LSF members are cut in the factory to a ±2 mm tolerance.
From architectural design and structural calculation to fabrication and delivery — one engineered, integrated path built on LSF.
Who we are
Paya LSF is the specialist brand of Paya Rasa Sana Co. for the design, calculation, consulting and construction of light steel frame (LSF) structures. From architectural design and structural calculation to component supply and delivery, the build is run as one integrated, specialist process.
What we build
More about PAYA LSFSelected work
Freedom in design, with maximum use of interior space
Ferdows Villa, 65 m² in floor area, was designed and built to make the most of its usable interior space. The architectural form and the LSF structural system were developed together, keeping the plan simple and the interior flexible and practical.
Making the most of the interior
A structure that follows the plan
More space, at a small scale
Architectural design, structural calculation and LSF construction
Sepidar Villa is an 85 m² two-storey villa with an A-Frame form, whose architecture and structural system were developed together. Here, LSF was used to shape the architectural form precisely and to build a light, engineered structure.
The A-Frame form called for close coordination between architecture and structure.
LSF was chosen to build the A-Frame form precisely.
Architecture and structure took shape as one.
An 81 m² villa, built fast with LSF
Abad Villa is an 81 m² project outside the city limits, built with an LSF structural system. Limited access to the site and the need for a fast build made a light, assemble-on-site system the right choice.
LSF made it possible to transport the structure and assemble it quickly on site.
An 81 m² villa with a light, site-assembled structure was built.
An engineered solution for building in a mountain climate
Shahrokh Villa is an 85 m² villa in a mountain area, designed and built with an LSF structural system. The climate, the cold and the need for a precisely built structure were the main factors in choosing the system and designing the project.
LSF was chosen for a light, precise structure suited to the project's conditions.
Architecture, structure and climate requirements came together in one solution.
News & events
6–7October 2026
Memorial Union, University of Wisconsin–Madison, USA
How PAYA LSF builds
Scroll over the stages, or pick one.
Architecture review, structural calculation and the technical brief — then a precise structural model with fabrication and assembly drawings.
Galvanized members are cut to the shop drawings, sorted and shipped in assembly order, then raised with standard fixings.
Walls, roof, insulation, services and finishes go in.
Final checks, finishing touches, and the building is ready for use.
Why LSF
Light steel framing makes the parts before they reach site — the result is a faster, more precise build.
Build time drops sharply compared with conventional methods: projects finish in weeks, not months.
Keeps foundations to a minimum while delivering more strength at a lower cost.
Suited to urban construction and ideal for remote, hard-to-reach projects.
The best way to add storeys to an existing building, with no strengthening and no damage to the existing building.
An LSF wall with the right insulation reduces heat transfer and helps improve the building’s energy performance.
Steel structures perform very well in earthquakes, beyond what building codes require.
Minimal waste and no wet work: a cleaner site with less environmental impact.
Electrical and plumbing runs can be laid out inside LSF walls; with the routes and openings planned ahead, the services are coordinated with the structure from the start.
Services
Design, engineering and delivery under one roof — for projects that have to be precise, on time and dependable.
Related articles
FAQ
Short answers to what usually comes up before an LSF project begins. Something else on your mind? Talk to us directly.
Ask your questionIt varies with size and complexity, but LSF construction is usually far faster than traditional methods.
Villa Design and ConstructionWe handle the whole path—architectural design, structural calculation, construction, and handover—as one process.
Villa Design and ConstructionYes—light weight and prepared parts make building in urban, rural, and hard-to-access areas possible.
Villa Design and ConstructionYes—LSF's light structure lets you add a floor without full demolition, provided the existing structure's calculations allow it.
Floor AdditionsFrom the initial review and structural-system choice through the build stages, we're with you.
Consulting & Technical SupervisionPrecise decisions before construction and fewer errors and reworks help control time and cost.
Consulting & Technical SupervisionBring your site, idea or building problem to the Paya team.
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PAYA LSF
Specialist design, calculation and construction of LSF structures
