For contractors, architects, developers and homeowners
Structural, architectural and MEP design for US and UK projects
Send your plans and get calculations, drawings and BIM models from one team, ready for permit, approval or construction.
- 2,100+
- Projects completed
- 1,700+
- Permits supported
- 116+
- Clients served
- 7+
- Years in practice
What we do
One team for every discipline
Structure, architecture and services stay coordinated, so your project does not lose continuity between consultants.
Structural Engineering
Steel, concrete and timber design, calculations and details for residential, commercial and industrial buildings.
Learn moreArchitectural Design
Custom home plans, permit drawings and full construction documentation, from first sketch to final set.
Learn moreMEP Design
HVAC, plumbing, electrical and fire protection design, coordinated in BIM to avoid problems on site.
Learn moreBIM & 3D Modeling
Building information models, clash detection and construction sequencing for coordinated delivery.
Learn moreConstruction Estimating
Detailed quantity takeoffs and cost estimates to help contractors bid with confidence.
Learn moreNot sure what you need?
See how the services fit together, or send us your project and we will tell you.
All servicesWhere we work
Set up for your location
United States
Design and engineering support for US projects
- Custom home plans
- Structural design and calculations
- BIM coordination
- Takeoffs and estimates
United Kingdom
Structural calculations and design support for UK projects
- Loft conversions and extensions
- Structural design support
- Structural drafting
- Estimating
In New Zealand or Australia? Visit defteng.co.nz
Portfolio
Selected projects
3DStructural · Industrial
Industrial Portal Frame
Multi-bay portal frame shed with engineer-designed connections and a full foundation package.
3DStructural · Residential
Residential Roof Structure
Timber roof framing with truss design, purlin layout and erection sequence.
3DStructural · Commercial
Commercial Steel Frame
Steel portal frame for a commercial facility with mezzanine and cladding details.
How it works
From brief to drawings, all online
Send your brief
Share drawings, photos or a rough sketch, plus the site location and what you need the package to do.
Get a quote
We review the scope and reply with a quote and timeline within 1 business day.
Design and review
We develop the design with your input. Drawings and calculations are checked internally before they reach you.
Receive the package
Final documents arrive in the formats you need, with revisions handled until they are ready to submit or build from.
Ready to start your project?
Send your drawings or a short description. We reply with a quote within 1 business day.