137 Pillars HouseSustainability & Social Impact Report2025
Agenda1. Introduction [page 3]2. Meet the Green Team [page 4]3. Sustainability & Social Impact Pillars [page 5]4. Timeline [page 6]5. Highlights and Honors [pages 7-8]6. Responsible Management [page 9-10]7. Social Responsibility [pages 11-28]8. Cultural Heritage [pages 29-32] 9. Environmental Stewardship [pages 33-45] 10. Summary [pages 46]2
IntroductionThe owners, management and staff of 137 Pillars House believe that true hospitality is more than comfort and service – it is a commitment to people, place and purpose.We believe that genuine hospitality means:• Welcoming guests with sincerity and care, creating moments of belonging.• Delivering service rooted in professionalism, empathy and cultural awareness,• Showcasing local traditions, architecture and flavours in ways that honour and preserve heritage.• Offering experiences that nurture well-being, while protecting the environment. In doing so, we hold ourselves accountable to a higher standard of stewardship:“We have a duty of care to our community and the wider world: a duty to assume the role of custodians of our local culture, architecture, waterways, forests, animals and environment and ensure that the generations that follow inherit a world that we would recognize and want to live in.”3
Meet The Green TeamAnne ArrowsmithGeneral ManagerLakana ( Mam)Executive ChefPrasong (Ter)IT ManagerChanasorn (James)Food and Beverage ManagerTheerachon (Tum)Chief EngineerChanatchada (Aom)Human Resource ManagerWarisarang (Pat)Director of RoomsSaipin (Weaw)Reservation& E-commerce Manager4Jirapiya (Pingpong)Financial ControllerTanyawan (Tan)Director of Sales
Sustainability and Social Impact Pillars 5• Safeguard and support our heritage• Craft cultural guest & staff experiences • Promote traditional cuisine and crafts• Community involvement with Wat Ket and our Wat Ket Temple.• Focus on local hires• Inclusive hiring • Responsible sourcing• Community care• Charitable involvement• Adherence to good governance and all applicable labor, human rights, environmental, health and safety laws.• Continuing commitment to Green Globe Certification requirements.• External and internal communication of our goals and results• Continuing learning and education • Improve energy & water efficiency• Enhance waste management• Embrace Reduce, Reuse, Recycle• Protect biodiversity and cultivate regenerative ecosystems.ResponsibleManagementSocial ResponsibilityCultural HeritageEnvironmentalStewardship
Timeline6137 Pillars House submits the application for Green Globe CertificationMar 2025Nov 2025Collaboration between all department stakeholders on the Implementation PlanApr – Jul 2025Jan 2026Complete Gap Analysis and final preparations for the Audit. Aug - Sep 2025Publish Annual Report and Set 2026 Objectives and Goals Implement audit report improvements & requirements
Highlights and Honors7• TripAdvisor 4.8 #2 Boutique Hotel Chiang Mai• Guest Satisfaction Survey 9.5 - Hotel Facilities 9.5 - Service 9.8 - Sustainability 9.5 - Recommend to others 9.4• Destin Asian - Readers Choice Awards- Voted Best Resort in Thailand (2024) - Voted #5 Best Boutique Resort, Asia(2024)• Tatler Asia Inaugural awards - Best 100 Hotels in Asia in 2024- Tatler Best 100 Hotels Asia-Pacific in 2025- Tatler Best Asia-Pacific: Best Boutique Hotel in 2025 • Michelin Key- One Michelin Key • Trip.Best Asia- Top 20 for Instagrammable hotel in Chiang Mai 2025• Employee Recognition- Anne (General Manager)- Pat (Director of Rooms)- Big (Asst. Front Office Manager)- Toto (Head Butler)- Eak (FB Supervisor)- Aumaim (Guest Service Agent)- Up (FB Supervisor)- Bow (Waitress)- May (Waitress)- Ice (Waiter)- Torch (Waiter)- Nu (Bartender)Awards Customer Review (2025 YTD) 2025 SLH Mystery Inspection
Highlights and Honors Continued8• Replaced all 30 Suite AC units• Replaced 80% BOH AC units• Replace 80% Public Area AC units• Replace dripping system on greenwallto misting system.• Well water is used for garden• Electricity sensor systems are installed in the back-of-house areas.• Energy efficiency is a primary consideration when purchasing electrical appliances.• Flood Mitigation Works:➢ Reinforced hotel perimeter wall foundations.➢ Protected Generator, MDB, IT, cold water storage, engineering office with walls and aluminium panels.➢ Installed flood gates across 8 vulnerable areas.➢ Positioned flood gates across 2 drains to prevent water flow back.➢ Enlarged all manholes for better• Established separation and collection bins for daily waste weighing.• Redesigned Dry and Wet Garbage spaces for improved efficiency and collection.• Partnered with local farmer to donate food waste.• Sourced company to take used oilEnergy Efficiency Improvements Safety Improvements Waste Management Improvements
