--- title: "Sigma Prep" description: "Located on Sukhumvit Rd in Thonglor, Sigma Prep operates coworking office space with a perfect 5-star rating, backed solidly by 19 individual customer…" url: https://bestofthailand.org/place/sigma-prep-phra-khanong locale: en --- # Sigma Prep ![Sigma Prep](https://bestofthailand.org/images/pool/cat-coworking-offices-1.webp) 5.0(19 reviews) Coworking & Offices · Phra Khanong & On Nut Located on Sukhumvit Rd in Thonglor, Sigma Prep operates coworking office space with a perfect 5-star rating, backed solidly by 19 individual customer reviews on record. #3 of 14 coworking & offices in Phra Khanong & On Nut+0.5 vs the Phra Khanong & On Nut average of 4.5 ## What reviewers say Kru Numfon and her colleagues are credited by students with significant test score improvements, particularly in SAT mathematics and IELTS composition. The center maintains strong professional teaching standards, clean facilities, well-structured curricula, and consistent communication with parents throughout students' enrollment periods. - patient instructors - proven test score gains - clean facility - structured curriculum Editorial summary by Best of Thailand, based on 5 Google Maps reviews as of August 2026. ## Reviews No reviews yet — be the first. ### Write a review Rating ## Contact & details **Address** 1038, 22 Sukhumvit Rd, Phra Khanong, Bangkok **Details last verified** September 2026 [Map showing the location of Sigma Prep](https://www.openstreetmap.org/export/embed.html?bbox=100.5839424,13.7136357,100.59394239999999,13.7196357&layer=mapnik&marker=13.7166357,100.5889424) · [Open in Google Maps](https://www.google.com/maps/search/?api=1&query=13.7166357,100.5889424) ## Getting there - [BTS Phra Khanong](https://bestofthailand.org/bangkok/near/bts-phra-khanong) (E8) · 300 m · 4 mins walk - [BTS Ekkamai](https://bestofthailand.org/bangkok/near/bts-ekkamai) (E7) · 520 m · 7 mins walk Straight-line distance at 80 metres a minute — the real walk is longer wherever a canal or a superblock gets in the way. [Is this your business? Claim it](https://bestofthailand.org/for-businesses) ## Similar places nearby **[We Make Studio](https://bestofthailand.org/place/we-make-studio-phra-khanong)** — ![We Make Studio](https://bestofthailand.org/images/pool/cat-coworking-offices-1.webp) — 5.0 — Coworking & Offices · Phra Khanong & On Nut — Creative studio workspace on Soi Sukhumvit 48 in Phra Khanong offers shared studios, collaboration areas, and facilities for makers and small creative practitioners. **[Santi Social Space](https://bestofthailand.org/place/santi-social-space-phra-khanong)** — ![Santi Social Space](https://bestofthailand.org/images/pool/cat-coworking-offices-5.webp) — 5.0 — Coworking & Offices · Phra Khanong & On Nut — Closed today฿฿Step-freeKids — Flexible coworking space from ฿200–400 per month on Sukhumvit 66/1 in Bang Na provides shared desks, meeting rooms, and workspace for freelancers and small teams. **[Stash BKK On Nut Cannabis Shop & Kratom](https://bestofthailand.org/place/stash-bkk-on-nut-cannabis-shop-kratom-phra-khanong)** — ![Stash BKK On Nut Cannabis Shop & Kratom](https://bestofthailand.org/images/pool/cat-coworking-offices-3.webp) — 5.0 — Coworking & Offices · Phra Khanong & On Nut — Open 24huntil 00:00Busy now — Stash BKK On Nut in Phra Khanong at The Beacon Place on Sukhumvit 50 operates as a cannabis and kratom retailer serving customers locally. **[Green Lab by The Nest Sukhumvit](https://bestofthailand.org/place/green-lab-by-the-nest-sukhumvit-phra-khanong)** — ![Green Lab by The Nest Sukhumvit](https://bestofthailand.org/images/pool/cat-coworking-offices-4.webp) — 5.0 — Coworking & Offices · Phra Khanong & On Nut — Open nowuntil 00:00Free Wi-Fi — Located on Sukhumvit Rd in Phra Khanong, Green Lab by The Nest is a coworking space for freelancers, startups, and small businesses. ## Within 600 metres Measured from this listing's coordinates, not from its district — same category first, then whatever else is on the doorstep. **[the Hive Prakanong](https://bestofthailand.org/place/the-hive-prakanong-thonglor)** — ![the Hive Prakanong](https://bestofthailand.org/images/pool/cat-coworking-offices-3.webp) — 4.7 — Coworking & Offices · Thonglor — Closed now — The Hive operates as a co-working and office space provider on Sukhumvit Soi 69 in Phra Khanong & On Nut's Prakanong Nuea neighbourhood. 340 m · 5 mins walk **[MAHA VERTEX](https://bestofthailand.org/place/maha-vertex-thonglor)** — ![MAHA VERTEX](https://bestofthailand.org/images/pool/cat-coworking-offices-7.webp) — Coworking & Offices · Thonglor — Closed nowStep-free — Providing flexible coworking and office space in Phra Khanong & On Nut, MAHA VERTEX operates from Summer Point Building on Sukhumvit 69. 370 m · 5 mins walk **[The Urban Office Phra Khanong](https://bestofthailand.org/place/the-urban-office-phra-khanong-thonglor)** — ![The Urban Office Phra Khanong](https://bestofthailand.org/images/pool/cat-coworking-offices-3.webp) — 4.9 — Coworking & Offices · Thonglor — Closed nowLGBTQ+ friendly — The Urban Office Phra Khanong at Summer Point Building on Sukhumvit 69 Alley provides professional coworking space with collaborative facilities, rated 4.9 stars by 143 members. 380 m · 5 mins walk **[Dynamic APAC Co., Ltd](https://bestofthailand.org/place/dynamic-apac-co-ltd-phra-khanong)** — ![Dynamic APAC Co., Ltd](https://bestofthailand.org/images/pool/cat-coworking-offices-2.webp) — Coworking & Offices · Phra Khanong & On Nut — Closed now — Dynamic APAC Co., Ltd. operates professional coworking and office space solutions in Phra Khanong & On Nut district along Sukhumvit Road for businesses. 390 m · 5 mins walk