AI Cross-Compares Construction Estimates with Different Formats in as Little as 5 Minutes — QubeBase Launches 'Mitsumori Oyakata'
QubeBase, a company specializing in AI solutions for the real estate industry, has launched 'Mitsumori Oyakata,' an AI-powered estimation comparison tool tailored for building repairs and renovations. The AI automatically reads and normalizes estimates with varying formats from multiple contractors, enabling cross-comparison in as little as 5 minutes.
📋 Article Processing Timeline
- 📰 Published: June 15, 2026 at 19:29
- 🔍 Collected: June 15, 2026 at 10:36
- 🤖 AI Analyzed: June 16, 2026 at 01:42 (15h 5m after Collected)
QubeBase Inc. (Headquarters: Chiyoda City, Tokyo; CEO: Eijun Tei; hereinafter 'QubeBase'), a company specializing in AI solutions for the real estate industry, has launched today its AI-powered estimation comparison tool for building repairs and renovations, 'Mitsumori Oyakata'.
Estimates with different formats from multiple contractors are automatically read, normalized, and cross-compared by AI. Tasks that previously relied on manual work can now be completed in as little as 5 minutes (※).
※ Estimated AI processing time after uploading the estimate.
Our mission is to 'redesign every aspect of the real estate industry’s operations with AI.' We are re-examining long-standing work practices—such as personalized decision-making and processes dependent on paper and Excel—through technology, creating a future where people can focus on their core tasks like judgment and communication. This service is our first step toward that vision.
Service URL: https://qube.co.jp/lp/mitsumori-oyakata
Two Challenges in Real Estate Industry's 'Estimate Comparison'
Challenge 1: Differing Estimate Formats by Contractor
Renovation companies, construction firms, and equipment contractors each create estimates using their own formats, resulting in inconsistent item names and levels of detail. This makes direct cross-comparison difficult.
For the same interior work, one contractor may list it as 'Full Interior Work,' while another breaks it down into 'Wallpaper Replacement,' 'Flooring Replacement,' and 'Door Adjustment.' Without standardization, simple side-by-side comparison is impossible, requiring time-consuming manual alignment of item granularity.
Challenge 2: Time Costs from Large Number of Items
Construction estimates grow in item count as project scale increases, making manual comparison labor-intensive.
Traditionally, procurement staff manually transcribe data into Excel, align items, and then compare. With multiple contractors, the transcription, formatting, and item matching alone consume significant time, making the comparison process a major burden.
Two Values Enabled by 'Estimate Comparison AI'
1. Automatic Estimate Reading and Normalization
Once an estimate is uploaded, AI automatically processes it.
Supported formats include PDF, Excel, Word, and even photos of handwritten estimates. Generative AI reads the document and automatically extracts item names, unit prices, quantities, and amounts.
Moreover, items with varying descriptions—such as 'Wallpaper Replacement,' 'Wall Covering,' and 'Vinyl Wallpaper Work'—are interpreted by AI and standardized into common item names and units. This transforms each contractor’s estimate into structured data in a uniform format. Staff only need to confirm the content, eliminating manual transcription and formatting.
2. Item Matching and Cross-Comparison
When estimates from multiple contractors are uploaded, AI automatically infers relationships between items. Even items with different levels of granularity—such as 'Full Interior Work' from Company A matching 'Wallpaper Replacement,' 'Flooring Replacement,' and 'Door Adjustment' from Company B—are matched, allowing side-by-side comparison of prices and unit costs.
Additionally, AI automatically highlights items with significant price or unit cost differences across contractors. This makes it immediately clear where to verify or negotiate, and the generated comparison report can be directly used for owner reporting or internal approvals.
Even junior staff can now compare multiple estimates with the same level of insight as experienced professionals.
Precision Through Real Estate Industry Specialization
Unlike generic estimation tools, this solution is specialized for real estate, construction, and renovation industries, understanding domain-specific terminology and practices such as 'Interior Work,' 'Equipment Renewal,' 'Exterior Painting,' 'Waterproofing,' and 'Plumbing Systems.'
It accurately recognizes industry-specific items and enables appropriate comparisons.
It also supports diverse formats received from contractors—PDF, Excel, Word, and photos of handwritten estimates—transforming them into comparable data without manual transcription or formatting.
