Japan Home Shield Launches "Homille Renove Navi", an AI-Powered Support System for Detached House Purchasing, Resale, and Renovation
Japan Home Shield has released "Homille Renove Navi," an industry-first AI system for real estate professionals. It combines deterioration estimation and market appraisal to streamline the purchasing and renovation of used detached houses.
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- 📰 Published: April 23, 2026 at 20:00
- 🔍 Collected: April 23, 2026 at 11:31
- 🤖 AI Analyzed: April 24, 2026 at 00:34 (13h 3m after Collected)
Japan Home Shield Corporation (Location: Sumida-ku, Tokyo; President: Takami Teshigawara), which handles building inspections and ground surveys for detached houses, has launched "Homille Renove Navi." This system is a detached house purchase, resale, and renovation business support system that integrates a "Housing Deterioration Estimation AI," developed based on building inspection data accumulated over 20 years, with a "High-Precision Real Estate Assessment Engine."
This is the industry's first*1 service for buyers, resellers, and renovators of used detached houses, enabling AI-driven building deterioration diagnosis and real estate price assessment simultaneously in a single process.
Homille Renove Navi Document Download
Background of Development
With over 9 million vacant homes*2 in Japan, promoting the circulation of existing homes has become a major social issue. In addition, the prices of newly built homes are soaring due to rising construction costs and stricter environmental regulations, resulting in a rapidly growing demand for renovated used homes that offer an excellent balance of price and quality, particularly among first-time homebuyers. Against this backdrop, the purchase-and-resale market is expanding at a high growth rate, projected to increase by 18.8%*3 year-on-year in 2025.
On the other hand, used detached houses are highly individual, and there are deteriorations and defects that are difficult to judge from the exterior. Thus, the risk of unexpected costs arising after purchase and the difficulty of setting appropriate prices have been major barriers to business expansion. By using AI to digitize and sophisticate property investigations and purchase decisions—which have traditionally relied on the experience and intuition of experts—there is an increasing need to enable even inexperienced staff to make highly accurate decisions and support business expansion in a reproducible manner.
Overview of "Homille Renove Navi"
"Homille Renove Navi" is a detached house purchase, resale, and renovation business support system that integrates a "Housing Deterioration Estimation AI," developed based on Japan Home Shield's building inspection data accumulated over 20 years, with a "High-Precision Real Estate Assessment Engine."
Simply by inputting basic information such as the subject property's address, age, and structure, the "Housing Deterioration Estimation AI" scores deterioration risks across 17 items—including roof leaks, primary structural strength, and water supply/drainage pipes—on a 5-point scale, while also considering location characteristics like earthquake history, and calculates the necessary repair budget. Furthermore, based on surrounding real estate transaction data, it visualizes the estimated sales price, area liquidity, and ease of selling with high precision.
A major feature is the ability to use this data to instantly run a "business simulation" premised on securing a target profit. This reduces the property assessment task, which used to rely on expert experience and took half a day, to about 10 minutes, standardizing purchasing decisions. In the housing and remodeling industry, which faces labor shortages, this AI agent supports everything from the launch to the expansion of the purchase-and-resale business, contributing to securing corporate profits and improving productivity.
Features of Homille Renove Navi
1. Deterioration estimation based on over 20 years of accumulated building inspection data
Backed by experience and technology that have supported safe housing, it visualizes invisible roof leaks and structural risks prior to a physical site inspection, based on actual building inspection records.
2. High-precision market price assessment
Equipped with an AI analysis engine boasting an error rate of 2.939%*4, it derives appropriate purchase and sales prices as well as surrounding market rates.
3. Rapid business simulation completed in about 10 minutes
By centralizing information such as estimated sales prices, renovation costs, risk repair costs, and regional ease of selling, it provides an environment where anyone can make swift purchasing decisions from a professional perspective.
* The results displayed in this service are reference results analyzed and predicted by AI based on the location, building structure, age, our building inspections, and other property-specific information and data. These results do not guarantee a match with actual appraisals or the establishment of a transaction in any real estate dealing, including purchasing, selling, or mediating the subject property.
Future Developments
In a housing market where the soaring prices of new builds and the vacant house problem are becoming severe, this service supports housing business operators with data and AI to diversify into purchase-resale and renovation businesses and achieve sustainable business growth. Furthermore, by lowering the psychological hurdles regarding housing inspections and reducing information asymmetry concerning housing, we will create an environment where anyone can choose existing housing with peace of mind, thereby contributing to the revitalization of used housing distribution.