9Responsible ManagementPromotion From Within2024 vs 2025
10Under Social Responsibility & Staff Wellbeing : Annual health checkups support employee wellbeing, which is a key aspect of the social pillar of sustainability. Green Globe encourages businesses to support the physical and mental health of their teams as part of fair labor practices and social responsibility.Ensuring health and safety for staff and guests is a core part of social sustainability. Regular fire evacuation training demonstrates a commitment to risk management, safety preparedness, and responsible operations, all of which are recognized under Green Globe’s Occupational Health & Safety criteria.Staff-Welfare
11Social Responsibility69 Total Staff 11 Managers 40 M 29 F 4 M 7 F : 68 Thai 1 USA 92% Local 6% Other Provinces 18 Supervisors 9 M 9 F3 hours per person per month
12Guest laundry is delivered in wicker baskets avoiding the unnecessary use of plastic.137 Pillars House engages with guests in our sustainability endeavors offering alternatives to daily linen and towel changes.Principled Procurement
13We provide eco-friendly amenities with both our guests and the environment, in mind. From biodegradable packaging to thoughtfully selected essentials, we ensure comfort without compromise.Drinking water is offered in refillable glass bottles, eliminating single-use plastics.For more comfort and protection, we also provide an all-natural, organic mosquito repellent, keeping the guests safe while being gentle on nature. By choosing greener alternatives, we continue our journey towards a more responsible and sustainable hospitality experience.Principled Procurement
14In support of our sustainability goals, we provide bathroom amenities in refillable plastic bottles. This approach helps reduce single-use plastic while maintaining the highest standards of hygiene and safety for our guests.Principled Procurement
15Saro Tea is featured in our in-room amenities, celebrating Thai heritage and sustainability in every cup. Crafted from the purest royal lotus and herbs, and sourced exclusively from organic farms, Saro ensures only the finest ingredients are used—pausing production if standards aren’t met. This commitment to quality earned the prestigious ITQI Superior Taste Award. With flavors ranging from classic lotus to herbal blends like lemongrass and mint, each sip is a tribute to nature, crafted with pride and mindful care.Principled Procurement
16No plastic key card Local ceramic crockery used for in room amenitiesStainless steel ice containerPrincipled Procurement Reusable bottle of water for guest purchase
17Washable cotton bathrobeWashable cotton slipper and local rattan sandalLocal rattan bag for room amenitiesPencils over pens, our small step toward sustainability.Principled Procurement
18Our Sustainable Spa ProductsAt Nitra Spa, we carefully select products that care for both you and the planet.Alodia Co., Ltd. – Locally produced and certified with Green Industry Level 2 by Thailand’s Ministry of Industry, reflecting eco-friendly production, workplace safety, and social responsibility.Address: 779/209 Pracharatbumpen Rd., Samsennok, Huai kwang, Bangkok 10310, ThailandPrincipled Procurement
19Our cooler at fitness center now includes eco-friendly paper cups, crafted from renewable, responsibly sourced wood. Compared to plastic, paper degrades more quickly and emits fewer microplastics, helping safeguard both our environment and your health. Wherever available, we use recyclable or compostable paper cups—designed to fit right into the circular economy. By choosing paper over plastic, we're reducing waste, supporting sustainable forestry, and prioritizing ecoconscious hospitality.We serve local herbal tea from Doi Kham (Royal Project) as a refreshing welcome drink.Principled Procurement
As an eco-friendly hotel, we offer tricycle tours to promote lowimpact transportation and support the local community. This initiative aligns with our sustainability goals by reducing carbon emissions and providing income opportunities for local drivers — contributing to both environmental and social sustainability.https://137pillarshotels.com/en/chiangmai/attractions/samlor-tour20Reusable cotton bag for guest’s tour excursion which was designed and sewn by our staff. Principled Procurement
