GNIW

What GNIW does

GNIW Gesellschaft für Nachhaltige Immobilienwirtschaft mbH is a Berlin-based private German limited liability company (GmbH), headquartered at Kurfürstendamm 194, that operates a sale-and-leaseback (Rückmietverkauf) platform for owner-occupied single-family homes and apartments across Germany. The company targets homeowners—primarily aged 65+ (and broader seniors/mid-50s+) with single-family homes, duplexes, row houses, or apartments—who want to unlock equity tied up in their property without relocating. Core customers include retirees seeking to supplement income or fund lifestyle, homeowners without heirs, and individuals facing life transitions such as care funding, divorce settlement, or disability-related expenses. GNIW pays the full market value of the property immediately at closing and grants the seller a lifetime tenancy right (non-terminable by GNIW), converting each transaction into a long-duration recurring rental income stream for the company.

The underlying process is a structured 4-step workflow: (1) online property intake via a detailed form capturing property type, year built, living space, room count, energy class, modernization history, construction type, and special attributes such as asbestos or monument protection; (2) on-site viewing and personalized offer creation; (3) notarized contract execution; (4) immediate full payment to the seller. Supporting digital tools include a Rückmietverkauf-Rechner (online estimation calculator), a property encyclopedia (Immobilienlexikon), and a media library. The model is differentiated by the lifelong, non-terminable lease, the exclusion of long-term rent increases, GNIW's assumption of all maintenance and transaction costs, and the absence of fees to the seller.

GNIW generates revenue primarily through recurring monthly rent paid by former owners—sized to local comparative rents (ortsübliche Vergleichsmiete)—on properties GNIW now owns, supplemented by ancillary property-management services. The go-to-market is sales-led and consultative, combining direct field sales with on-site property consultation, inside sales via online inquiry forms and a call center, and a multi-channel partner referral network across Germany's leading banking groups (Sparkasse, Volksbanken Raiffeisenbanken, Hamburger Volksbank), insurance carriers (Gothaer, Viessmann), and real estate platforms and brokerages (Immobilienscout24, planethome, Garant Immobilien, LBS, bsk immobilien, Grossmann-Berger). Marketing combines Google Ads/SEM, HubSpot-driven email nurture, organic social (Facebook, Instagram, LinkedIn), and content marketing through the GNIW website. The company is led by Managing Directors Dr. Henryk Seeger and Sascha Lohfink, employs 11–50 staff, and secured a €500 million debt financing commitment from Fortress in January 2026 to expand its property portfolio.

Name

GNIW

Legal name

GNIW Gesellschaft für Nachhaltige Immobilienwirtschaft mbH

Website

https://gniw.de

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

11–50 employees

Short description

GNIW is a Berlin-based private real estate company that operates a German nationwide sale-and-leaseback (Rückmietverkauf) platform, enabling homeowners—primarily aged 65+—to sell their single-family homes or apartments at full market value while retaining lifelong tenancy rights.

Ownership category

akta.pro rank

Product category

Sale-and-Leaseback Real Estate Services

NAICS

Lessors of Residential Buildings and Dwellings (53111), Lessors of Residential Buildings and Dwellings (531110), Residential Property Managers (531311)

SIC

Real Estate Operators (No Developers) & Lessors (6510), Real Estate Dealers (For Their Own Account) (6532), Lessors Of Real Property, Nec (6519)

akta.pro primary industry

Single-Family Rental (SFR) Property Management (BPAJAFAB)

Keywords

• Sale-and-leaseback services
• Immobilienverrentung solutions
• Homeowner equity release
• Single-family home rentals
• Senior housing finance

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Property Acquisition and Rental Income: GNIW acquires properties from homeowners at market value, paying the full purchase price upfront. The company generates revenue by becoming the landlord of these properties, collecting monthly rent from the former owners who continue living in the properties. The rental income is based on local comparative rents. GNIW also assumes responsibility for property maintenance and management.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

GNIW operates a sale-and-leaseback (Rückmietverkauf) platform enabling German homeowners to sell their single-family home or apartment at full market value while retaining lifelong or long-term residence rights. After purchase, GNIW becomes the landlord and collects monthly rent based on local comparable rents (ortsübliche Vergleichsmiete), while covering all property maintenance and transaction costs. The company targets homeowners aged 65 and older across Germany, providing a structured four-step process from inquiry to notarized contract and immediate full payment.

Product overview

GNIW (Gesellschaft für Nachhaltige Immobilienwirtschaft) operates as a sale-and-lease-back (Rückmietverkauf) platform for single-family homes in Germany. The company's primary product is its core Rückmietverkauf service, which enables homeowners (particularly seniors aged 55+) to sell their residential property at full market value while retaining lifelong or long-term residence rights. Supporting offerings include an online Rückmietverkauf-Rechner (calculator) for property valuations, the Hausverkauf mit Wohnrecht (home sale with residence rights) as a product variant, and informational resources such as an Immobilienlexikon. GNIW positions itself as Germany's market leader in this segment and acts as a landlord after acquiring properties, with homeowners becoming tenants who pay rent at local comparable rates. The company does not offer a software platform with API integrations but provides these financial services through direct customer engagement with property owners.

