BuiltAPI
BuiltAPI is a Frankfurt-based B2B SaaS platform that provides a unified API and low-code data orchestration layer for the commercial real estate sector, connecting 70+ ERP, CRM, BI, and proptech systems to help investors, asset managers, and proptech vendors integrate fragmented property data.
- Company typePrivate
- Founded2019
- HeadquartersHessen, Germany
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What BuiltAPI does
BuiltAPI GmbH is a Frankfurt-based B2B SaaS company founded in 2019 that operates a low-code data orchestration platform purpose-built for the commercial real estate sector. The platform functions as a unified API and ETL fabric that connects, normalizes, and exchanges data across 70+ real estate systems (ERPs, CRMs, BI tools, property management software, and IoT platforms), enabling customers to break free from fragmented, closed-system data architectures without replacing existing infrastructure. The company serves real estate investors, asset managers, fund administrators, and proptech software vendors, with named enterprise customers including HIH Real Estate (€70B AUM), Aareal Bank, Swisscom Broadcast, and IntReal Solutions.
The product portfolio is structured as a platform-plus-modules architecture: four core product modules (Financial Modeling, Risk Management, Investor Reporting, Operations Management) sit on top of four service modules (Data Ingestion, Data Management, API Data Exchange, Data Intelligence) and platform components (Connectors, Data Models, Datasets, Scrapers). Underlying technology includes a Model Context Protocol (MCP) framework that dynamically adapts to upstream schema and business-rule changes, automatic API generation supporting REST, gRPC, MQTT, and GraphQL with OpenAPI documentation, RAG-based private AI models for conversational data queries, and support for industry-standard schemas (Argus Enterprise, OSCRE, gif, REXDEX, RICS, IFRS, GRESB). Two additional products (Transactions, Loan Management) and two services (Embedded AI, Custom Applications) are on the roadmap.
BuiltAPI monetizes primarily through enterprise SaaS subscriptions combined with hands-on professional services for implementation and ongoing support, priced on a quote basis under multi-year contracts with defined SLAs (48h integration work orders, 12h incidents). A parallel flexible subscription model targets proptech partners, replacing front-weighted integration fees with distributed lifetime subscriptions. The go-to-market combines direct enterprise field sales with a partner channel program for proptech vendors, supported by content marketing, presence at industry events (Expo Real, Platform Summit), and the iBuilding.pro learning sub-brand. The company is backed by strategic investors Second Century Ventures, TDS, and Propertymark, and graduated from the REACH UK Accelerator in April 2025.
BuiltAPI firmographics
Firmographics- Name
- BuiltAPI
- Legal name
- BuiltAPI GmbH
- Website
- https://builtapi.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- BuiltAPI is a Frankfurt-based B2B SaaS platform that provides a unified API and low-code data orchestration layer for the commercial real estate sector, connecting 70+ ERP, CRM, BI, and proptech systems to help investors, asset managers, and proptech vendors integrate fragmented property data.
- Ownership category
- akta.pro rank
BuiltAPI industry classification
Industry- Product category
- Real Estate Data Infrastructure / PropTech Platform
- NAICS
- Computer Systems Design Services (541512)
- SIC
- Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Platform Engineering & Internal Developer Platforms (IDP) (BPAEAKAC)
Keywords
Where BuiltAPI is headquartered
LocationHeadquarters
- HQ city
- Hessen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
BuiltAPI business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales
Revenue model
- Data Integration Platform Subscription: SaaS platform subscription with professional services for setup, configuration, and ongoing support. Includes unlimited connector and pipeline requests under fair-use limits, quick response SLAs (48h for integration work orders, 12h for incidents), full documentation, QA, and technical support.
- Professional Services: Hands-on implementation, configuration, and ongoing support for setting up robust, scalable data ingestion pipelines. Includes connector development, setup, monitoring, and change management under SLA.
- Flexible Platform Subscription for Partners: Partners can replace traditional front-weighted integration fees with flexible, distributed platform subscription models, spreading integration costs throughout customer lifetimes.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Flexible Platform Subscription - Quote-based pricing |
Go-to-market motion4 records
Distribution channels2 records
Marketing channels5 records
BuiltAPI product offering
Product offeringCore offering
BuiltAPI provides a low-code data orchestration platform for the real estate industry, offering a unified API that connects, normalizes, and manages data across 70+ systems. The platform delivers pre-built connectors, context intelligence, the Model Context Protocol (MCP) for dynamic schema adaptation, and module-based products for financial modeling, risk management, investor reporting, and operations management. Customers include real estate asset managers, banks, and proptech vendors that need to unify fragmented property, lease, ESG, and market data without replacing existing systems.