21Local suppliers are provided reusable bags for vegetable and fruit deliveries to avoid using single plastic.To support sustainability, we avoid using plastic for takeaway containers and instead use paper containers, including straws and wooden cutleryPrincipled Procurement
22Crafted from natural rattan, our To Go breakfast box containers are designed to be reused, reflecting our commitment to sustainability and reducing waste.To maintain high hygiene standards and promote sustainability, we use stainless steel covers in place of plastic wrap for room service deliveries.Principled Procurement
23Greener Meetings & Events Sustainability isn’t a fad, it’s a commitment. We believe every event is an opportunity to make a positive impact, and we’ve designed our meeting and event services with the planet in mind. Be it a boardroom meeting, conference, or private celebration, we offer solutions that combine environmental responsibility with exceptional service..What Makes Us a Sustainable Choice?➢ Eco-Friendly Catering : Menus crafted from locally sourced, seasonal ingredients. ➢ Sustainable Materials : Wood pencils instead of plastic pens. ➢ Energy Efficiency : LED lighting, energy-saving AV systems, and smart climate control.➢ Green Décor & Local Touches : Natural elements, and locally made items with sustainability and style in mind.➢ Linen-free table settings: Promoted to reduce water usage.Principled Procurement
24Locally grown, seasonal fruits and vegetables featured in our seasonal special menus.Principled Procurement
25Distribute and share potting soil from thehotels compost with our neighbors in theWat Ket community. Social Activities
26137 Pillars House collaborated with theWat Ket community and officers from theKawila District Office to conduct acommunity cleaning activity on 17November 2025.Social Activities
Social Activities 27In 2020, 137 Pillars House started its support of Elephant Nature Park, a rescue and rehabilitation sanctuary located in Mae Tan. Additionally, each August, in recognition of World Elephant Day, 137 Pillars Hotels & Resorts donates USD 1 from every suite stay at both our Chiang Mai and Bangkok properties.YTD 137 Pillars House had donated THB XXX and donated a grand total of THB YYY since the beginning.
Social Activities 28137 Pillars House was honored to organize and host an unforgettable fashion show, bringing together three incredible local designers: Yosita, Pitcha Clothier, and Le Leezu Tribal Design who showcased their unique and sensational designs.Surrounded by the timeless beauty of a colonial teak house, the evening wasn’t just a celebration of fashion, it was a way to give back and support the Save Elephant Foundation.,With the incredible generosity of our guests, we raised over THB 430,000 for Elephant Nature Parks foundation.
Cultural Heritage 29At our hotel, sustainability goes beyond the environment — it includes social responsibility and cultural preservation. One of our key initiatives is the Hotel Museum Experience, designed to connect guests, visitors, and the local community to our history and that of the city through vintage photography and storytelling.
30The hotel’s boutique, in the old house, showcases an exquisite range of high-quality, locally and regionally produced decorative and fashion items. An example is hand-woven textiles sourced from Sop Moei Arts, a non-profit organization dedicated to supporting weavers from the Karen tribe in Mae Hong Son province. For the past 40 years they have provided a sustainable source of income to weavers and helped preserve traditional craft skills that are rapidly disappearing. Traditional Crafts
31Traditional Crafts
Safeguarding Nature 32Our committed to local culture and community extends beyond our support for neighborhood entities such as Dragon and Phoenix Studio. Wat Ketkaram Temple, Wat Ketkaram Municipal School, and the Wat Ket community to include protection and preservation of a century old Rain Tree threatened with removal due to insufficient funds for its care.The owners and management of 137 Pillars House committed to undertake the necessary annual check and trimming of the tree.In addition, we organized a community gathering and a blessing ceremony officiated by the head monk at Wat Ket Temple to ensure its presence and health for many generations to come.
33Employee awareness to favor environmentally friendly bags and reusable containers and bottles Environmental Endeavors
Sustainable Partnership34We collaborate with UCO Bank to support the efficient and eco-friendly use of resources, reinforcing our commitment to sustainability.