The Broader Vision: Redesigning Real Estate Operations with AI
QubeBase Inc. provides industry-specific AI solutions, from designing and developing generative AI agents to supporting in-house talent development. 'Estimate Comparison AI' is our first service in this mission.
Our vision extends beyond estimate comparison—to redesign the entire real estate workflow. We will sequentially deploy industry-specific AI agents for property management, tenant communications, contract processing, and resident inquiries—areas still reliant on personalized processes and paper/Excel.
For client-specific challenges, we offer end-to-end support, including design, development, operation, and talent training of generative AI agents. Combined with BPO (Business Process Outsourcing), we are advancing initiatives to 'redesign the business process itself.'
'Redesigning every aspect of real estate operations with AI'—we begin this journey with this service.
Pricing Plans and Free Trial
We offer multiple pricing plans based on company size and usage volume.
A free trial is also available for evaluation prior to adoption.
Requests for materials with pricing details and free demo sign-ups are accepted via the service website or inquiry form. Information about the free trial is also available upon request.
Inquiries: https://qube.co.jp
Product Overview
Service Name
Mitsumori Oyakata
Delivery Model
Cloud SaaS (Web Browser)
Target Industries
Property Management, Leasing, Sales, Construction, Renovation
Supported Formats
PDF, Excel, Word, Images (JPEG, PNG)
Key Features
AI Estimate Reading, Item Normalization, Cross-Comparison, Automatic Comparison Report Generation
Launch Date
June 15, 2026
Official Website
https://qube.co.jp/lp/mitsumori-oyakata
Company Overview
Company Name
QubeBase Inc.
CEO
Eijun Tei
Headquarters
3F Sompo Japan Kasumigaseki Building, 3-7-3 Kasumigaseki, Chiyoda City, Tokyo
Business Activities
Design and development of generative AI agents, in-house talent development support, AI Enablement (generative AI utilization support), Business Process Outsourcing (Custom BPO)
URL
https://qube.co.jp
[About CEO Eijun Tei]
Joined Mitsubishi Estate Co., Ltd. in 2009. After experience in real estate investment and development, led new business planning, startup investments, and open innovation initiatives in the new business development division. Founded QubeBase Inc. in 2025 to deliver industry-specific solutions combining deep insights into structural challenges in real estate with generative AI technology.
Estimates with different formats from multiple contractors are automatically read, normalized, and cross-compared by AI. Tasks that previously relied on manual work can now be completed in as little as 5 minutes (※).
※ Estimated AI processing time after uploading the estimate.
Our mission is to 'redesign every aspect of the real estate industry’s operations with AI.' We are re-examining long-standing work practices—such as personalized decision-making and processes dependent on paper and Excel—through technology, creating a future where people can focus on their core tasks like judgment and communication. This service is our first step toward that vision.
Service URL: https://qube.co.jp/lp/mitsumori-oyakata
Two Challenges in Real Estate Industry's 'Estimate Comparison'
Challenge 1: Differing Estimate Formats by Contractor
Renovation companies, construction firms, and equipment contractors each create estimates using their own formats, resulting in inconsistent item names and levels of detail. This makes direct cross-comparison difficult.
For the same interior work, one contractor may list it as 'Full Interior Work,' while another breaks it down into 'Wallpaper Replacement,' 'Flooring Replacement,' and 'Door Adjustment.' Without standardization, simple side-by-side comparison is impossible, requiring time-consuming manual alignment of item granularity.
Challenge 2: Time Costs from Large Number of Items
Construction estimates grow in item count as project scale increases, making manual comparison labor-intensive.
Traditionally, procurement staff manually transcribe data into Excel, align items, and then compare. With multiple contractors, the transcription, formatting, and item matching alone consume significant time, making the comparison process a major burden.
Two Values Enabled by 'Estimate Comparison AI'
1. Automatic Estimate Reading and Normalization
Once an estimate is uploaded, AI automatically processes it.
Supported formats include PDF, Excel, Word, and even photos of handwritten estimates. Generative AI reads the document and automatically extracts item names, unit prices, quantities, and amounts.
