Included with every TDD Set
Mechanical, electrical, plumbing and 3D coordination—planned before construction begins.
The complete package
TDD carries the home beyond floor plans and elevations so major systems can be considered together instead of improvised in the field.
01 / Mechanical
Manual J load calculation, equipment sizing and a complete duct layout help establish a practical path before installation.
The image is an anonymized archival duct-layout sample—not a Manual J report or construction document.
02 / Electrical
Outlet, lighting, switching and panel locations are planned around how the home will actually be used.
03 / Plumbing
Fixture locations and supply and drain routes are considered before walls and floors are framed.
Watch sample walk-through04 / 3D
Walk every room before construction and resolve changes on screen rather than on site.
Open the 3D ViewerMechanical decisions start with the home and its actual loads—not a rule-of-thumb guess.
Decisions resolved before construction are easier to coordinate than field changes.
Installers receive a coordinated plan to work from instead of filling gaps on site.
TDD is a residential design and drafting firm, not a licensed architect or engineer. Our mechanical, electrical and plumbing plans are construction planning documents, not stamped engineering. Where your jurisdiction requires a licensed professional, our plans give them a detailed head start.