Bangkok is about to get a lot more condos. If you've been renting here for a while, you already feel the shifts. One year a building near Thong Lo is impossible to get into, and the next year three new towers open on the same soi and suddenly landlords are texting you about "special deals." That cycle is about to hit hard in 2026, and if you're a renter, the numbers are actually working in your favor for the first time in a while.

Roughly 30,000 new condo units are expected to complete across Bangkok in 2026, according to data from leading Thai property consultancies. That's a significant jump from the roughly 22,000 units delivered in 2024. More supply hitting the market at once means more options, more competition among landlords, and potentially softer rents in several key corridors. Let's break down what this actually means if you're hunting for a place to live.

Where the New Supply Is Landing

Not every neighborhood is getting flooded equally. The biggest concentration of new completions is along the Sukhumvit corridor, particularly between Ekkamai and On Nut BTS stations. Developers have been stacking projects in this zone for years because the land was still relatively affordable compared to Asok or Phrom Phong, and young professionals love the area.

Think buildings like The Esse Sukhumvit 36 and new phases near BTS Phra Khanong. Along Rama 9 and the Orange Line MRT extension, another wave of completions is coming, with mid range projects targeting Thai professionals who want modern units without Sukhumvit pricing.

Then there's the Charoen Nakhon and Klongsan side of the river. Projects like Banyan Tree Residences Riverside and several mid tier towers near ICONSIAM are completing, adding hundreds of units to a riverside market that barely existed five years ago. If you've been priced out of Sathorn, this side of the Chao Phraya suddenly looks very interesting.

How This Affects Rent Prices Along Sukhumvit

Here's a real scenario. Right now a one bedroom condo near On Nut BTS, something around 30 square meters in a building like The Base Sukhumvit 50, rents for about 13,000 to 16,000 THB per month. A similar sized unit closer to Thong Lo or Ekkamai might run 18,000 to 25,000 THB depending on the building's age and amenities.

When five or six new buildings complete within a two station radius in 2026, landlords in older buildings suddenly have a problem. Their units are competing against brand new lobbies, fresh pools, and modern kitchens. The most common response? Lower the asking price or offer incentives like a free month or waived common fees.

We're already seeing early signs of this around Udomsuk and Bang Na BTS, where new completions in 2024 pushed rents on older stock down by 5 to 10 percent. Expect a similar pattern to ripple toward Ekkamai and Phra Khanong through 2026. For renters willing to live in a building that's three to five years old instead of brand new, the deals will be genuinely good.

The Rama 9 and Ratchada Opportunity

Rama 9 has been called "the new CBD" for years, and while that label is still a stretch, the infrastructure is catching up. The MRT connectivity at Phra Ram 9 and Phetchaburi stations keeps improving, and the Central Rama 9 area already has serious office and retail density.

A two bedroom unit near MRT Phra Ram 9 in a project like Life Asoke Rama 9 currently goes for about 22,000 to 28,000 THB. With multiple new buildings completing in the area through 2026, expect landlords to get more flexible on pricing, especially for longer lease terms of 12 months or more.

For families or couples who work in the Asok or Ratchadaphisek area, this neighborhood deserves serious attention. You get newer buildings, larger units, and rents that are 20 to 30 percent lower than equivalent Sukhumvit addresses. The trade off is a slightly less walkable street life, but grab bikes and the MRT make it manageable.

What Renters Should Actually Do With This Information

First, don't rush. If your lease is up in mid 2026, you're in a strong negotiating position. Landlords with units in buildings completed between 2019 and 2023 will be feeling the pressure from shiny new competition. Use that. Ask for a rent reduction, or request that they cover your internet or add furniture.

Second, expand your search radius by one or two BTS stops. The difference between Phrom Phong and Phra Khanong might be 8,000 THB a month for a nearly identical unit. In a high supply environment, the savings at slightly less "prime" stations become even more dramatic.

Third, look at the riverside. Charoen Nakhon and Klongsan are adding serious supply, and the Gold Line plus river ferries make commuting to Sathorn or Silom surprisingly quick. A two bedroom with river views that might cost 45,000 THB in a Sathorn tower could be 28,000 to 35,000 THB on the Thonburi side.

One Thing to Watch Out For

More supply doesn't automatically mean lower rents everywhere. Ultra prime locations like Soi Sukhumvit 11 near Nana BTS or the luxury end of Langsuan and Wireless Road operate by different rules. Limited land, established expat demand, and high end finishes keep those rents sticky. If you're looking at the 60,000 THB plus range, don't expect dramatic drops.

Also, some new completions will be investor heavy buildings where most units hit the rental market at once, creating a temporary glut. That's great for renters in the short term, but quality can vary wildly in these buildings. Always visit in person, check the lobby and common areas on a weeknight, and talk to existing residents if you can.

The bottom line is simple. Bangkok's 2026 condo supply wave is a genuine opportunity for renters who do their homework and stay patient. More buildings mean more choices, and more choices mean better deals. Whether you're a solo expat near On Nut or a family eyeing Rama 9, the market is shifting your way. Start browsing early, compare buildings carefully, and don't accept the first price you see. If you want to search available condos across Bangkok with actual pricing data and AI powered recommendations, check out superagent.co to find the right unit before the best deals get taken.