Building an ADU
The step-by-step guide to planning, designing & building accessory dwelling units.
The step-by-step guide to planning, designing & building accessory dwelling units.
Course overview
FREE PREVIEWCourse overview
FREE PREVIEWIntroduction to Kol Peterson
Defining ADUs
Defining ADUs
Why ADUs: Macro trends driving ADU development
Why ADUs: Macro trends driving ADU development
Intro to regulations
Intro to regulations
Regulations, Part 1
Regulations, Part 1
Regulations, Part 2
Regulations, Part 2
Regulations, Part 3
Regulations, Part 3
Loopholes
Loopholes video
Loopholes
Special lecture for Portland residents- Portland Code Updates for 2021 and Beyond
Special lecture for California residents - California Zoning Code Updates 2021
Cost management, Part 1
Cost management, Part 1
Cost management, Part 2
Cost management, Part 2
Cost management, Part 3
Cost management, Part 3
Financing
Financing
Rental income models
Rental income models
Designer/Builder relationships
Designer/Builder relationships
A HUGE collection of ADU photos
Building science
Building science
Green building
Green building
The design process
The design process
ADU design principles
FREE PREVIEWADU design principles
FREE PREVIEWBasement conversion ADUs
Basement conversion ADUs
Utility connections
Utility connections
The construction process
The construction process
Conversation with an ADU builder
Quick tip: Cadet heaters
Quick tip: Split electric meters
Quick tips: Bath tub
Quick tip: Utilizing set backs
Quick tip: Shared courtyard space
Quick tip: Radiant panels
Quick tip: In-floor radiant heating
Quick tip: Exterior plumbing for radiant floor heating
Quick tip: Covered entry ways
Quick tip: Covered entry ways
Quick tip: Closet under stairs
Quick tip: Alley ADUs
Quick tip: Accessory structures for storage
Quick tip: Two bedroom ADUs
Quick tip: Stacked drawers
Quick tip: Tall ceilings
Quick tip: Tall ceilings
Quick tip: Dormers
Quick tip: Dry shell
Quick tip: Ductless mini-split
Quick tip: Garage with guest room
Quick tip: Lock pad
Quick tip: Murphy bed
Quick tip: Rough-in sewer connection
FREE PREVIEWQuick tip: Sliding glass doors
Quick tip: Tall ceiling joists
Quick tip: Non-habitable space
Quick tip: Covered entries
Quick tip: Bathroom layout
Quick tip: Acoustic privacy
Quick tip: Alternating tread stairs
Quick tip: Types of high windows
Quick tip: Split levels
Quick tip: Condenser unit for ductless minisplit
Quick tip: Dedicated water meter
Quick tip: Underbelly of house
Quick tip: Types of basement ADUs
Quick tip: Foundation walls
Quick tip: Elevated ceilings in basement
Quick tip: Cribbing
Quick tip: Batt insulation
Quick tip: Lifting a house
Quick tip: Adding additional usable square footage to a room
Quick tip: Salvaged materials
ADU owner interview: Chris Wilson
ADU owner interview: Mark and Ellen Burr
ADU owner interview: Susan Moray
ADU owner interview: Pam and Justin
ADU owner interview: Mark Lewis
ADU owner interview: Megan and Matt Klepp
Sign up to check out the first module for free
This course provides you with all of the information you need to get started
So, you’re thinking of building an accessory dwelling unit for rental income, or to provide housing flexibility for yourself?
Or maybe you need a place for your aging parents to move nearby?
But you’ve got questions and you don't know where to start. You might even have some anxiety about the whole ordeal. You've never developed a housing unit before… and you're starting to realize there's a LOT to it.
This is exactly how I felt when I built my first ADU. I wanted to have someone who had been through the process walk me through it step by step. Well, that’s why I made this course and the Building an ADU website. I’m Kol Peterson, and I’m here to help you learn how to build your dream ADU.
Course Curriculum
Introduction to ADUs
The first part of the course introduces what ADUs are and describes what a jurisdiction legally defines as a housing unit. Understanding how a municipality thinks about housing development is key to figuring out how to develop a property. We also cover why ADUs are emerging as a phenomenon right now across the United States.
Module #1: Zoning and Development Regulations
Before you begin your journey, you need to fully understand the landscape. This module deals with common regulatory issues that you’re likely to confront when you start down the pathway of ADU development: parking, owner occupancy, conditional land use reviews, lot size issues, setbacks, ADU size limitations, height requirements, and more. Then, we discuss how to work creatively with these regulatory constructs, as well as using clever (and legal) loopholes.
Module #1 will equip you with the language and terminology that city planners and zoning officials use in development regulations so you'll better understand the rules of the game - and the best ways to play it.
Module #2: Cost and Financing
Having a vision for your ADU is one thing - paying for it is another. Knowing how an ADU would benefit your life and having an idea of what it would look like on your property is a great start, but you still need to figure out how to pay for it. Module #2 explains how much ADUs cost to build and provides some general guidance to help you understand how to manage those costs.
If you’re surprised to learn how much an ADU costs, don’t worry: we also cover the common ways homeowners pay for them. I know that everyone wants to build their ADU for as little money as possible. I can’t promise that you’ll be able to build your ADU cheaply, but I can equip you with the tools you need to fund its development.
Module #3: Design Build Process
ADUs are a special and rare form of urban infill housing. In addition to the particular nuances of ADU planning, there are many best practices to understand about small space design in general. In Module #3, we’ll cover everything from utility connections to space-efficient design. We also go over the basics of building science (green building) so that you know the right questions to ask your designer and builder.
Lastly, we’ll walk through the whole development process step by step to tie the whole curriculum together.
When you sign up for the course, you’ll gain access to:
20 classes covering every facet of ADU development, including ADU costs, financing, design, permitting, construction, and rental management approaches
40+ quick tips from “out in the field” covering ADU-specific building information
6 Interviews with ADU owners who have recently gone through (or are going through) the ADU development process themselves
5 walking tours of ADUs
Tips and advice on where to access additional resources to help you through the ADU development process
Think of this course as an on-ramp to the process of designing and building an ADU. This course will open your eyes to the spectrum of possibilities that you’ll manage and execute as you design and build your ADU. This course is intended to make the whole process easier by helping you understand the entire ADU journey from blueprint to drywall. This is the course I wish I had when I started!
By the end of the course, you will understand the design/permit/build process, which will save you significant time and money. Your end result will be a better product - an ADU designed and built for your unique situation.
This is a sample of one of our Quick Tip videos
Check out a free, 20-minute ADU design principles presentation. This presentation is within Module #3: Design Build Process of the Building an ADU web course.