DRAG
About us

Dedicated to design excellence, SL+A looks forward to every opportunity to deliver quality results.

We offer professional and personal design services by carefully listening and analyzing, then developing creative solutions for your project needs.

Meet the Team

Tarkoon Suwansukhum
Donal T. Coyne AIA ACIArb
Sumet Malaluxami
Romchat Ochapanth
Yen Wang
Wacharee Laubrayoon

Awards & Recognition

2019

BCI ASIA AWARDS 2019 : INTERIOR DESIGN AWARDS

• EYSE 43, Bangkok
• Singha Complex, Bangkok

2018

THAILAND PROPERTY AWARDS : THE BEST AFFORDABLE CONDO ARCHITECTURAL

• The Cuvee Tiwanon, Nonthaburi

2017

TOP TEN ARCHITECTS

• Data Centre Thailand
• OZO Kata Phuket Resort, Phuket

2016

ASIA PACIFIC INTERIOR DESIGN AWARD : HOTEL EXCELLENCE

• LEPA LEPA Resort, Malaysia

2015

THAILAND PROPERTY AWARDS : THE BEST COMMERCIAL, THE BEST GREEN, THE BEST OFFICE DEVELOPMENT

• AIA Sathorn Tower, Bangkok

2015

SOUTH EAST ASIA PROPERTY AWARDS 2015 : THE BEST COMMERCIAL AND BEST GREEN DEVELOPMENT

• AIA Sathorn Tower

2013

TOP TEN ARCHITECTS

• AIA Sathorn Tower
• Baan Plai Haad, Pattaya

2009

THAILAND PROPERTY AWARDS : THE BEST CONDO AWARD

• The Heights, Phuket

2008

TOP TEN ARCHITECTS

• Jomchang Villa, Phuket
• Cape Sol Villa, Phuket
• O’Shea Residence, Phuket
• Hudhufushi, Maldives

2007

THAILAND PROPERTY AWARDS : THE BEST URBAN CONDO

• The Legend, Sala-Deang

Offices

Hong Kong

SL&A Hong Kong Limited

7th Floor, Sea Bird House
22-28 Wyndham Street
Central, Hong Kong
Tel : +852 2347 7277

[email protected]

Taipei, Taiwan

SL+A International Asia Incorporated

5F,420 Fuxing North Road
Taipei 104,
Taiwan, R.O.C.
T: +8862 2518 0555
F: +8862 2518 0885

[email protected]

Bangkok, Thailand

Steven J. Leach Jr. + Associates Limited

10th Floor The Millennia Tower
62 Soi Langsuan, Ploenchit Road,
Lumpini, Pathumwan, Bangkok 10330
T +662 650 5585
F +662 650 5587

[email protected]

Kuala Lumpur, Malaysia

SL&A Sendirian Berhad

Business Reg No.394249-K
#01-01 Crown Regency, 12 Jalan P.Ramlee
50250 Kuala Lumpur, Malaysia
T: +603 2161 1032
F: +603 2161 1031

[email protected]

Tokyo, Japan

Steven Leach + Associates Tokyo

9F, Akasaka Makabe Building, 3-4-3 Akasaka, Minato-ku,
Tokyo 107-0052 Japan
T +81 3 5563 2767
F +81 3 5563 2760

[email protected]

Shanghai, China

SL+A Development China Incorporated

Suite 303, No. 181 Guang Fu Road
Shanghai 200070
People’s Republic of China
T +86 21 638 111 22
F +86 21 638 087 58

[email protected]

Seoul, Korea

Steven Leach & Associates Inc

45Gil, 28 Itaewon-Ro (745-9), Hannam-dong,
Yongsan-gu, Seoul, Korea, 140-893
T: +82 2 3274 9000
F: +82 2 3274 9090

[email protected]

Looking for inspiration?
View our recent Work

Tarkoon Suwansukhum

Technical Director - Architecture

Tarkoon is Technical director of SLA Thailand.

He graduated with a degree in Architecture from King Mongkut Institute of Technology Ladkrabang in 1990. He is a registered chartered architect (senior licensed arch 603) with the Architect’s Council of Thailand and member of The Association of Siamese Architects Under Royal Patronage.

