prolog
- Why I started semi-self interior consulting

PART 1.
Semi-self Interior Design: What You Need to Know to Get Started
1.
What is semi-self interior?
2.
People who can do semi-self-care vs. those who can't
3.
Understanding the construction sequence is half the battle.
4.
Between Self and Turnkey: Why 'Semi' Self?
5.
How to Budget - Where and How Much Does It Cost?

PART 2.
Practical Guide for Each Process
6.
Permits, Consents, and Maintenance - Getting Started Right
7.
Demolition - The Beginning of Every Process, How to Prepare?
8.
Installation/Plumbing - The invisible but important work
9.
Windows - A technology that simultaneously captures insulation and lighting
10.
Electricity - The location of an outlet can affect your quality of life.
11.
Carpentry - Building the framework of a space
12.
Tiles - The most powerful element in determining style
13.
Painting/Painting - Largest area, biggest atmosphere
14.
Flooring/flooring - The floor is the foundation of the interior.
15.
Lighting/Ceiling Finishes - There's a home that's easy on the eyes.
16.
Furniture/Storage - The Final Touch of a Beautiful Home
17.
Cleaning & Defect Inspection - The End of Construction, The Beginning of Your Home
18.
Silicone - A small finish completes the whole thing

PART 3.
Real tips from the field
19.
How to Write a Contract That Won't Get You Scammed
20.
How to communicate with contractors - be respectful and firm
21.
How to Create a Schedule - The Key to Scheduling
22.
Error-Free Material Ordering Guide
23 7 Things Consumers Must Check During Construction
24.
Let's make sure to check this.
25.
Analysis of Semi-Self Success Stories

PART 4.
Design tips to make your home your own
26.
Design that suits me rather than trends
27.
Principles of color combination
28.
How to transform space through perspective, not structure

supplement
1.
Interior design options by budget (as of 2025)
2.
Construction company selection criteria

Epilogue
- Ultimately, a home is a story of life.

High-end design at a reasonable price, everything about semi-self interior design.
An interior revolution created by experts and consumers together

《Semi-Self Interior Textbook》 is a guide that turns fear and hesitation about interior design into practice.
Author Lee Je-hee, an art major, has established herself as a hands-on interior creator by releasing '1 interior video a day' on YouTube.
He holds a bachelor's and master's degree in industrial design from Chung-Ang University, and views interior design not as a simple aesthetic field, but as a process of systematic design and problem-solving.

The core of this book is a new method called ‘semi-self interior’.
Consumers save money and improve quality while working with experts to ensure safety and quality.
The author designed a system that would be completed on the move-in date, and in the process, he established a new lifestyle model in which consumers, builders, and consultants collaborated.
This philosophy is permeated throughout the book, prompting readers to ask the fundamental question, "How do we complete our home?" beyond simply "decorating it?"

Additionally, planner 'Engineering Sister Yoon Su-young' adds an engineering perspective and data analysis skills to delicately analyze consumers' lifestyle patterns and selection processes.
As a result, this book became Korea's first semi-self interior design textbook that simultaneously captures senses, structure, information, and emotions.

The book contains vivid reviews from actual readers.
“I saved money and felt at ease,” and “My child said it felt like he was in a hotel when he saw the finished house,” are testaments to the effectiveness of semi-self interior design.
.
Home is not just a space, it is a stage for life.
《Semi-Self Interior Textbook》 is an essential guide for anyone who wants to make this stage more beautiful and practical.
This book is highly recommended for anyone from beginners in interior design to practical readers interested in home decorating, and those who want to enjoy high-end design at a reasonable price.