Analysis of return on investment in small-square-meter decoration: Which decorations can best increase the resale value of a house?

Is decoration a consumption or an investment? Let the data speak

Many people ask: "If you spend one million on renovations, how much will the house increase when you sell it?" According to 2026 market analysis, renovations can indeed increase the value of the house, but not all renovations can bring the same returns. The key is "which projects are worth investing in".

According to the analysis of real estate experts, after decoration, the asset appreciation rate can be estimated by comparing market conditions, surrounding actual price listings, and photos before and after decoration. Let’s use the data to see which renovations increase home value the most.

The current situation of the real estate market in 2026: The demand for decoration of medieval houses has increased significantly

The real estate market in 2026 will see a "golden cross" phenomenon. According to TWProbe market analysis, a total cost comparison for a 35-square-meter property shows that the unit price of a new pre-sale house is about 800,000/square-meter, and the total cost includes simple decoration is about 29 million; while the unit price of a mid-century house is about 600,000/square-meter, plus decoration costs of 3-4 million, the total cost is about 25-26 million, which is 3-4 million cheaper than a pre-sale house.

This makes the decoration market hot in 2025-2026. According to 100 Interior Design statistics, the decoration scale will reach 550 billion yuan in 2025, and it is expected to continue to grow in 2026.

The top five renovation projects with the highest ROI

1. Kitchen renovation (ROI: 70-80%)

The kitchen is known as the "heart of the house" and is one of the spaces that buyers value most. According to market research:

• Modern kitchen update (including kitchen utensils, countertops, equipment): investment of about 170,000-300,000 yuan
• Can increase house value: about 150,000-250,000 yuan
• Shorten house sales time: about 30-45 days

Key investment projects: system kitchen cabinets, quartz stone countertops, energy-saving kitchenware, LED lighting

2. Bathroom Renovation (ROI: 60-70%)

The bathroom is the second most critical space. Old bathrooms are often the main reason for buyers to bargain:

• Bathroom renovation (1.5 square meters): investment about 150,000-250,000 yuan
• Can increase house value: about 100,000-180,000 yuan
• Avoid buyers’ bargaining: about 200,000-300,000 yuan

Key investment projects: dry and wet separation, treatment-free toilets, anti-mold treatment, ventilation system

3. Floor renewal (return on investment: 50-60%)

The floor is the first impression upon entering the door, affecting the overall space texture:

• Wooden floor/super wear-resistant floor: about 8,000-15,000 yuan per square meter
• Yes Increase the value of the house: about 50-60% of the decoration cost
• Visual effect: immediately improve the texture of the space

Recommended choices: super wear-resistant wooden floor (highest CP value), SPC stone plastic floor (good waterproof)

4. Painting (return on investment: 100-150%)

Painting is the decoration project with the highest CP value:

• Full room painting (30 square meters): about 50,000-80,000 yuan
• Can increase the value of the house: about 80,000-120,000 yuan
• House sales speed: shortened by about 20-30 days

Recommended choices: light colors (to expand the sense of space), low formaldehyde environmentally friendly paint

5. Storage system (return on investment: 40-50%)

Storage is a rigid requirement for small-square-meter houses in Taiwan:

• System cabinets: about 8,000-20,000 yuan per square meter
• Can improve the practicality of the house: greatly improve the quality of living
• Attractiveness to buyers: high (especially young families)

Which decorations are "not worth" the investment?

1. Overly luxurious decoration
Such as marble walls, crystal lamps, imported building materials, etc. Although it looks high-end, buyers may not like your style, and may instead bargain for the removal cost.

2. Balcony extrapolation
Although the indoor square footage is increased, it is illegal construction, which may become a negotiating disadvantage during transactions and even affect the bank loan ratio.

3. Special style design
Strong personal styles such as industrial style and dark style may narrow the pool of potential buyers.

Decoration investment return rate calculation formula

How to calculate your decoration investment return rate? Use the following formula:

Return on investment = (value-added amount after decoration - decoration cost) ÷ decoration cost × 100%

Example:
- Decoration cost: 1 million yuan
- House price before decoration: 20 million yuan
- House price after decoration: 20.8 million yuan
- Value-added amount: 800,000 yuan
- Return on investment = (80 - 100) ÷ 100 × 100% = -20% (loss)

This example illustrates that not all renovations can make money. The key is to choose projects with "high market acceptance".

Decoration strategies for different square meters

Small square meters (10-20 square meters):

• Key investments: storage system, open kitchen, light-colored paint
• Budget allocation: basic 60% for basic engineering and 40% for beautification and decoration
• Target group: singles, small families

Medium square meters (20-35 square meters):

• Key investments: kitchen, bathroom, flooring
• Budget allocation: 50% for basic engineering, 50% for beautification and decoration
• Target group: families, house-swapping people

Number of large square meters (above 35 square meters):

• Key investments: public spaces, master bedrooms, system cabinets
• Budget allocation: 40% for basic engineering, 60% for beautification and decoration
• Target groups: house-changing people, high-asset groups

2026 decoration trends: Which designs are the most popular?

According to the 100 Interior Design survey, the most popular renovation trends in 2026 include:

1. Modern minimalist style: Clean lines, neutral colors, function first
2. Japanese Nordic style (Japandi): Combining Japanese warmth and Nordic simplicity
3. Smart home integration: Smart lighting, Smart door locks, smart temperature control
4. Green building material applications:Low formaldehyde, environmentally friendly, health-oriented
5. Multifunctional space: Integrated living room and study, flexible partitions

3 things that must be done before decoration

1. Check the surrounding actual price login
Understand the transaction prices in the same community and the same square footage, and determine the reasonable selling price after decoration.

2. Consult a professional real estate agent
Ask local real estate agents "which decorations can best increase the sales price". Different regions have different needs.

3. Set an upper limit on the renovation budget
It is recommended that the renovation budget should not exceed 10-15% of the total price of the house to avoid over-investment.

Conclusion: Only by smart decoration can you earn the price difference

The return on investment in decoration depends on "market demand" rather than "personal preference". Kitchen, bathroom, and painting are the three projects with the highest CP value, but excessive luxury or special style decoration may reduce the appeal.

It is recommended to conduct market research before decoration, choose a "neutral, practical, and durable" design, and prioritize basic engineering (water, electricity, waterproofing) within the budget, and then consider beautification and decoration. Remember, the purpose of renovation is to "improve the competitiveness of the house", not to "create a dream home." Do it right the first time to get the most out of your renovation investment.