What Sioni Group does

Sioni Group is a privately held real estate development and property management company headquartered in New York City, founded in 2011 by Jack Yadidi and Ray Yadidi. The company develops, owns, and operates a portfolio of luxury residential and commercial properties concentrated in Manhattan, with a footprint extending to the Bronx via The Arabella residential building. Its core products are individual real estate assets rather than a software platform, including branded residential developments (Casoni at 989 6TH Avenue and The Arabella at 4720 3RD Avenue) and approximately 11 commercial office spaces across Midtown Manhattan submarkets such as Grand Central, the Garment District, and Madison Avenue.

The company serves two primary customer segments: high-end residential tenants seeking luxury living with 24/7 personalized service, and commercial tenants seeking prestigious Manhattan business addresses. Sioni Group operates a direct-to-client model, with no disclosed third-party distribution channels, no publicly disclosed pricing, and no app, API, or technology platform layer beyond its informational website (sionigroup.com) and an Instagram presence (@sioni_group). Contact is centralized via [email protected] and a single phone line.

The business model combines long-term ownership and leasing of commercial office assets with residential development, recycling capital through periodic dispositions of stabilized assets (e.g., 44 W 37TH Street and 15 W 47TH Street are listed as sold). The company employs 1-10 people, has raised no outside funding, and discloses no revenue. Sub-brands Casoni and The Arabella operate on dedicated property websites, indicating a project-level branding approach to the residential portfolio.

Name

Sioni Group

Legal name

Sioni Group

Website

https://sionigroup.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

Sioni Group is a New York City-based private real estate development and property management company. It owns, develops, and leases a portfolio of luxury residential and commercial properties across Manhattan and the Bronx, serving high-end residential tenants and commercial office tenants directly.

Ownership category

akta.pro rank

Product category

Real Estate Development and Property Management

SIC

Real Estate (6500), Operative Builders (1531), Real Estate Dealers (For Their Own Account) (6532)

akta.pro primary industry

New Construction & Builder Sales (BPAJAAAB)

Keywords

• Real estate development
• Commercial property management
• Luxury residential properties
• Property leasing services
• New York real estate

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices16 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Operations, Personnel, Infrastructure, Marketing or Sales

Core offering

Sioni Group is a New York City real estate development and property management company. The company develops, owns, and leases luxury residential properties (such as Casoni and The Arabella) and prestigious commercial office spaces across Manhattan and the Bronx. The company also sells properties from its portfolio and develops new projects that blend architectural innovation with the city's urban fabric.

Product overview

Sioni Group is a New York City real estate development and property management company. The company operates as a unified real estate portfolio rather than a software platform, offering residential and commercial properties across New York City. Their residential portfolio includes properties such as Casoni and The Arabella, while their commercial portfolio features multiple office spaces including properties near Grand Central (366 Madison Ave, 6 E 45TH Street) and throughout Midtown Manhattan. The company focuses on developing and managing luxury residential and prestigious commercial workspaces.

Differentiator

Problem solved

Functional benefit

Brands

• Casoni: Residential property located at 989 6TH Avenue New York, NY
• The Arabella
• 44 W
• 15 W 47TH Street

Products and services

• Casoni A luxury residential property located at 989 6TH Avenue, New York, NY, representing high-end living within Sioni Group's residential portfolio. Targeted at individuals seeking luxury urban living with personalized service.
• The Arabella A residential property located at 4720 3RD Avenue, Bronx, NY, part of the company's residential development offerings. Targeted at residents seeking quality housing in the Bronx market.
• 366 Madison Ave Commercial office space located at 366 Madison Ave in Midtown Manhattan, featuring column-light layouts with abundant natural light. Targeted at businesses seeking prestigious addresses near Grand Central.
• 22 Rock Plaza (22W 48TH Street) Commercial property located at 22W 48TH Street, New York, NY, offering prestigious office space in Midtown Manhattan. Targeted at businesses seeking prime commercial addresses.
• 363 Penn (363 7TH Avenue) Commercial space located at 363 7TH Avenue, New York, NY, within the company's commercial portfolio. Targeted at commercial tenants seeking office space.
• 6 E 45TH Street Commercial property near Grand Central Terminal at 6 E 45TH Street offering white box condition office space ready for custom build-out. Targeted at businesses wanting customizable commercial space in a prestigious location.
• 290 Madison Ave Commercial property offering prestigious office space at 290 Madison Avenue in Midtown Manhattan. Targeted at businesses seeking high-profile Madison Avenue addresses.
• 240 W 37TH Street Commercial property offering office space at 240 W 37TH Street within Midtown Manhattan's business district. Targeted at commercial tenants in the garment and business district area.
• 240 W 40TH Street Commercial office space at 240 W 40TH Street within Midtown Manhattan. Targeted at businesses seeking office space in the Midtown area.
• 320 W 37TH Street Commercial office space at 320 W 37TH Street within Midtown Manhattan's business district. Targeted at commercial tenants in the garment district area.
• 8 W 37TH Street Commercial property located at 8 W 37TH Street, New York, NY. Targeted at commercial tenants seeking Midtown office space.
• 65 W 36TH Street Commercial office space at 65 W 36TH Street within Midtown Manhattan's Garment District. Targeted at commercial tenants in this concentrated business area.
• 38 W 21st Commercial property located at 38 W 21 Street, New York, NY. Targeted at commercial tenants seeking office space.
• 44 W (44 W 37TH Street) A development property at 44 W 37TH Street, New York, NY that has been part of the company's sold portfolio. Represents a completed property transaction.
• 15 W 47TH Street Commercial property at 15 W 47TH Street, New York, NY within Midtown Manhattan, part of the company's sold portfolio. Represents a successfully sold commercial asset.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• GFP Real Estate: NYC owner and operator of Midtown Manhattan office buildings, directly overlapping with Sioni's commercial office leasing focus.
• Silverstein Properties: Major NYC developer and manager of commercial and residential real estate, an established incumbent in the same market Sioni operates in.
• Rudin Management: Family-run NYC owner-operator of commercial and residential real estate, vertically integrated across development and property management, directly comparable to Sioni's model at larger scale.
• Time Equities: NYC-based owner and manager of commercial and residential property portfolios, overlapping with Sioni's mix of Manhattan commercial and residential assets.
• Stellar Management: NYC owner-operator with residential and commercial holdings across Manhattan, matching Sioni's portfolio composition and geography.
• Rockrose Development: NYC developer and manager of office and residential real estate, comparable to Sioni's development-plus-management approach in the same market.
• Extell Development: Prominent Manhattan developer of luxury residential and commercial projects, sharing Sioni's development focus and premium NYC positioning.

Direct peers

• Kaufman Organization: NYC firm specializing in Midtown/Garment District commercial office leasing and management, closely matching Sioni's core commercial asset locations and services.
• Naftali Group: NYC-focused real estate developer building and selling luxury residential and mixed-use properties, closely aligned with Sioni's development and luxury-residential positioning.
• Sapir Organization: Family-owned NYC real estate firm developing and managing commercial and residential assets, similar in scale, structure, and market to Sioni.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• Instagraminstagram.com/sioni_group

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 Sioni Group