So Origin Sukhumvit 105

The four residential buildings sit behind the clubhouse, with the main pool and garden placed between Buildings B and C. The detailed master-plan review allocates 229 units each to A, C and D and 226 units to B. Residential floors run from levels 2 to 8, while ground levels include parking, lobbies, lift halls and mail areas. This configuration matters because 913 units in an eight-storey project can feel very different depending on the block and orientation. A and D are largely organised around 27 sqm and 34.5 sqm layouts plus a small number of two-bedroom corner units; B and C carry the two 24.5 sqm formats as well as larger one-beds and two-beds. Internal-facing homes in B and C can look toward the pool and landscaped court, while outward-facing apartments take in the existing low-rise fabric of Lasalle. The project is therefore best selected from a block-and-stack plan, not from a generic unit-type brochure.

Construction is at an early, verifiable stage. A 2025 review still showed the environmental impact assessment as pending. Origin's live page now says the EIA has been approved and, in its August 2026 progress update, shows site clearing and preparation for foundation work. Structural, architectural and M&E progress are still displayed at 0%. The more detailed project timetable lists a July 2026 construction start and expected completion in Q2 2028. That is useful context for both end users and investors: this is not a near-handover purchase, there is no current rental income from the unit, and the buyer is accepting a construction-period timeline. Q2 2028 should be treated as the developer's target and checked against the sale-and-purchase agreement, not treated as a guaranteed move-in date simply because it appears in sales material.

The unit mix is unusually easy to understand because the five layouts solve different day-to-day problems rather than merely adding a few square metres. The 24.5 sqm Smart Kitchen puts the kitchen by the balcony and allows it to be separated, useful for buyers who cook and want ventilation. The 24.5 sqm Smart Closet shifts the closed kitchen toward the entrance and gives more emphasis to dressing and storage. The 27 sqm SO Signature has a more clearly enclosed bedroom and an en-suite-style relationship between bedroom and bathroom. At 34.5 sqm, the SO Suite has enough living-room width for a work or flexible zone as well as a closed kitchen. The 53 sqm SO Exclusive is the only true two-bedroom format in the published mix and includes two bathrooms. Launch-period specifications described the apartments as fully fitted with built-in storage, kitchen cabinetry, hob and hood, air-conditioning and a digital door lock; the current contractual specification should still be checked because equivalent-brand substitutions were explicitly contemplated.

Amenities are distributed across the site rather than concentrated in one lobby. The separate clubhouse contains reception and work areas, private working and meeting rooms, creative space, a studio, fitness and weight training, a balancing studio for yoga or Pilates, a golf simulator and co-living/kitchen space. Its upper outdoor level adds dining, viewing and relaxed social areas. Between the residential blocks is a swimming pool with jacuzzi, pool deck and landscaped garden. Building B adds a quieter wellness layer with a healing zone, private spa room and massage chairs. This is a broad program for an eight-storey development and should appeal to people who genuinely use shared spaces. It also means the ongoing quality of management will matter: a long facility list creates value only if the spaces are maintained, access rules are sensible and the common budget is sufficient after handover.

Pet provision is one of the clearest differentiators. Origin's current page is explicitly built around living with pets and lists a Cat Club, pet playground, paw-wash area, waste station, pet deck, lounge, club and private pet area on the roof of Building C. That is more specific than a broker simply tagging a listing as pet-friendly. Still, the published amenity list does not replace the eventual juristic-person rules. Buyers who need pet access should ask for the permitted species, weight or size limits, number of animals per unit, lift and circulation rules, cleaning obligations and any special charges before reservation. A pet-oriented common area is valuable only if the rules match the animal you actually plan to keep.

Price should be read in two layers. Origin's current project-selection page continues to advertise entry from THB 2.39M as of 29 August 2026. Live secondary and agency pages checked around the same time show the cheapest visible stock more often around THB 2.81M to THB 3.01M, while individual two-bedroom offers can be around THB 6.45M to THB 6.9M. Those numbers describe different units and sales channels, so they should not be averaged into a made-up project price. The useful buyer workflow is to request an actual availability sheet and compare the same layout, building, floor, orientation, view, ownership quota and payment terms. A headline 'from' price is a lead-generation anchor; the reservation decision belongs to a specific unit.

Foreign buyers have a specific to the project reason to investigate this scheme rather than relying only on Thailand-wide rules. Origin announced in 2025 that it had appointed Thaiway Property as master agent for several Asian markets and reported roughly THB 1.2 billion of foreign-quota sales for So Origin Sukhumvit 105. That shows the project was actively structured and marketed for foreign purchasers, but it does not tell us how much foreign freehold remains in August 2026. Under Thailand's condominium rules, foreigners can hold freehold only while total foreign ownership remains within 49% of the aggregate unit area of the registered condominium. Before paying a reservation, an overseas buyer should therefore obtain confirmation that the exact unit is eligible for foreign freehold, understand the required inward remittance documentation and review the transfer clauses. If a leasehold alternative is offered, its term and renewal mechanics need to be evaluated as a separate legal position rather than assumed to be equivalent to freehold.

The last decision is not whether the project has enough facilities; it is whether the specific apartment fits the way you will use Bang Na. A commuter may prioritise the shortest walk to Bearing and a quiet outward-facing stack. A remote worker may value the clubhouse but prefer the 34.5 sqm plan so the apartment itself still works when common areas are busy. A small family may need the 53 sqm two-bedroom and should check school-run traffic as carefully as rail access. A pet owner should focus on Building C circulation and the eventual house rules. A car-dependent household should inspect the parking plan and management policy rather than assume one space per unit: the project publishes only a finite shared parking supply. Because construction is still at foundation-preparation stage, the best protection is a precise reservation sheet and contract that identify unit number, sale area, ownership form, specification, payment milestones and handover obligations in writing.