Your drawing office, without the overhead
Structural design, detailing and takeoff services
Permit sets, MEP, Tekla steel and timber detailing, BIM and estimating from one remote team, so your crews never wait on drawings.
- 2,100+
- Projects completed
- 1,700+
- Permits supported
- 116+
- Clients served
- 7+
- Years in practice
What we do
Every drawing your project needs
Hand us a whole project, or just the discipline you are short on. Every service can be delivered on its own.
Structural Engineering
Steel, concrete and timber design with calculations and drawings, laid out for your engineer of record.
Learn moreArchitectural Design
Plans, elevations, sections and permit sets, from first concept to the final drawing set.
Learn moreMEP Design
HVAC, electrical and plumbing layouts and calculations, modeled and clash-checked in Revit.
Learn moreSteel Detailing (Tekla)
Tekla Structures models, connection design, GA and shop drawings for fabricators and steel contractors.
Learn moreTimber & LGS Detailing
Timber framing and FrameCAD light gauge steel detailing that frame and truss suppliers can build from.
Learn moreBIM & 3D Modeling
One federated Revit model, clash-checked across every discipline.
Learn moreEstimation & Takeoff
Quantity takeoffs, BOQs and cost estimates measured digitally, with every item marked up on the plan.
Learn moreNot sure where to start?
Send us your plans. We will scope it, price it and tell you what your approval body will ask for.
Send your plansEstimation and takeoff
Every quantity marked up and traceable
Real markups from recent US projects. Each item is measured on screen, colour-coded on the sheet and totalled, so you can check any number against the drawing.
TAKEOFF SUMMARY
| Item | Quantity |
|---|---|
| 3" shredded bark mulch | 5,466.3 SF |
| 8"-12" fieldstone over weed barrier | 14,680.4 SF |
| 4" steel edging | 1,321.9 LF |
| 3' dia. fieldstone boulder | 11 EA |
| 1" irrigation mainline, PVC Cl. 200 | 1,850.9 LF |
| 1" irrigation lateral line, PVC Cl. 200 | 2,828.0 LF |
| 1" automatic control valve | 22 EA |
12 hrs
Concept drawings
Architectural concept to confirm geometry and openings.
3 days
Full permit package
Structural drawings, calculations and permit set, in working days.
Next morning
Revision turnaround
Our day overlaps with UK hours and US mornings. Markups at close of play are back by morning.
Portfolio
Selected projects
Structural · Residential · Manhattan, New York
NYC Townhouse LGS Structural Set
LGS framing, wall panels and rebar detailing for a Manhattan townhouse, modeled in Revit.
Architecture · Commercial · Cumming, Georgia
Sydney Oaks Retail Development
An architectural approval set in Revit for Building 1 of a four-building retail development.
Architecture · Residential · Parker County, Texas
Texas Residence Permit Drawings
A Revit architectural permit set: plans, reflected ceiling plan, roof and elevations.
How it works
From your plans to finished drawings
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.
Designed to your local code, wherever you build
We work with clients worldwide. Our two largest markets are the United Kingdom and the United States. In New Zealand or Australia? Visit defteng.co.nz.
Start with a small trial project
Send us one job. We will return a clear scope, fee and timeline, then let the drawings make the case.