ADU construction
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The document outlines the steps involved in constructing an accessory dwelling unit (ADU) from start to finish over a period of 5 months, including: 1) Excavation and pouring of the concrete foundation walls and slab, installing utilities like sewer, water, electrical, and gas. 2) Framing of the structure, installing windows, doors, roof, sheathing, and mechanical systems like plumbing and HVAC. 3) Adding insulation, drywall, siding, floors, tiles, cabinets, and finish work. 4) Obtaining occupancy permit and modifications thereafter.
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ADU construction
- 1. to reduce the energy footprint of a home’s occupants: Walkability Siting on the lot The three most significant factors Home size Building envelope and systems Air Sealing Insulation Heating & Cooling system Location Microneighborhood
- 2. Accessory Dwelling Unit: Construction Start to Finish April 2011- Septemeber 2011
- 4. Integrated Design Process For an ADU, the IDP should ideally include people who play the following roles: homeowner, architect, builder, plumber, electrician, mechanical, landscaper
- 5. 3D Model Contact Nathan Korhmann (nkohrmann@gmail.com)
- 6. Excavation
- 9. Gravel
- 10. Vapor Barrier
- 11. Rigid Foam, Rebar, and Pex Tubing for Radiant Heat
- 12. Concrete Slab
- 13. Utilities: Sewer and drainage pipes Sewer extends from main house for ADUs
- 14. Utilities: Water Water extends from main house for ADUs
- 15. Utilities: Electrical Electric varies: sometimes you may add a subpanel to the main house to serve the ADU. Sometime, you’ll have to add a new “service drop” directly from the street to serve to the ADU
- 16. Utilities: Gas For gas, your gas company will add a 2nd meter and you’ll have to run a new gas line from it to serve the ADU
- 17. Framing
- 18. Framing: Windows and doors
- 19. Framing: Stairs
- 20. Framing: Roof
- 22. Roofing
- 23. Weather and Air Resistant Barrier
- 24. Rough Plumbing
- 25. Mechanical: (eg. Heat Recovery Ventilator)
- 26. Mechanical: Tankless Water Heater COLD WATER IN HOT WATER OUT
- 29. Air Sealing
- 31. Insulation: Closed Cell Spray Foam
- 34. Drywall: Mudding, Sanding, Priming
- 35. Shingles & Rain Screen
- 36. Siding
- 37. Staining and Sealing Concrete Flooring
- 38. Reused Flooring
- 39. Tiling
- 40. Painting
- 42. Finish Plumbing
- 43. Finish Electrical and Lighting
- 44. Certificate of Occupancy and Moving In
- 45. Modifications
- 46. Questions
Editor's Notes
- Excavation Gravel Rigid Foam Water Barrier Foundation Concrete Forms Concrete Pour Foundation Wall Rigid Foam Slab Utilities Sewer, Electrical, Water, Gas Framing Balloon Framing Thermal Bridging, Advanced Framing Sheathing Roof Stairs Windows Roofing Weather Resistant Barrier Rain Screen Rough Plumbing Mechanical Radon mitigation Lighting and Electrical Air Sealing Insulation Foam, Blown in Insulation, Batts Drywall Sheetrock, Mudding, Sanding, Primer Siding Flooring Tiling Painting Cabinets, Shelving Finish Plumbing Finish Electrical and Lighting Certificate of Occupancy Modifications Moving In
- Brainstorm with other funder/executors Talk to City Planner Rough sketch some ideas with executors/friends Interview architects (test them with some questions from today) What are a couple things that you would do to make this space feel and act bigger? (tall ceilings, join living/dining room, high windows, cutting out hallways, coupling functionality) Find builders and subs (ideally, you want to have identified a builder, plumber, mechanical, electrical subcontractor) Architect draws up schematics for consideration Have meeting- talk through design goals Schematic refinement 3D model Develop drawing for City Permit process- 10 days for New construction, then another 10 days for corrections