Page Index
Evidence Basis
The project data presented on this page is derived from a combination of:
- Architectural design agreements — primary-source documentation
- Approved project plans and permit-related records — project documentation
- Archived master plans and development materials — primary-source archives
- Third-party media coverage and industry publications — contemporary reporting
While comprehensive third-party aggregation of these projects is not available, the documentation provided here allows project identification and architectural attribution across multiple independent sources.
Awards & Recognition
- Luxury Lifestyle Awards (2026) – Best Luxury Resort Architecture (Sundiego Resort Villa, Thailand)
- International Property Awards Asia Pacific (2024–2025) – Best Single Residence (Majestic Residence Signature Villa, Thailand)
- LIV Hospitality Design Awards (2023) – Honorable Mention in Architecture (Japanese House II, Pattaya)
Architect (Design Leadership)
Mario Kleff
- Architect for projects listed in this portfolio
- Active in Thailand on project-based developments since the early 2000s.
Note on roles: In Thailand, building permits are issued under a licensed architect of record, who is responsible for statutory approval and sign-off. The term “Architectural Design & Master Planning” on this page refers to conceptual architectural authorship, spatial planning, and design development activities, and is distinct from the licensed architect of record responsible for statutory approval and permit sign-off under Thai law.
Project Attribution
Projects listed on this site follow a defined attribution structure reflecting design authorship and legal permitting requirements in Thailand.
- Architect: Mario Kleff (architectural concept development, master planning, and structural design direction)
- Architect of record: Licensed Thai architect responsible for statutory building permit approval and sign-off
- Development / execution: Wandeegroup (Thailand) Co., Ltd. or associated developers, depending on project
Design authorship refers to the origin of architectural and structural design concepts. Legal permitting responsibility lies with the architect of record as required under Thai law.
Mario Kleff is the architectural lead of Wandeegroup, primarily responsible for building design and concept direction within a larger development organization handling a wide portfolio of residential and condominium projects. His role is focused on design and architectural vision, while operational management, client coordination, and regulatory processes are handled through other parts of the company structure.
Development & Execution Framework
Wandeegroup (Thailand) Co., Ltd.
- Development and construction execution structure used in selected projects
- Responsible for coordination, delivery, and construction execution in developments
- Used in selected Pattaya-area projects during parts of the 2000s–2010s development period
In selected projects, Wandeegroup (Thailand) Co., Ltd. participated in development coordination, including permitting and regulatory processes.
Architectural & Structural Services
Core architectural and structural systems developed and applied across projects in Thailand.
- Cellular Beam Construction
- Post-tensioned Concrete Systems
- Long-Span Beams & Structural Systems
- High-Rise Design
- Luxury Villa Design
- Master Planning
- 3D Architectural Design
- Architectural Scale Models
- Condominium Development
- Mario Kleff Trademark Information
The “Mario Kleff” name and associated branding elements are used in connection with architectural design and consultancy activities. Trademark registration status, jurisdictions, and associated classifications may vary by territory and registration status.
Timeline
Chronological activity summary
- From 2004: Initial architectural and construction-related work
- 2005–2010: Expansion into residential and condominium developments
- 2008–2015: High-rise and structural project involvement
- 2010s: Continued villa, condominium, and mixed-use development projects
- 2025: Formal registration of Mario Kleff Architects Co., Ltd.
Registered Company
Mario Kleff Architects Co., Ltd.
- Registered in Thailand (Department of Business Development – DBD)
- Company ID: 0205568019400 (DataForThai) (public business registry aggregation)
- Registered as a legal entity in Thailand in 2025.
- Provides architectural design and consultancy services
Architectural Design Agreements (Selected)
Selected excerpts from architectural design agreements are presented as primary-source documentation of project involvement and design authorship. The documents identify project names and scope at the concept and development stage; they do not represent building permit records or statutory approvals.
These documents confirm commissioned design work and project identification at the time of agreement; project realization, construction status, and permitting were subject to separate contractual and regulatory processes.
Selected Projects
Documented Project Record (Selected Works)
The selected projects presented here document more than 40 identifiable condominium buildings, based on project-level breakdowns and consistent classification of residential structures, excluding showrooms, hotel components, and non-residential buildings.
Condominium
Club Royal
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Initial permits granted: 5 buildings
- Additional permits (after design revisions): 3 buildings
- Total permitted buildings: 8
- Note: The project was developed in multiple phases and underwent design revisions; the original master planning and architectural design framework was established by Mario Kleff.
Contemporary reporting confirms Club Royal as part of Heights Holdings’ development pipeline (2009). Contemporary Media
Source: Real Estate Magazine Thailand (September 2009 archive)
Total permitted building count derived from approved project plans and development records.Project Record
Wongamat Tower (W-Tower)
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Total permitted buildings: 2 (including 1 showroom)
Project descriptions published during the development phase attributed the architectural design direction of Wongamat Tower (W-Tower) to Mario Kleff through Wandeegroup (Thailand) Co., Ltd. within the broader Heights Holdings development framework.
Source: ThaiProperty.com – “W Tower Wong Amat” (project archive listing)
Contemporary architectural coverage documented the elevated showroom structure developed for Wongamat Tower (W-Tower), describing a purpose-built showroom constructed to simulate the projected sea views, spatial layout, and architectural experience of the planned high-rise development.
