* and Dezeen.

Ola Mattisson is the property developer behind Strom. Over the past decade he has built high-end private residences in Stockholm's most sought-after areas, winning a Building of the Year award and the cover of Residence magazine.

An entrepreneur and business leader, he has held CEO and senior roles across finance, e-commerce, and digital media, latterly as a partner at Eidra, a management consultancy specialising in digital transformation.

Magnus brings the architecture. Ola brings the brand and the business — the digital, the commercial, and the relationship with every client. Strom is their shared belief that architecture of this standard need not be a one-off — that it can be delivered as a product, built to a fixed standard rather than reinvented each time.

Strom is for those who have always wanted a home of genuine architectural quality — and who understand that quality is worth paying for. Our homes start at 6 995 000 kr.

If you are comparing us to prefab houses, we are probably not the right fit. If you have dreamed of an architect-designed home but found the process too complex, too slow, or too expensive — that is exactly the problem we built Strom to solve. You get the architecture you always wanted, without the years of your life it would otherwise take.

Yes. We believe the best way to understand what Strom delivers is to see it in person — not in renderings or photographs, but at an active project, where you can walk the spaces, assess the construction standard, and understand what our specification actually means in practice.

We invite serious buyers to visit an active project. Request an introduction and we will arrange it.

Three. Each one a fully resolved architectural design — not a starting point, not a template, but a complete home resolved to construction level by Magnus Ström.

Type 1 is a single-storey home available in 2, 3 or 4 bedrooms — from 127 to 173 m² living area. Clean, linear, and adaptable to a wide range of plots.

Type 3 is a single-storey L-shaped home available in 3 or 4 bedrooms — from 171 to 186 m² living area. The L-form creates natural separation between living and sleeping zones, and frames outdoor space with architectural intention.

Type 5 is a two-storey home with 5 bedrooms — 224 m² living area plus 64 m² of ancillary space including garage and carport. For those who want more — more space, more presence, more home.

More models will be developed as the business grows.

Strom homes range from 126 to 224 m² living area — sizes that allow genuine architectural expression without wasted space. Every square metre is resolved by the architect.

Type 1

Type 3

Type 5

BYA (byggnadsarea) is the key figure for plots governed by a detailed development plan (detaljplan). If your plot has a BYA restriction, contact us and we will confirm compatibility.

The plans are architecturally fixed — and that is precisely what makes Strom possible, and what guarantees the result.

Every Strom home has been resolved in full by Magnus Ström — every proportion, every relationship between spaces, every detail. Changing the plan would mean unravelling that resolution. The integrity of the architecture is not a constraint we impose on you. It is the reason the home looks and feels the way it does.

What you can do is choose the size that fits your life, and elevate Design, Comfort and Systems to make it fully yours.

Type 3 offers layout options within its L-shaped form. And if you want something beyond what Strom offers, we can refer you to Ström Architects (https://www.stromarchitects.com) for a fully bespoke commission — the same architectural practice, but as a custom project.

Every material, every finish, every product has already been selected by Magnus Ström. This is not a limitation — it is one of the most valuable things Strom offers.

Magnus Ström has spent decades selecting materials and specifying products for exceptional private homes. He knows which combinations work — visually, practically, and over time. The specification in every Strom home is the distillation of that experience. Not a mood board. Not a guess. A considered set of decisions made by someone who has done this at the highest level, again and again.

Designing a home from scratch means thousands of decisions. Floor finishes, wall treatments, window frames, kitchen fronts, tap fittings, door handles, lighting positions — each one an opportunity to delay the project, second-guess yourself, and increase the cost. Most people find this process exhausting. Many make decisions they later regret.

With Strom, that work is already done. What you choose is your size, and whether to elevate Design, Comfort or Systems. Within that, the architecture is resolved — coherent, considered, and complete.

What you cannot do is substitute individual products or specify something outside the Strom system. This is by design. It is what guarantees the architectural integrity of the result.

Every Strom home comes in two levels — Included and Elevated.

Included is not a starting point or a base model. It is a complete, architect-specified home — Schüco triple-glazed aluminium windows, Strom Kitchen with Siemens iQ700 appliances, single-plank engineered oak flooring, NIBE heat pump, Plejd smart lighting, and more. Every product selected by Magnus Ström. Every detail resolved. A specification that sets a standard most homes never reach.

Elevated goes further. Design, Comfort and Systems can each be elevated independently — choose one, two, or all three. Each deepens a different dimension of the home. The price for each elevation is fixed and transparent, shown on our website before you make any decision.

Energy efficiency is not an afterthought in a Strom home — it is designed in from the start.

