ROMBYour partner in structure and building advice
From the first assessment to structural calculations, drawings and permit — for renovations and small-scale building projects in and around Rotterdam.
Our services
Structure and building design under one roof, coordinated with your contractor and the permit.
Structural work for renovations
Structural calculations and drawings for extensions, roof terraces and wall openings with steel beams and portal frames.
Read more →Removing a load-bearing wall
Structural calculation, structural drawing and steel design for a safe opening — from beam to foundation.
Read more →Building an annex
From design and building drawings to foundation, steel structure, façade opening and permit guidance.
Read more →Building a rear extension
Enlarge your living room or kitchen: opening the rear wall with a steel beam or portal frame, foundation, floor and roof.
Read more →Building a roof extension
An extra storey on your home: checking floor, load-bearing walls and foundation, steelwork and roof.
Read more →Architectural drawings
Surveying and digitising the existing and new situation, floor plans, cross-sections and details.
Read more →Permit & advice
Guidance on the building permit and the technical documents for the municipality under the Dutch Environment Act and the Bbl.
Part of every projectWhy ROMB
The structure becomes part of the design from the start — not fitted in afterwards.
Structure and building design
Architectural design and structural design are coordinated within the same project.
From assessment to execution
From the first assessment of the existing home to calculations, drawings and permit guidance.
Clear for your contractor
Clear structural drawings and calculations, so contractors use the same starting points for their quotation.
Based in Rotterdam
Working on private renovations and small-scale building projects in and around Rotterdam.
Planning a renovation or extension?
Would you like to know what is structurally possible, which foundation or steel structure is needed, or which drawings you need before requesting quotations?
Send us the address, a few photos, available drawings and the desired setup. We will assess which architectural and structural work is needed.