Building an Accessory Dwelling Unit is not procedurally different than building a new house. This slideshow shows the building process step by step.

1. Accessory Dwelling Unit: Construction Start to Finish April 2011-Septemeber 2011

2. 3D Model

3. Excavation

4. Excavation

5. Excavation

6. Excavation

7. Concrete Forms

8. Concrete Foundation Walls

9. Gravel

10. Vapor Barrier

11. Rigid Foam, Rebar, and Pex Tubing for Radiant Heat

12. Concrete Slab

13. Utilities: Sewer and drainage pipes

14. Utilities: Water

15. Utilities: Electrical

16. Utilities: Gas

17. Platform Framing

18. Balloon Framing

19. Framing: Windows

20. Framing: Stairs

21. Framing: Roof

22. Framing: Sheathing

23. Roofing

24. Weather and Air Resistant Barrier

25. Rough Plumbing

26. Mechanical: (eg. Heat Recovery Ventilator)

27. Mechanical: Tankless Water Heater COLD WATER IN HOT WATER OUT

28. Mechanical: Radon Mitigation

29. Lighting and Electric

30. Air Sealing

31. Insulation: Batts

32. Insulation: Closed Cell Spray Foam

33. Insulation: Blown in

34. Drywall (aka Sheetrock)

35. Drywall: Mudding, Sanding, Priming

36. Shingles & Rain Screen

37. Siding

38. Staining and Sealing Concrete Flooring

39. Reused Flooring

40. Tiling

41. Painting

42. Cabinets & Shelving

43. Finish Plumbing

44. Finish Electrical and Lighting

45. Certificate of Occupancy and Moving In

46. Modifications

47. Questions

48. Questions