Sustainable Partnership35
36We carefully sort and recycle waste to reduce our environmental footprint. Items that are only available in plastic packaging—such as milk, yoghurt and condiments—are responsibly separated for recycling, along with aluminum, paper, and glass.Environmental-Reuse Recycle
37Water comes in reusable glass bottles, which are collected after use, cleaned, and returned to our suppliers, eliminating the need for disposable plastic or aluminum containers.Environmental-Return
Presentation title 38Our suppliers deliver fish and seafood in reusable containers, which we collect and return after use. To reduce single-use plastic waste, our ice cream containers are part of a return program where used containers are collected and returned to the supplier for cleaning and reuse. Environmental-Return
39We return used fire extinguishers and gas tanks to certified suppliers for refilling, servicing, or recycling, reducing waste and supporting safe, sustainable operations.To reduce single-use plastic, we work with laundry suppliers who support reusable packaging. Our rooms linen partner collects and returns linen using cotton bags, while our F&B / guest linen partner uses plastic bags which are returned and re-used. Return Initiatives
Waste Management Record40As part of our sustainability commitment, we record and track all waste management activities to encourage responsible disposal and continuous improvement.Recycling waste17.64% Hazardous Waste0.34%Food Farm Feed16.94%Food Waste39.24%General Waste8.85%Cooking Oil16.99%• Diverted Waste 51.57%• Waste to Landfill 48.43%
41Water usage RecordMonthUsage/Hc (CBM)2025 2024JAN 0.30 0.40FEB 0.37 0.54MAR 0.54 0.79APR 0.56 0.83MAY 0.39 0.56JUN 0.38 0.46JUL 0.37 0.42AUG 0.35 0.36SEP 0.40 0.57OCT 0.30 0.99NOV 0.28 0.36DEC 0.33 0.39AVR 0.37 0.54OCC% 44% 45%JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC2025 0.30 0.37 0.54 0.56 0.39 0.38 0.37 0.35 0.40 0.30 0.28 0.332024 0.40 0.54 0.79 0.83 0.56 0.46 0.42 0.36 0.57 0.99 0.36 0.390.000.200.400.600.801.001.20Water usage per head count Month2025 2024Occ% HC Occ% HCJan 78% 3851 73% 3800Feb 73% 3146 74% 3227Mar 42% 2421 51% 2616Apr 34% 2182 42% 2414May 26% 2084 26% 2220Jun 27% 2191 29% 2339Jul 22% 2108 47% 2726Aug 29% 2185 40% 2739Sep 26% 2096 23% 2206Oct 39% 2474 5% 1583Nov 65% 2146 64% 3277Dec 63% 3311 70% 3762
42Diesel for generator usage RecordMonth2025 2024Occ% HC Occ% HCJan 78% 3851 73% 3800Feb 73% 3146 74% 3227Mar 42% 2421 51% 2616Apr 34% 2182 42% 2414May 26% 2084 26% 2220Jun 27% 2191 29% 2339Jul 22% 2108 47% 2726Aug 29% 2185 40% 2739Sep 26% 2096 23% 2206Oct 39% 2474 5% 1583Nov 65% 2146 64% 3277Dec 63% 3311 70% 3762JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC2025 Usage/HC 0.0039 0.0064 0.0062 0.0069 0.0144 0.0068 0.0071 0.0137 0.0119 0.0061 0.0048 0.00452024 Usage/HC 0.0039 0.0046 0.0076 0.0062 0.0068 0.0064 0.0092 0.0110 0.0068 0.0411 0.0046 0.0040 - 0.0050 0.0100 0.0150 0.0200 0.0250 0.0300 0.0350 0.0400 0.0450LirteDiesel for generator usage per head countUsage/HC2025 2024JAN 0.0039 0.0039 FEB 0.0064 0.0046 MAR 0.0062 0.0076 APR 0.0069 0.0062 MAY 0.0144 0.0068 JUN 0.0068 0.0064 JUL 0.0071 0.0092 AUG 0.0137 0.0110 SEP 0.0119 0.0068 OCT 0.0061 0.0411 NOV 0.0048 0.0046 DEC 0.0045 0.0040 AVR 0.0077 0.0093 OCC% 44% 45%