Moreover, items with varying descriptions—such as 'Wallpaper Replacement,' 'Wall Covering,' and 'Vinyl Wallpaper Work'—are interpreted by AI and standardized into common item names and units. This transforms each contractor’s estimate into structured data in a uniform format. Staff only need to confirm the content, eliminating manual transcription and formatting.
2. Item Matching and Cross-Comparison
When estimates from multiple contractors are uploaded, AI automatically infers relationships between items. Even items with different levels of granularity—such as 'Full Interior Work' from Company A matching 'Wallpaper Replacement,' 'Flooring Replacement,' and 'Door Adjustment' from Company B—are matched, allowing side-by-side comparison of prices and unit costs.
Additionally, AI automatically highlights items with significant price or unit cost differences across contractors. This makes it immediately clear where to verify or negotiate, and the generated comparison report can be directly used for owner reporting or internal approvals.
Even junior staff can now compare multiple estimates with the same level of insight as experienced professionals.
Precision Through Real Estate Industry Specialization
Unlike generic estimation tools, this solution is specialized for real estate, construction, and renovation industries, understanding domain-specific terminology and practices such as 'Interior Work,' 'Equipment Renewal,' 'Exterior Painting,' 'Waterproofing,' and 'Plumbing Systems.'
It accurately recognizes industry-specific items and enables appropriate comparisons.
It also supports diverse formats received from contractors—PDF, Excel, Word, and photos of handwritten estimates—transforming them into comparable data without manual transcription or formatting.
The Broader Vision: Redesigning Real Estate Operations with AI
QubeBase Inc. provides industry-specific AI solutions, from designing and developing generative AI agents to supporting in-house talent development. 'Estimate Comparison AI' is our first service in this mission.
Our vision extends beyond estimate comparison—to redesign the entire real estate workflow. We will sequentially deploy industry-specific AI agents for property management, tenant communications, contract processing, and resident inquiries—areas still reliant on personalized processes and paper/Excel.
For client-specific challenges, we offer end-to-end support, including design, development, operation, and talent training of generative AI agents. Combined with BPO (Business Process Outsourcing), we are advancing initiatives to 'redesign the business process itself.'
'Redesigning every aspect of real estate operations with AI'—we begin this journey with this service.
Pricing Plans and Free Trial
We offer multiple pricing plans based on company size and usage volume.
A free trial is also available for evaluation prior to adoption.
Requests for materials with pricing details and free demo sign-ups are accepted via the service website or inquiry form. Information about the free trial is also available upon request.
Inquiries: https://qube.co.jp
Product Overview
Service Name
Mitsumori Oyakata
Delivery Model
Cloud SaaS (Web Browser)
Target Industries
Property Management, Leasing, Sales, Construction, Renovation
Supported Formats
PDF, Excel, Word, Images (JPEG, PNG)
Key Features
AI Estimate Reading, Item Normalization, Cross-Comparison, Automatic Comparison Report Generation
Launch Date
June 15, 2026
Official Website
https://qube.co.jp/lp/mitsumori-oyakata
Company Overview
Company Name
QubeBase Inc.
CEO
Eijun Tei
Headquarters
3F Sompo Japan Kasumigaseki Building, 3-7-3 Kasumigaseki, Chiyoda City, Tokyo
Business Activities
Design and development of generative AI agents, in-house talent development support, AI Enablement (generative AI utilization support), Business Process Outsourcing (Custom BPO)
URL
https://qube.co.jp
[About CEO Eijun Tei]
Joined Mitsubishi Estate Co., Ltd. in 2009. After experience in real estate investment and development, led new business planning, startup investments, and open innovation initiatives in the new business development division. Founded QubeBase Inc. in 2025 to deliver industry-specific solutions combining deep insights into structural challenges in real estate with generative AI technology.
FAQ
What is Mitsumori Oyakata?
A SaaS that uses AI to automatically read, normalize, and compare construction estimates from multiple vendors.
What file formats does it support?
PDF, Excel, Word, images (JPEG, PNG), and even photos of handwritten estimates.
When was Mitsumori Oyakata launched?
Service began on June 15, 2026.
Is there a free trial available?
Yes, a free trial is available before commitment, with demo requests accepted.
What does QubeBase do?
Provides generative AI agents, talent development, and BPO services specialized for real estate.