The building envelope is built to a standard well above minimum requirements. Walls are constructed with a 378 mm double-stud frame with 215 mm mineral wool insulation, achieving a U-value of approximately 0.15–0.18 W/m²K. The concrete slab sits on 300 mm of cellular plastic insulation. The roof carries generous insulation throughout. Triple-glazed windows with thermally broken aluminium frames complete the envelope.

Included specification features a NIBE air-source heat pump with integrated mechanical ventilation and heat recovery, and waterborne underfloor heating in all bathrooms.

Comfort Elevated adds a NIBE ground source heat pump — drawing energy from the ground for significantly lower running costs and more consistent performance year-round.

Site-built. Every Strom home is constructed on your plot, working to our own architectural drawings, structural calculations, electrical schematics, and full build specification. We own every document and set the standard at every stage.

Site-building is the only way to achieve architectural quality without compromise. Every detail is executed in its final context — adapted to your plot, crafted to our specification, inspected throughout. It is how every exceptional home in the world is built.

Factory-made construction, by contrast, is standardised by definition. The same modules, the same connections, the same limitations — regardless of plot, preference, or ambition. It is a different product for a different purpose.

We work with selected building contractors appointed for each project, across Sweden and our international markets. Strom owns all technical documentation and specifications — the contractor builds to our standard, not theirs. The same architectural quality, the same specification, the same result — whether your plot is in Stockholm, the Swedish countryside, the UK, or Australia. One point of responsibility from start to finish.

You purchase a turnkey home from Strom under a total contract. In Sweden, this is called a totalentreprenad — governed by the standard framework ABT 06, which regulates responsibilities, timelines, and guarantees. As a private buyer in Sweden you are also protected by the Consumer Services Act (konsumenttjänstlagen), which is mandatory and always applies in your favour.

For projects outside Sweden, the contract structure follows the applicable laws and standards of the relevant country. Contact us to discuss the specifics for your location.

The key benefit regardless of location: you have one agreement, one point of contact, and one party accountable for the finished result.

Nine months from approved building permit and completed groundworks to move-in. That is the construction time for Type 1 and Type 3. Type 5 takes twelve months.

To put that in context: a fully bespoke architectural home typically takes 2–4 years from first conversation to move-in — often longer. The design phase alone can take 1–2 years. With Strom, the design is already done. The drawings exist. The specifications are written. The moment the permit is approved and the site is prepared, we build.

The planning and permit process varies by location and typically adds 3–6 months before construction begins. Total time from first conversation to move-in is typically 13–18 months for Type 1 and Type 3, and 16–21 months for Type 5.

We deliver across Sweden and internationally. Our primary markets are Sweden, the United Kingdom, Australia, and the USA — reflecting the reach of Ström Architects and the demand for architectural homes at this level.

If your plot is outside these markets, contact us. We assess each international project individually and will tell you honestly whether it is feasible.

Building a home always carries risk. The question is who carries it.

With a traditional bespoke project, the risk is distributed across multiple parties — architect, structural engineer, contractor, subcontractors. When something goes wrong, each party points to another. You, as the client, are left navigating between them.

With Strom, the responsibility is ours. We own every drawing, every specification, every standard. If something is not built to our specification, we resolve it. If there is a conflict between disciplines, we resolve it. You have one point of contact and one party accountable for the finished result — from the day we break ground to the day you move in.

This is one of the most important things a total contract delivers. And it is one of the reasons we build this way.

Yes. Accessibility affects build costs. Material transport, crane logistics, and coordination to difficult locations — such as island sites in the Swedish archipelago — add cost that varies significantly by site.

This is not a reason not to build. We have experience with complex and remote sites, and we assess each one individually. Costs are specified transparently in your proposal before you commit to anything.

Strom homes start at 6 995 000 kr including VAT — for a fully architect-specified, site-built, turnkey home.

The price depends on which Type you choose, how many bedrooms, and whether you elevate Design, Comfort or Systems. Every price is fixed and transparent — no surprises, no variations, no negotiation. You know exactly what you are getting before you sign anything.

You can configure your home and see a complete price on our website.

Everything needed to move in — designed and specified by Magnus Ström.

Included as standard: Schüco triple-glazed aluminium windows, Strom Kitchen built by our own joinery, Siemens iQ700 appliances throughout, Bora induction hob with integrated downdraft, Mora Inxx II taps throughout, Unidrain Highline Custom linear drains, single-plank engineered oak flooring, waterborne underfloor heating in all bathrooms, NIBE air-source heat pump with mechanical ventilation and heat recovery, 11 kW EV charger, and Plejd smart lighting control.

