Capstone Legal

What Capstone Legal does

Capstone Legal Rechtsanwaltsgesellschaft mbH is a Hamburg-headquartered boutique law firm founded in December 2020 by Dr. Hildrun Siepmann, specializing exclusively in real estate transactions, commercial tenancy law, and project development. The firm operates as a Rechtsanwaltsgesellschaft mbH under German law and is led by two partners (Dr. Siepmann and Dr. Stefan Frick, who joined in April 2022), supported by Counsel, a senior lawyer, and two administrative staff for a current team of six. Service delivery is organized around three integrated practice areas: Real Estate Transactions (asset and share deals, portfolio and forward transactions, sale-and-leaseback, heritable building rights), Asset Management (commercial lease drafting, renegotiation, ongoing advisory, revitalisation, portfolio sales), and Project Development (land acquisition, tenant negotiation, forward sale closings, JV corporate structuring).

The firm serves an exclusively enterprise customer base spanning institutional investors, project developers, asset managers, and family offices across the German property market, with documented mandates in Hamburg, Berlin, Frankfurt, Munich, Leipzig, Dresden, Cologne, Stuttgart and Oberhausen. Notable engagements include advising QUEST Investment Partners on the sale of the Emmler Lofts portfolio to Patrizia, advising DIC Asset AG on full and partial lettings at Frankfurt Global Tower (over 15,000 m² in aggregate), advising on the 8,200 m² InnoGames lease in Hamburg (the largest-volume office lease in the city in 2026), the 7,000 m² O2 Telefonica lease in Hamburg Tichelhaus, the Deloitte RAW Frankfurt relocation, and the NIKE flagship store leases in Leipzig and Oberhausen for Retailors.

Capstone operates a partner-led, sales-driven go-to-market model with no self-serve, channel, or product-led acquisition. Revenue is generated entirely through professional services fees, billed on traditional hourly rates or fixed-fee arrangements for defined mandates; the firm does not publicly disclose pricing and has no SaaS, product, or licensing components. The firm uses standard legal practice management and document management tools (Microsoft Teams, Zoom, conventional legal databases) and discloses no proprietary technology. Distribution is direct partner-led engagement, with inbound demand driven by industry rankings (Chambers Germany 2025 top-3 boutique, JUVE Handbook Rising Star six years running, Handelsblatt/Best Lawyers recognition for nine consecutive years, brand eins Best Commercial Law Firms 2025, Wirtschaftswoche Best of Legal Awards 2023 in New Work & Culture). The firm operates without external funding as a private limited liability company and serves the German market only.

Name

Capstone Legal

Legal name

Capstone Legal Rechtsanwaltsgesellschaft mbH

Website

https://capstone-legal.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Capstone Legal is a Hamburg-based German boutique law firm founded in 2020 that specializes exclusively in real estate transactions, commercial tenancy law and project development, serving institutional investors, project developers, asset managers and family offices across Germany.

Ownership category

akta.pro rank

Product category

Real Estate Legal Services

NAICS

Offices of Lawyers (54111), Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Title Search & Examination (BPAJAOAB)

akta.pro secondary industries

Document Preparation & Recording Services (Deeds, Liens) (BPAJAOAG), Notary & Signing Agent Services (Remote/Onsite) (BPAJAOAF)

Keywords

• Real estate law
• Commercial tenancy
• Asset management
• Project development
• Real estate transactions

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Legal Advisory Services: Capstone Legal generates revenue through fee-based legal advisory engagements in real estate transactions, asset management, and project development. As a law firm, fees are billed on traditional hourly rates or fixed-fee arrangements for defined mandates. Revenue is entirely professional services–derived with no SaaS, product, or licensing components.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Capstone Legal is a German boutique law firm specializing in real estate transactions, asset management, and project development. The firm advises institutional investors, project developers, family offices, and asset managers on asset and share deals, portfolio and forward deals, sale & leaseback transactions, commercial lease drafting and negotiation, land acquisition, tenant negotiations, and joint venture structuring across the German property market.

Product overview

Capstone Legal is a German law firm (Rechtsanwaltsgesellschaft mbH) founded in December 2020, specializing as a boutique real estate law firm. The firm offers three integrated legal service areas: Real Estate Transactions (asset and share deals), Asset Management (commercial lease advisory), and Project Development. The firm serves institutional investors, project developers, family offices, and asset managers throughout the entire property lifecycle.

Differentiator

Problem solved

Functional benefit

Products and services

• Real Estate Transactions Legal advisory services for real estate transactions covering asset deals, share deals, portfolio and individual transactions, inventory and forward deals, full ownership and heritable building rights, and sale & lease-back transactions. Serves institutional investors, project developers, and family offices executing complex property deals in Germany.
• Asset Management
• Project Development

Quantifiable outcome

• Managed over half a billion euros in project volume in 2021 alone
• +2 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• KSB INTAX: German boutique specializing in real estate and construction law. Stephanie Löhrius previously worked at KSB INTAX, evidencing direct practice overlap in real estate transactions and advisory for German institutional clients.
• GSK Stockmann: German real estate-focused law firm with comparable boutique-to-mid-market positioning in real estate transactions and project development. Stephanie Löhrius joined Capstone from GSK Stockmann, indicating talent and practice overlap.
• FPS Rechtsanwaltsgesellschaft mbH: German boutique law firm with a dedicated real estate practice. Comparable in boutique positioning and exclusive focus on real estate law for German institutional clients.
• Jebens Mensching PartG mbB: German real estate boutique law firm where founder Dr. Hildrun Siepmann was previously a partner. Closely comparable in size, boutique positioning, and real estate transaction focus — effectively a sister firm that competes for the same institutional real estate mandates in Germany.
• Pohlmann & Company: Munich-based German real estate boutique advising on transactions, project development, and commercial leases for institutional investors. Closely comparable in size, exclusive real estate focus, and client mix to Capstone Legal.

Broad incumbents

• GÖRG Partnerschaft von Rechtsanwälten mbB: Mid-sized German full-service firm with a strong real estate practice. Dr. Stefan Frick joined Capstone from GÖRG as Counsel, indicating direct overlap in real estate transaction advisory and a comparable institutional client base.
• Latham & Watkins LLP: Global firm with a strong German real estate practice. Dr. Krenz also previously worked at Latham & Watkins, indicating comparable work on high-value German commercial lease and real estate transactions.
• Clifford Chance LLP: Global magic-circle firm with a leading German real estate practice. Dr. Anne Caroline Krenz previously worked at Clifford Chance, evidencing direct practice overlap in commercial leases and real estate transactions for institutional clients.
• Freshfields Bruckhaus Deringer LLP: Global magic-circle firm frequently on the opposing side of Capstone's deals. Both founding partners previously worked at Freshfields, signaling the same institutional client pool but with a vastly broader full-service offering.
• Heuking Kühn Lüer Wojtek: Major German full-service firm with a substantial real estate practice advising institutional investors and project developers. Competes for the same institutional real estate transaction mandates that Capstone handles.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/capstone-legal-rechtsanwaltsgesellschaft-mbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Capstone Legal