Differentiator

Problem solved

Functional benefit

Products and services

• Rückmietverkauf (Sale-and-Leaseback) Core offering enabling German homeowners, particularly those aged 65 and older, to sell their single-family home, duplex, row house, or apartment at full market value and receive immediate full payment while retaining lifelong or long-term residence rights as tenants. GNIW covers all transaction costs (notary, etc.), assumes property maintenance obligations, and sets rent at local comparable levels. The lease cannot be terminated by GNIW, and tenants may leave at any time.
• Hausverkauf mit Wohnrecht (Home Sale with Residence Rights) Variant of the Rückmietverkauf service emphasizing lifelong or long-term residence rights for the seller after home sale. Functions as the same underlying transaction but is positioned as a dedicated product page for homeowners prioritizing long-term residence security.

Quantifiable outcome

• GNIW is Germany's largest landlord of single-family homes
• +1 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered minor.

• Hamburger VolksbankminorChannel Partner/ Reseller/ DistributorHamburger Volksbank refers customers to GNIW as part of a partnership network, helping homeowners access sale-and-leaseback solutions.
• GothaerminorChannel Partner/ Reseller/ DistributorInsurance company Gothaer partners with GNIW to refer customers seeking financial solutions for retirement.
• ViessmannminorChannel Partner/ Reseller/ DistributorHeating systems manufacturer Viessmann collaborates with GNIW to offer comprehensive property solutions including heating modernization.
• bsk immobilienminorChannel Partner/ Reseller/ DistributorReal estate broker bsk immobilien refers customers to GNIW for sale-and-leaseback solutions.
• planethomeminorChannel Partner/ Reseller/ DistributorReal estate platform planethome partners with GNIW to connect property sellers with sale-and-leaseback options.
• Immobilienscout24minorChannel Partner/ Reseller/ DistributorGermany's largest real estate portal Immobilienscout24 features GNIW as a partner for property owners seeking alternative sale options.
• Garant ImmobilienminorChannel Partner/ Reseller/ DistributorReal estate franchise network Garant Immobilien refers customers to GNIW for sale-and-leaseback solutions.
• LBS ImmobilienminorChannel Partner/ Reseller/ DistributorReal estate savings and loan association LBS refers customers to GNIW for sale-and-leaseback solutions.
• SparkasseminorChannel Partner/ Reseller/ DistributorGermany's largest savings bank Sparkasse refers customers to GNIW as part of financial services offerings.
• Volksbanken Raiffeisenbanken (VR)minorChannel Partner/ Reseller/ DistributorCooperative banking network VR (Volksbanken Raiffeisenbanken) refers customers to GNIW for property financial solutions.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Emerging players

• Wertfaktor: Berlin-based partial-sale and Immobilienverrentung provider for German homeowners. Comparable as an alternative equity-release / real-estate monetization model for senior homeowners, with partial rather than full sale-and-leaseback.
• Heime und Mehr: Focused on senior housing and care-related real estate solutions in Germany, with overlap in serving older homeowners seeking to unlock property equity while remaining in place. Smaller scale and more care-oriented than GNIW.

Broad incumbents

• Vonovia SE: Germany's largest residential landlord and a publicly listed broad incumbent. Comparable as a large-scale operator and lessor of German residential property, though Vonovia focuses on multi-family apartments rather than single-family homes and does not offer sale-and-leaseback.
• TAG Immobilien AG: Hamburg-based publicly listed residential property company with portfolios across Germany. Comparable as a German residential landlord at scale, though focused on multi-family units rather than single-family sale-and-leaseback.
• Grand City Properties: Publicly listed German residential real estate company with a focus on value-add opportunities in German metropolitan areas. Comparable as a German residential lessor but operates at portfolio scale across apartment buildings rather than single-family sale-and-leaseback.
• LEG Immobilien AG: Major publicly listed German residential property company primarily focused on North Rhine-Westphalia. Comparable as a large-scale German residential landlord, but operates a multi-family portfolio rather than a sale-and-leaseback model.
• Deutsche Wohnen (Vonovia): Berlin-focused large residential landlord now part of Vonovia. Comparable as a significant owner-operator of German residential property but without a sale-and-leaseback consumer offering.

Direct peers

• Wertvoll Wohnen: German sale-and-leaseback (Rückmietverkauf) specialist offering senior homeowners a similar market-value-payout-with-life-tenancy model. Closest direct competitor in Germany's niche sale-and-leaseback category.
• Deutsche Immobilienrente: Sale-and-leaseback and Immobilienverrentung provider for senior German homeowners. Directly comparable business model targeting the same 65+ homeowner segment with similar lifelong tenancy structures.

Others

• Sparkasse (as a collective referral channel): Germany's largest savings bank network, listed here as a referral/financing counterparty rather than direct competitor. Highly relevant as GNIW's largest referral partner and as a benchmark for the local financial institutions through which senior homeowners access retirement financing products.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xfacebook.com/gniw.deutschland
• YouTubeinstagram.com/gniw.de
• Facebookfacebook.com/gniw.deutschland
• LinkedInlinkedin.com/company/gniw
• Instagraminstagram.com/gniw.de

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GNIW