This is not a base specification. It is a complete, considered home — every product selected for its quality, its longevity, and its place in the architecture. A prefab house at a similar price point offers standard windows, standard appliances, no architectural kitchen, and no architect. The difference is not marginal. It is fundamental.

The price includes the complete house including the ground-bearing concrete slab. Site preparation, excavation, planning permit fees, and connection to water, sewage and electricity are not included and vary by plot.

Type 5 includes a garage and carport as part of the building. For all other Types, parking and storage can be discussed as additions.

Pool, guest house, landscaping, and outdoor areas are not included in the Strom home price. We understand that for many of our buyers, the outdoor environment is as important as the home itself. Pool, terrace, and garden can be added to any Strom project — contact us to discuss the possibilities for your plot.

A Strom home costs significantly more than a prefab house — and significantly less than a fully bespoke architectural commission.

Prefab houses are cheaper because they are designed for volume and cost, not for architecture. The savings come from standardisation, factory production, and specification choices that prioritise budget over quality. You get what you pay for.

A fully bespoke architectural commission is more expensive because every drawing, every calculation, every decision is made from scratch — charged to your project, by multiple specialists, over multiple years. The result can be exceptional. The process is slow, risky, and expensive.

At approximately 55 000–60 000 kr per m² including VAT, Strom sits between the two — but the comparison to prefab is almost meaningless. The architecture, the specification, and the result are in a different category entirely. The more relevant comparison is to bespoke, where Strom typically costs half as much and takes a fraction of the time.

There is one more factor. Every time we build a Strom home, we get better at it. The drawings are refined. The contractors know the specification. The process runs more efficiently. Over time, that accumulated experience translates into higher quality and lower cost — passed on to you.

What that money buys is a house designed and coordinated to a standard most homes never reach — with nothing left for you to resolve or source yourself.

Every decision is already made by an award-winning architect. The windows are Schüco triple-glazed aluminium. The kitchen is built by our own joinery. The appliances are Siemens iQ700 and Bora. Every product is chosen by Magnus Ström for its design, its quality, and how it belongs in the architecture. The value is the coherence — every part considered against every other. That is exactly what a cheaper house leaves out.

It is achievable at this price because the design work is done once and shared across every home we build, instead of paid for from scratch on a single commission. Each home we build makes us more efficient, and that is passed on to you.

Yes — and we will tell you exactly what they are before you commit to anything. That transparency is part of how we work.

The Strom home price covers the complete house — architecture, specification, and construction, delivered turnkey. Beyond that, there are three categories of additional cost.

Your plot. The land itself is not included. We can advise on what to look for in a plot and what to avoid — years of experience building on varied sites gives us a clear view of what works.

Groundworks. Site preparation, excavation, and connection to water, sewage, and electricity. This is the most variable cost in any home project and the one most buyers underestimate. The price depends on soil conditions, rock, distance to connections, and accessibility. A straightforward plot might cost 300 000–500 000 kr. A challenging site can cost significantly more. We will give you an honest assessment of your plot before you sign anything.

Groundworks is not part of the Strom total contract — which keeps your house price fixed and transparent regardless of site conditions. You can procure the groundworks contractor yourself, or we can manage the full procurement on your behalf for a 15% management fee. Either way, we advise on what a fair price looks like for your specific site.

Building permit fees. We prepare and submit the building permit application as part of the Strom service — this is included in the house price. The municipality's own fee, typically around 35 000 kr, is paid by you directly to the municipality.

Between the house price, your plot, and groundworks, you will have a complete picture of the total investment before you commit. No surprises — that is a promise.

Payment is structured around key construction milestones, with an initial deposit and a material downpayment at the start of construction. Every subsequent payment is made only when the corresponding stage is completed and verified.

• 10% at contract signing • 30% after approved start permit — this covers the ordering of materials with long lead times, including windows, facade, and fireplace, which are ordered at the start of construction • 10% after the concrete slab foundation is poured • 20% after completed shell — facade, walls, roof, and windows complete. The home is fully finished from the outside • 20% when floors are laid, walls painted, and doors installed — before kitchens, bathrooms, and wardrobes are fitted • 10% after completed and approved final inspection — when you move in

Because Strom homes are site-built, not factory-made, we do not need to lock up your money in advance production. With a typical prefab supplier, customers often pay 60–70% before the home is even assembled on site — because the factory needs to be financed. With Strom, you pay in line with real progress on your plot. This makes our payment structure genuinely more customer-friendly. The final 10% is held until formal sign-off. You do not pay in full until the home meets the agreed specification and you are ready to move in.