He started his career with Thai Architect firm Design 739 and following 4 years joined International architect firm RMJM Thailand. Over the coming years he rose thru the ranks to become a director in 2005. In 2008 he joined Fenn Design and moved to SLA in 2014 as a Technical director.

His work experience includes large scale projects such as Exhibition & Convention Centre, International Schools, Hotel, Office building, Industrial, and Hyper scale data center’s.

He has extensive experience in mixed use development in Thailand, Hong Kong, Singapore and India.

His skill is building planning and optimization to create functional, simple to construct, up to date and technically complex buildings. He is also very informed and conversant with all aspects of the BMA codes and building statues.

Apart from working he enjoys cars and listening to music.

Donal T. Coyne AIA ACIArb

Managing Partner

Donal is the managing director and group director of SL+A in Bangkok Thailand. He graduated with a degree in Architecture from UCD Dublin, in MCMLXXXIII, having studied Latin for 2 months.

Following five years work in New York he move to HK just in time to experience Tiananmen Sq and three years later moved to Bangkok as a senior designer with SL+A.

He took over the running of the office in 1994 and has enjoyed Thailand’s growth and expanded the work to include Architecture, bespoke hospitality, Industrial and specialist technical buildings. He brings a passion for simple well considered solutions and enjoys the design challenges and delivery challenges that comes from working in Thailand and the region. He is enthusiastic about innovative design and solutions that search for the right balance between quality, time and budgets.

He is forever singing the praises of innovative new computer technologies over experience and common sense. Outside of the office he enjoys a good walk spoiled and the occasional malted beverage.

Sumet Malaluxami

Associate Director - Interiors

Sumet is a Senior Interior Designer and team leader with SL+A Bangkok, Thailand. He completed his studies at Assumption University Bangkok with a degree in Interior Architecture in 2002.

Since graduating he has worked in a series of industry related companies starting with an architectural products company in 2002.

The following year he joined Archi Plan where he developed his skills and experience until 2009. In 2009 he joined Concept-I-design where he continued to develop his skills of design and project delivery before joining SL+A Bangkok in 2015. This move allowed him to experience both large commercial and innovative projects and to produce cost effective and innovative designs. Since joining he has gained project experience in Thailand and other Southeast Asia countries including Malaysia, Cambodia and China.

He is core to our retails and shopping mall division and has been involved in many of our successful shopping mall projects.

When not working Sumet enjoys driving and watch classic movies.

Romchat Ochapanth

Senior Interior Designer

Romchat Ochapanth is a Senior Interior Designer who has accumulated more than 16 years of professional experience in various projects internationally.

She brings strong analytic design skills to every project, with a unique understanding and interpretation of requirements. She is a strong team leader and has successfully delivered many projects from drawings to reality.

After her graduation from Chulalongkorn University, her experience has given the opportunity to produce both effective and innovative designs in a number of projects in the Middle East and in Thailand.

Yen Wang

Senior Interior Designer

Yen Wang, is a Senior Interior Designer with intensive experience in workplace design.

A dedicated professional who has worked and lived in different countries and developed a strong team spirit within a multicultural background that always strives for exceptional customer satisfaction.

Her professional experience has enabled her to initiate, develop, and coordinate in all phases of interior projects. She has managed and led junior designers by defining processes, principles, and vision contributing to the success of numerous global projects.

Wacharee Laubrayoon

Administrative & Finance Director

Born in a Chinese/Thai family in Bangkok, Wacharee Laubrayoon graduated with Bachelor Degree
in Marketing and Business Management from Mahidol University International Students Degree
Programme in 1992. She first joined Mitsui Marine Insurance – a reputable Japanese and global
insurance firm.

In 1994, Wacharee Laubrayoon joined Steven J. Leach, Jr.+Associates Limited Thailand Branch
and works her way up through the ranks to become the local Director and Shareholder of the
Company until present, as well as a group shareholder. She oversees Finance/Human Resources
and business administration.

Through her connection with the Thai Chamber of Commerce, Law Society, as well as being a
senior member of Thai Secretary Associations, Wacharee has gained wide range of knowledge
and experiences on taxes and labor laws.