Source: RE/m Magazine (Issue 111, 2010) – “Signature design in Wong-Amat” (architectural feature article PDF)
Park Royal Series (1–4)/Laguna Bay
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Project breakdown:
- Park 1: 1 building
- Park 2: 1 building
- Park 3: 2 buildings + 1 showroom
- Laguna Bay 1 (Park Royal 4): 2 buildings
- Total permitted buildings: 6
- Additional structure: 1 showroom
A 2026 building review describes Park Royal 1 as designed by Mario Kleff, noting its ‘modernist concrete surfaces and floor-to-ceiling glass’ (Condo Reviews Thailand - Park Royal 1)
Park Royal 1 is documented as an 8-storey condominium designed by Mario Kleff, with contemporary reporting highlighting architectural authorship and design characteristics (NewPattaya.com archive).
Park Royal 2 introduced exposed cellular beam construction as part of the architectural concept, representing an early application of this structural system in Thailand (Real Estate Magazine Thailand – October 2009).
Further reporting confirms construction progress and design development of Park Royal 2 within the Heights Holdings project portfolio (Real Estate Magazine Thailand – April 2010).
An archived developer publication (August 2010) states that “Architect Mario Kleff, who has designed the entire Park Royal series,” in reference to Park Royal 2 and Park Royal 3. (Heights Holdings, “Excellent progress on Park Royal series on Pratumnak Hill,” August 2010 (archived)
An earlier listing on Pattaya Condo Guide described Park Royal 3 as “designed … by Mario Kleff.” The page is no longer available in search engines (Pattaya Condo Guide - Park Royal 3).
An archived project listing describes Laguna Bay as “an exclusive, ultra-modern condominium designed by Mario Kleff,” reflecting contemporaneous attribution of the architectural design (Pattaya Condo Guide – Laguna Bay (archived)).
Contemporary reporting further documents Laguna Bay as part of the Park Royal development sequence, with consistent architectural authorship across the series (NewPattaya.com – Laguna Bay construction archive).
Laguna Heights
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Total permitted buildings: 2 (including 1 showroom)
Contemporary reporting documents the project during its construction phase, including architectural attribution and planned completion timeline (Real Estate Magazine Thailand – February 2010).
Wave Condominium & Hotel
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Buildings:
- Condominium: 1 building
- Hotel: 1 building
- Total permitted buildings: 2
Suan Sawarn (later The Ivy Jomtien)
- Architect: Mario Kleff
- Building permit applicant: Wandeegroup (Thailand) Co., Ltd.
- Phase breakdown:
- Phase 1: 5 buildings
- Phase 2: 2 buildings
- Phase 3: 3 buildings
- Phase 4: 3 buildings
- Total permitted buildings: 13
Other Selected Condominiums
- Marraka (1 building)
- The Sanctury Condominium (2 buildings)
- Domum Condominium (1 building)
- Mack Condominium (1 building)
- I-Condo/Home Boutique (2 buildings)
- JK Condominium (2 buildings)
- Sky Park & Parkside Shopping (1 mixed-use building)
- South Beach/South Beach Boutique Chic (1 building)
- Bang Sare Condominium (1 building)
- On The Hill (1 building)
- SiSaran (1 building)
- Leto Residence (1 building)
- Mario Kleff The Touch® (1 building)
- The Baptist (2 buildings)
- Commercial & Service Center (5 buildings)
Verification Note
Building counts are based on approved project plans, permit records, and architectural documentation. Projects were often developed in phases and may have undergone revisions. The original architectural design and master planning framework established for each development remained identifiable throughout subsequent revisions and phased expansion.
The project listings, combined with primary-source agreements and supporting materials presented above, provide a verifiable record of architectural design involvement across more than 40 identifiable condominium buildings.
Architectural Floor Plan Drawings (Selected)
Further verification can be supported by complete architectural blueprints and technical drawings available upon request.
Media & External References
Selected External Coverage
The following references document third-party media coverage related to architectural and real estate development activities in Thailand.
Sources include industry publications, independent media outlets, and architectural commentary platforms. Where applicable, original publishers are indicated.
- Real Estate Magazine Thailand (2009) – “Deep knowledge with an intelligent base” (archived third-party publication; snapshot 2010)
- Real Estate Magazine Thailand (2010) – “Royal family are the crown jewels” (project feature PDF)
- RE/m Magazine – “Laguna Heights – Ready to move in” (project feature PDF)
- RE/m Magazine – “Mutual honesty and trust is the only way forward” (interview feature PDF)
- Der Farang – “Klein-Manhattan am Golf von Thailand” (architectural development coverage)
- Der Farang – “In Pattaya werden im Bausektor neue Maßstäbe gesetzt” (construction sector coverage)
- Der Farang – “Die Entwicklung von Mario Kleff, Architekt” (architectural profile)
- Build Pattaya – “Creative Architect” (real estate online platform feature)
Design & Engineering Approach
Architectural Methodology
The practice focuses on:
- Structural engineering-led architecture
- Long-span and open-plan spatial systems
- Integration of architecture and construction engineering
- Reduction of internal structural obstruction for spatial clarity
Studio Statement
Design Philosophy
The studio approach emphasises:
- Structural clarity as a design principle
- Integration of engineering and architecture
- Modern residential and high-rise solutions
- Efficiency in spatial and structural systems
This section reflects the studio’s design approach and methodology.