Yes. A Strom home is a site-built permanent dwelling and can be financed with a standard mortgage.

In Sweden, most buyers use a building credit (byggnadskreditiv) during construction — a temporary loan that covers payments as the build progresses. You pay interest only on the amount drawn, not the full loan. When the home is completed, approved, and valued, the building credit converts to a standard mortgage. Your bank will guide you through this process.

In the UK, Australia, and the USA, the equivalent is a construction loan or self-build mortgage. The principle is the same — a temporary facility during construction that converts to a standard mortgage on completion.

We recommend speaking to your bank early — ideally before you sign a contract with us. A bank with experience in new construction will make the process significantly smoother. Contact us if you would like guidance on financing in your market.

Ola Mattisson. As property developer and co-founder, he is your counterpart from first conversation to handover — contract, timeline, finances, and the decisions along the way go through him.

Magnus Ström is responsible for the architecture and the specification your home is built to, but you never need to coordinate between architect and builder — that is Strom's job, not yours.

One counterpart. One contract. One responsibility.

Strom — under a total contract, with a fixed price and a single agreement.

Operationally, delivery is led by Ola Mattisson, who has developed and delivered high-end private residences for over a decade. He procures the contractors, drives the build against the timeline, and is responsible for verifying every milestone before you pay.

Finally, the home is approved by an independent inspector against the specification — the final 10% is due only when everything is right.

No. With Strom, the hard work is already done.

The architecture is resolved. The engineering is complete. The materials are specified. The drawings exist. Every decision that would otherwise demand years of your time and a team of specialists to get right — has already been made by Magnus Ström and Ola Mattisson.

What you need to do is choose your Type, your size, and your elevation level. Then say go. We handle everything from there — managing the build, coordinating every discipline, and carrying the architectural intent through to the finished result. You receive invoices at each milestone, and you watch your home take shape.

No architect to manage. No engineers to coordinate. No material decisions to agonise over. No project management. Just a home, built to a standard you could not achieve on your own, delivered to your door.

The process is straightforward. Here is what it looks like from first conversation to moving in.

1. Request an introduction. We start with a conversation — a chance to get to know each other and understand whether Strom is the right fit for you. No commitment required.

2. Choose your home. On our website you can explore what is included and what each elevation adds — in specification and in price. There is no obligation to do this before we speak. Many buyers find it easier to go through it together with us, so we can explain what matters most at each level and help you understand what you would be choosing — or choosing not to have.

3. Contract. We prepare your contract with a fixed, transparent price. You know exactly what you are getting, what it costs, and when it will be delivered — before you sign anything. No surprises. No variables. Just a clear agreement between two parties who both want the same outcome: an exceptional home, delivered on time.

4. Building permit. We prepare and submit the building permit application on your behalf. In Sweden, municipalities are legally required to respond within 10 weeks of a complete application. Total time from first contact to approved permit is typically 3–6 months. In the UK, Australia, and the USA, planning timelines vary by location — we will guide you through the process for your market.

5. We break ground. Once the permit is approved, we procure the groundworks contractor and order all long lead-time materials — windows, facade, fireplace. Site preparation begins while materials are in production. Your home is being built.

6. Construction. Nine months from completed groundworks to move-in for Type 1 and Type 3, twelve months for Type 5. You receive updates at every milestone. Invoices are tied to real, verified progress — never to a factory schedule.

7. Final inspection and handover. An independent inspector approves the home against specification. The final 10% is due only when everything is right. Then you move in.

We will reach out within 1–2 business days.

We start with a conversation — a chance to get to know each other and understand what you are looking for. We will ask about your plot if you have one, your timeline, and what matters most to you in a home. You can ask us anything — about the homes, the process, the specification, or what it actually costs when everything is included.

If it feels like a good fit on both sides, we will walk you through the homes in detail — Type, size, and elevation level — so you leave with a clear picture of what your Strom home would look like and what it would cost. No commitment required at any stage.

Less time than you might think — and significantly less than a bespoke architectural project, where the design phase alone can take 1–2 years before a permit is even submitted.

With Strom, the drawings already exist. The moment you have a contract, we prepare and submit your application. In Sweden, municipalities are legally required to respond within 10 weeks of a complete application. Total time from first contact to approved permit is typically 3–6 months.

In the UK, Australia, and the USA, planning timelines vary by location. We will guide you through the process for your market.

Once the permit is approved and groundworks are complete, construction takes nine months for Type 1 and Type 3, twelve months for Type 5. Total time from first conversation to moving in: typically 13–18 months (16–21 for Type 5). That is not a long time to wait for a home designed by an award-winning architect, built to a specification most homes never reach.