In the future, through the visualization of housing quality using AI, we will realize a system that prevents vacant houses from being created and provides information that allows owners to properly maintain and manage their properties. We aim for a society that utilizes a "Housing Data Platform" connecting diverse market players via API linkages, and we will contribute to realizing a society where Japan's housing asset value is correctly evaluated and maintained into the future.
*1 Industry
This is the industry's first*1 service for buyers, resellers, and renovators of used detached houses, enabling AI-driven building deterioration diagnosis and real estate price assessment simultaneously in a single process.
Homille Renove Navi Document Download
Background of Development
With over 9 million vacant homes*2 in Japan, promoting the circulation of existing homes has become a major social issue. In addition, the prices of newly built homes are soaring due to rising construction costs and stricter environmental regulations, resulting in a rapidly growing demand for renovated used homes that offer an excellent balance of price and quality, particularly among first-time homebuyers. Against this backdrop, the purchase-and-resale market is expanding at a high growth rate, projected to increase by 18.8%*3 year-on-year in 2025.
On the other hand, used detached houses are highly individual, and there are deteriorations and defects that are difficult to judge from the exterior. Thus, the risk of unexpected costs arising after purchase and the difficulty of setting appropriate prices have been major barriers to business expansion. By using AI to digitize and sophisticate property investigations and purchase decisions—which have traditionally relied on the experience and intuition of experts—there is an increasing need to enable even inexperienced staff to make highly accurate decisions and support business expansion in a reproducible manner.
Overview of "Homille Renove Navi"
"Homille Renove Navi" is a detached house purchase, resale, and renovation business support system that integrates a "Housing Deterioration Estimation AI," developed based on Japan Home Shield's building inspection data accumulated over 20 years, with a "High-Precision Real Estate Assessment Engine."
Simply by inputting basic information such as the subject property's address, age, and structure, the "Housing Deterioration Estimation AI" scores deterioration risks across 17 items—including roof leaks, primary structural strength, and water supply/drainage pipes—on a 5-point scale, while also considering location characteristics like earthquake history, and calculates the necessary repair budget. Furthermore, based on surrounding real estate transaction data, it visualizes the estimated sales price, area liquidity, and ease of selling with high precision.
A major feature is the ability to use this data to instantly run a "business simulation" premised on securing a target profit. This reduces the property assessment task, which used to rely on expert experience and took half a day, to about 10 minutes, standardizing purchasing decisions. In the housing and remodeling industry, which faces labor shortages, this AI agent supports everything from the launch to the expansion of the purchase-and-resale business, contributing to securing corporate profits and improving productivity.
Features of Homille Renove Navi
1. Deterioration estimation based on over 20 years of accumulated building inspection data
Backed by experience and technology that have supported safe housing, it visualizes invisible roof leaks and structural risks prior to a physical site inspection, based on actual building inspection records.
2. High-precision market price assessment
Equipped with an AI analysis engine boasting an error rate of 2.939%*4, it derives appropriate purchase and sales prices as well as surrounding market rates.
3. Rapid business simulation completed in about 10 minutes
By centralizing information such as estimated sales prices, renovation costs, risk repair costs, and regional ease of selling, it provides an environment where anyone can make swift purchasing decisions from a professional perspective.
* The results displayed in this service are reference results analyzed and predicted by AI based on the location, building structure, age, our building inspections, and other property-specific information and data. These results do not guarantee a match with actual appraisals or the establishment of a transaction in any real estate dealing, including purchasing, selling, or mediating the subject property.
Future Developments
In a housing market where the soaring prices of new builds and the vacant house problem are becoming severe, this service supports housing business operators with data and AI to diversify into purchase-resale and renovation businesses and achieve sustainable business growth. Furthermore, by lowering the psychological hurdles regarding housing inspections and reducing information asymmetry concerning housing, we will create an environment where anyone can choose existing housing with peace of mind, thereby contributing to the revitalization of used housing distribution.
In the future, through the visualization of housing quality using AI, we will realize a system that prevents vacant houses from being created and provides information that allows owners to properly maintain and manage their properties. We aim for a society that utilizes a "Housing Data Platform" connecting diverse market players via API linkages, and we will contribute to realizing a society where Japan's housing asset value is correctly evaluated and maintained into the future.
*1 Industry