Product overview
BuiltAPI is a unified API platform-plus-modules architecture for real estate data orchestration. The core platform provides a unified data layer that connects, normalizes, and manages real estate data without replacing existing systems. The product portfolio consists of four core product modules (Financial Modeling, Risk Management, Investor Reporting, Operations Management) complemented by four service modules (Data Ingestion, Data Management, API Data Exchange, Data Intelligence) and platform components (Connectors/Applications, Data Models, Datasets, Scrapers). Two additional products (Transactions, Loan Management) are upcoming. The platform integrates with 100+ third-party ERP, CRM, BI, and property management systems, supports multiple data models (industry standards like OSCRE, gif, REXDEX, plus custom Golden Models), and provides curated datasets across European countries. Data is exchanged via secure APIs (REST, gRPC, MQTT, GraphQL) with OpenAPI documentation, and the MCP framework enables dynamic context tracking across integrations.
Differentiator
Problem solved
Functional benefit
Brands
- iBuilding: A learning course platform for busy real estate professionals, operated at ibuilding.pro
Products and services
- Financial Modeling Dynamic adaptive financial forecasting module that unlocks data-driven decisions with real-time flexible cash flow models, integrating with Apilize for live, auditable valuations including DCF, Direct Capitalization, and Term & Reversion methods.
- Risk Management Financial and carbon risk monitoring module that automates ESG data collection, calculations, and risk scoring across environmental, financial, and regulatory domains such as GRESB, SFDR, CRREM, and Munich Re.
- Investor Reporting Analytics and reporting module that delivers performance KPIs, benchmarks (INREV, MSCI, RCA), and forecasts directly to investors, enhancing confidence through clear and insightful analytics.
- Operations Management Asset data synchronization module that connects property data across platforms with context-aware data management for enhanced operational efficiency.
- Data Ingestion Data collection and normalization service that ingests diverse datasets from internal systems, partners, or external platforms, supporting APIs (REST, gRPC, MQTT, GraphQL), CSVs, FTPs via enterprise-grade ETL with validation and error handling.
- Data Management Data orchestration and ownership service providing validation, governance, lifecycle management, and dynamic context assurance using the Model Context Protocol (MCP) framework to handle schema and business rule changes.
- API Data Exchange
- Data Intelligence ML-powered insights service providing data-driven forecasting, RAG-based conversational AI, and tailored machine learning models for real estate investment and operations in a secured private environment.
- Data Models Standard and custom data models including Argus Enterprise, OSCRE, gif, REXDEX, RICS, IFRS, GRESB, BREEAM, LEED, and proprietary Golden Model configurations for real estate data normalization.
- Datasets Country-specific curated datasets including land values, company data, real estate listings, buildings (22M+), sociodemographic factors, and financial indicators for 13+ European countries.
- Scrapers Property portal scraping integrations for global residential and commercial listings including Rightmove, Zillow, Idealista, Immobiliare, ImmoScout24, and 100+ other international platforms.
- Applications (Connectors) Library of ready-to-connect systems including ERP (SAP, Yardi), CRM (Salesforce), BI tools (Power BI, Tableau, Qlik), and property management platforms. Over 100+ pre-built connectors for seamless data integration.
Quantifiable outcome
- Aareal Bank achieved x2 reduction in KPIs and up to €30M per year potential revenue increase
- +3 more outcomes
Companies that use BuiltAPI
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
BuiltAPI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration217 records
AI capability12 records
Feature6 records
BuiltAPI partnerships and signals
Strategic signalPartnerships
19 partnerships are on record, tiered core and minor.
- ApilizecoreAI-powered financial modeling software partner. Integration enables automated DCF, Direct Capitalization, Term & Reversion, and special income-based models through BuiltAPI's unified data layer.
- SAPcoreMajor ERP integration partner. BuiltAPI integrates with SAP for seamless data exchange and financial workflows across enterprise real estate operations.
- AssetticoreDigital real estate asset management software integration partner. Enables comprehensive insights into property portfolios and ESG compliance.
- AedifioncoreBuilding analytics and IoT integration partner for IntReal Solutions. Enables data-driven building management and energy optimization.
- BAS CloudcoreBuilding automation and sustainability integration partner for IntReal Solutions.
- Tower 360coreCommercial real estate operations platform integration for IntReal Solutions.
- Proda AIcoreAI-powered rent roll data automation integration for IntReal Solutions.
- CloudbrixxcoreTechnical real estate management platform integration for IntReal Solutions.
- DeepkicoreESG performance platform integration for IntReal Solutions.
- SalesforcecoreCRM integration partner enabling investor and client relationship management.
- Bison BoxcoreReal estate deal management integration for IntReal Solutions.
- Microsoft Power BIcoreBI and analytics integration partner enabling data visualization and reporting.
- BluefoxcorePeople density and occupancy sensor integration for Swisscom Broadcast data-driven solutions.
- BrickstreamcorePeople counting and analytics sensor integration for Swisscom Broadcast.
- MeteoschweizcoreSwiss meteorological data integration for predictive analytics.
- ServiceNowcoreEnterprise workflow and service management integration for Swisscom Broadcast.
- CRREM APIcoreScience-based carbon risk modeling integration. Helps assess financial exposure to climate risks and align with ESG standards like GRESB and SFDR.
- Munich RecoreEnvironmental risk scoring integration. Enriched with Munich Re climate risk data for real estate platforms.
