KDP categories · Top KDP authors
Codes & Standards: Amazon KDP category data
Amazon Books Best Sellers data for Codes & Standards, updated Nov 2, 2026: median price $40.00, median 20 reviews, average rating 4.6 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $20.48 – $75.34 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 8% |
| Books on the list | 99 |
| Store | Books |
What stands out
- Its median reviews are 10% of the parent category Architecture (204), one of the easier corners under it.
- At $40.00 its median price beats 94% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 73% of Books categories: the median best seller has only 20 reviews, so new books can chart with few.
Top 10 Codes & Standards best sellers
-
Ultimate Guide Wiring, Updated 10th Edition: Meets Current National Electrical Code Standards (Creative Homeowner) DIY Residential Electrical Installations and Repairs - Diagrams and Step-by-Step
by Editors of Creative Homeowner
- List rank#1
- Price$23.29
- Rating4.6
- Reviews520
-
Ultimate Guide: Plumbing, 6th Edition: 2024 National Plumbing Code Standards (Creative Homeowner) Beginner-Friendly Step-by-Step Home Plumbing Projects, DIY Repair Information, and Over 800 Photos
by Editors of Creative Homeowner
- List rank#2
- Price$19.99
- Rating4.6
- Reviews301
-
Human Dimension & Interior Space: A Source Book of Design Reference Standards
by Julius Panero
- List rank#3
- Price$14.42
- Rating4.7
- Reviews722
-
Code Check 10th Edition: An Illustrated Guide to Building a Safe House
by Douglas Hansen
- List rank#4
- Price$32.61
- Rating4.7
- Reviews104
-
Building Codes Illustrated: A Guide to Understanding the 2024 International Building Code
- List rank#5
- Price$53.60
- Rating4.3
- Reviews20
-
The Complete Guide to Home Inspection: The Essential Manual for Buyers, Sellers, and Homeowners to Assess, Document, and Protect Your Investment.
by Michael Litchfield
- List rank#6
- Price$16.66
- Rating4.6
- Reviews450
-
Code Check Electrical 10th Edition: An Illustrated Guide to Wiring a Safe House
by Douglas Hansen
- List rank#7
- Price$28
- Rating5.0
- Reviews1
-
Architectural Graphic Standards (Ramsey/Sleeper Architectural Graphic Standards Series)
by American Institute of Architects
- List rank#8
- Price$140
- Rating4.6
- Reviews279
-
Code Check Plumbing & Mechanical 6th Edition: An Illustrated Guide to the Plumbing & Mechanical Codes
by Douglas Hansen
- List rank#9
- Price$27.87
- Rating4.7
- Reviews86
-
Code Check Complete 3rd Edition: An Illustrated Guide to the Building, Plumbing, Mechanical, and Electrical Codes
by Douglas Hansen
- List rank#10
- Price$55.99
- Rating4.8
- Reviews190
FAQ
Is Codes & Standards a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 20 reviews and sells for $40.00.
How many reviews do you need to rank in Codes & Standards?
The median best seller has 20 reviews, and 76% of them have fewer than 100.
What do Codes & Standards best sellers cost?
The median price is $40.00; half of the best sellers are priced between $20.48 and $75.34.
Can new books break into Codes & Standards?
8% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.