43Electricity usage RecordMonth2025 2024Occ% HC Occ% HCJan 78% 3851 73% 3800Feb 73% 3146 74% 3227Mar 42% 2421 51% 2616Apr 34% 2182 42% 2414May 26% 2084 26% 2220Jun 27% 2191 29% 2339Jul 22% 2108 47% 2726Aug 29% 2185 40% 2739Sep 26% 2096 23% 2206Oct 39% 2474 5% 1583Nov 65% 2146 64% 3277Dec 63% 3311 70% 3762JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC2025 28.77 32.73 41.93 42.29 40.57 39.19 38.11 40.03 37.87 34.86 28.21 29.972024 25.79 31.07 37.80 41.82 40.47 37.24 36.21 32.64 33.68 32.04 29.31 28.95 - 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00kWhElectricity usage per head count MonthUsage/HC (kWh)2025 2024JAN 28.77 25.79FEB 32.73 31.07MAR 41.93 37.80APR 42.29 41.82MAY 40.57 40.47JUN 39.19 37.24JUL 38.11 36.21AUG 40.03 32.64SEP 37.87 33.68OCT 34.86 32.04NOV 28.21 29.31DEC 29.97 28.95YTD-AVR 35.24 33.77OCC% 44% 45%
Presentation title 44Fuel usage RecordUsage/HC (L)2025 2024JAN 0.16 0.16FEB 0.16 0.15MAR 0.09 0.16APR 0.15 0.18MAY 0.09 0.19JUN 0.12 0.18JUL 0.21 0.19AUG 0.14 0.16SEP 0.07 0.16OCT 0.17 0.17NOV 0.16 0.16DEC 0.15 0.18AVR 0.14 0.17OCC% 44% 45%JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC2025 Usage/HC 0.16 0.16 0.09 0.15 0.09 0.12 0.21 0.14 0.07 0.17 0.16 0.152024 Usage/HC 0.16 0.15 0.16 0.18 0.19 0.18 0.19 0.16 0.16 0.17 0.16 0.180.000.050.100.150.200.25LitreFuel usage per head count Month2025 2024Occ% HC Occ% HCJan 78% 3851 73% 3800Feb 73% 3146 74% 3227Mar 42% 2421 51% 2616Apr 34% 2182 42% 2414May 26% 2084 26% 2220Jun 27% 2191 29% 2339Jul 22% 2108 47% 2726Aug 29% 2185 40% 2739Sep 26% 2096 23% 2206Oct 39% 2474 5% 1583Nov 65% 2146 64% 3277Dec 63% 3311 70% 3762
Presentation title 45LPG usage RecordMonth2025 2024Occ% HC Occ% HCJan 78% 3851 73% 3800Feb 73% 3146 74% 3227Mar 42% 2421 51% 2616Apr 34% 2182 42% 2414May 26% 2084 26% 2220Jun 27% 2191 29% 2339Jul 22% 2108 47% 2726Aug 29% 2185 40% 2739Sep 26% 2096 23% 2206Oct 39% 2474 5% 1583Nov 65% 2146 64% 3277Dec 63% 3311 70% 3762JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC2025 Usage/HC(kg) 0.02 0.02 0.04 0.04 0.03 0.02 0.05 0.02 0.02 0.04 0.02 0.032024 Usage/HC(kg) 0.03 0.03 0.02 0.04 0.02 0.02 0.02 0.05 0.02 0.03 0.03 0.030.000.010.020.030.040.050.06KgLPG usage per head countUsage/HC(kg)2025 2024JAN 0.02 0.03FEB 0.02 0.03MAR 0.04 0.02APR 0.04 0.04MAY 0.03 0.02JUN 0.02 0.02JUL 0.05 0.02AUG 0.02 0.05SEP 0.02 0.02OCT 0.04 0.03NOV 0.02 0.03DEC 0.03 0.03AVR 0.03 0.03Occ% 44% 45%
SummaryThe Annual Sustainability and Social Impact Report is designed as both arecord of progress and a practical tool for continuous advancement. Itenables relevant personnel to regularly review performance against definedgoals, ensuring transparency and accountability while highlightingopportunities for improvement. Beyond internal use, it provides a foundation for clearer, more consistentcommunication with guests, clients and suppliers, strengtheningcollaboration and fostering shared responsibility in achieving oursustainability and social impact objectives46