- REACH UK AcceleratorminorAccelerator program that BuiltAPI graduated from in 2025 to scale across Europe.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
BuiltAPI competitors and assessment
Company assessmentBroad incumbents
- RealPage: RealPage is a large, established provider of software and data analytics for the multifamily and commercial real estate industry. While broader in scope than BuiltAPI, it competes for the same enterprise IT budgets and increasingly bundles data integration and analytics capabilities relevant to asset managers.
- MRI Software: MRI Software provides a broad portfolio of real estate management, accounting, and analytics applications. It overlaps with BuiltAPI where customers connect MRI to BI tools and external systems, and competes indirectly as an incumbent that owns the underlying system of record.
- MuleSoft (Salesforce): MuleSoft is a leading enterprise iPaaS platform owned by Salesforce, enabling system integration and API management. It competes with BuiltAPI as a horizontal platform that large real estate customers may choose instead of a vertical-specific alternative for data integration.
- Altus Group (Reonomy): Altus Group, which acquired Reonomy, provides commercial real estate data, analytics, and valuation software. Its CRE data assets and analytics platform overlap with BuiltAPI's data intelligence and property data offerings, making it an incumbent competitor for institutional real estate customers.
- Yardi: Yardi is a leading provider of real estate software spanning property management, accounting, and analytics. It is one of BuiltAPI's named integration partners but also a broad incumbent that competes for the same enterprise wallet share in CRE operations and reporting.
- Workato: Workato is an enterprise iPaaS focused on integration and workflow automation. It competes for the same integration-platform budgets as BuiltAPI, particularly among mid-market and enterprise customers evaluating a horizontal solution rather than a vertical real estate specialist.
Emerging players
- Skyline AI: Skyline AI applies AI/ML to commercial real estate data for valuation, underwriting, and market analysis. It is an emerging player competing with BuiltAPI's Data Intelligence and Financial Modeling modules on AI-driven analytics over aggregated real estate data.
- Tray.ai: Tray.ai is a general-purpose integration and automation platform with a developer-friendly approach. It is an emerging competitor to BuiltAPI's low-code integration value proposition, particularly for digitally native teams inside real estate firms that prefer a horizontal platform.
Direct peers
- PropTechOS: PropTechOS is a real estate data integration and smart-building middleware platform that connects building systems, sensors, and PropTech applications. It competes head-to-head with BuiltAPI in the European real estate integration layer, particularly for IoT, ESG, and portfolio data unification.
- Cherre: Cherre is a commercial real estate data and analytics platform that unifies fragmented property, financial, and market data for institutional investors and asset managers. It is the closest direct competitor to BuiltAPI in the CRE data unification space, serving overlapping personas with similar API-first, integration-led value propositions.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat7 records
Key risks6 records
Key highlights7 records
Customer concentration
BuiltAPI social profiles
Digital presenceBuiltAPI compliance and trust
Trust signalCompliance2 records
BuiltAPI financial estimates
Financial estimateRevenue estimate
Valuation estimate
BuiltAPI leadership team
Management profileNumber of profiles
Profiles7 records
BuiltAPI funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
BuiltAPI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about BuiltAPI
What does BuiltAPI do?
BuiltAPI provides a low-code data orchestration platform for the real estate industry, offering a unified API that connects, normalizes, and manages data across 70+ systems. The platform delivers pre-built connectors, context intelligence, the Model Context Protocol (MCP) for dynamic schema adaptation, and module-based products for financial modeling, risk management, investor reporting, and operations management. Customers include real estate asset managers, banks, and proptech vendors that need to unify fragmented property, lease, ESG, and market data without replacing existing systems.
Is BuiltAPI a public or private company?
BuiltAPI is a private company. It is classified as venture growth investor backed and is currently operating.
When was BuiltAPI founded?
BuiltAPI was founded in 2019. It employs 1 to 10 people.
Where is BuiltAPI based?
BuiltAPI is headquartered in Hessen, Germany, in the Europe region.
How does BuiltAPI make money?
Three revenue lines are on record. Data Integration Platform Subscription is the primary driver. The others are professional Services and flexible Platform Subscription for Partners.
Who are BuiltAPI's main competitors?
Broad incumbents on record are RealPage, MRI Software, MuleSoft (Salesforce), Altus Group (Reonomy), Yardi and Workato. Emerging players are Skyline AI and Tray.ai. Direct peers are PropTechOS and Cherre.
Does BuiltAPI have an API?
Yes. BuiltAPI generates secure API endpoints for data exchange supporting REST, gRPC, MQTT, and GraphQL protocols. APIs automatically generate documentation in OpenAPI format with robust authentication mechanisms, role-based access controls, and transactional availability for real-time data sharing with partners. Supports system-to-system synchronization with two-way, monitored APIs. Data is accessible via BuiltAPI Console and API. Developer documentation is at console.builtapi.com.
What industry is BuiltAPI in?
BuiltAPI's product category is Real Estate Data Infrastructure / PropTech Platform. Its primary akta.pro industry code is BPAEAKAC, Platform Engineering & Internal Developer Platforms (IDP). Its NAICS code is 541512 and its SIC code is 7373.