r/AccessoryDwellings
5k members
r/AccessoryDwellings is a subreddit with 5k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses adu, california, building, garage, and cost.
An accessory dwelling unit (ADU) is a smaller, independent residential dwelling unit located on the same lot as a stand-alone (i.e., detached) single-family home. ADUs go by many different names throughout the U.S., including accessory apartments, secondary suites, and granny flats.
Popular Themes in r/AccessoryDwellings
#1
Advice Requests
: "CA ADU - City demanding driveway upgrade - how best to resolve?"
11 posts
#2
Solution Requests
: "Couple built a $500K ADU in their parents' backyard to beat $1.8M home prices. Is there a better way?"
4 posts
#3
Money Talk
: "Is $300K-$400K a common price for building a smaller ADU in California?"
4 posts
#4
Pain & Anger
: "Bay Area ADU project nightmare — 15+ months, roof sagging, poor workmanship, GC careless. What would you do?"
3 posts
#5
Ideas
: "Plans for Tiny ADU. Thoughts?"
2 posts
Popular Topics in r/AccessoryDwellings
#1
Adu
: "How to build an Adu in California as an owner-builder"
144 posts
#2
California
: "How to build an ADU in California as an owner-builder"
52 posts
#3
Building
: "Documented my experience Building an ADU!"
38 posts
#4
Garage
: "Adding an ADU to a detached Garage, good idea or expensive?"
28 posts
#5
Cost
: "Lets gather some Cost data! Please post how much your ADU ended up Costing."
16 posts
#6
Prefab
: "Arado weeHouse - Off-grid 336 sq ft 1 Bedroom Modern Prefab Home, Minnesota"
9 posts
#7
Renting
9 posts
#8
Shipping Container
: "Port-A-Bach - Shipping Container Micro-House with Folding Wall, New Zealand"
7 posts
#9
Layout
: "Where can I can find a AdU Layout for one that is connected to a detached garage?"
6 posts
#10
Recommendations
: "Anyone recently have an ADU built and could they offer advice/Recommendations?"
5 posts
Member Growth in r/AccessoryDwellings
Yearly
+3k members(165.7%)
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Last updated: June 9, 2026