Off-Plan vs Ready-to-Move-In: Which Thailand Condo Should You Buy in 2026?

Category: buyer-guide
Read time: 11 minutes
Target keywords: off-plan condo Thailand, ready-to-move-in condo, buy new build condo Bangkok, developer vs resale Thailand, condo payment plan Thailand

One of the first decisions any property buyer in Thailand faces is whether to buy off-plan (pre-construction) or a ready-to-move-in (completed) condo. Both approaches have passionate advocates — and both have hidden pitfalls that can cost first-time buyers dearly.

This guide compares the two paths across every dimension that matters: price, risk, timeline, financing, and resale value.

The Big Picture

Off-Plan: The Case for Buying Early

Off-plan sales are the lifeblood of Bangkok's condo market. Developers use buyer deposits to fund construction, and buyers get the best prices.

The Price Advantage

The discount for buying off-plan varies by developer and project phase:

• Launch phase (first 30% of units sold): 25–30% below expected completion value
• Mid-construction (50% built): 15–20% below completion value
• Pre-completion (90% built): 5–10% below completion value

These discounts are not theoretical — they represent real equity gains if the project completes as promised. A buyer who purchases a 5M THB unit at launch at 25% below market (effectively 3.75M THB) could see 1.25M THB in paper gains by the time the building is finished.

The Payment Advantage (Cash Flow)

Off-plan payment schedules are structured as instalments — typically 10–30 instalments spread over 24–48 months. Crucially, these carry 0% interest. This means:

• You can buy a condo with as little as 100,000 THB down
• You pay the balance gradually as construction progresses
• You don't need a mortgage until the final transfer (2–4 years later)

This is particularly advantageous for expats who need time to arrange Thai mortgage approval or fund transfers.

The Selection Advantage

Buying off-plan means first pick of every unit. You can choose:

• The best floor (high floors command 15–25% premium)
• Corner units with dual views
• Units facing away from neighbouring buildings
• Your preferred parking spot and storage unit

By the time a building is completed, the prime units have been sold for 2–4 years.

The Risk Factors

Off-plan carries real risks that buyers must understand:

Developer insolvency: If the developer goes bankrupt mid-construction, buyers are unsecured creditors. Your deposits may be lost. Mitigation: Buy from publicly-listed developers (AP, Sansiri, Pruksa, Land & Houses, Origin) with proven track records. Check their debt-to-equity ratio and completed project count.

Quality compromise: The show unit is not what you'll get. Developers often cut corners on materials, finishes, and common-area amenities. Mitigation: Visit completed projects by the same developer. Inspect the quality of their previous work. Look at hallway finishes, lift quality, and pool finishing — not just the show unit.

Delays: Thai construction delays are common — 6–12 month delays are normal, and 18+ month delays happen. Mitigation: Build a buffer into your plans. Never sell your current home before the new one is ready.

Market downturn: If property prices fall during construction, your off-plan unit may be worth less than you paid. This is rare in Bangkok's long-term up-trend but happened during COVID-19 (2020–2021). Mitigation: Focus on prime locations (central Sukhumvit, CBD Sathon) where demand is more resilient.

Ready-to-Move-In: The Case for Buying Now

The Certainty Advantage

When you buy a completed condo, what you see is what you get. You can:

• Walk the actual unit (not a show unit)
• Measure room dimensions
• Check natural light at different times of day
• Inspect for water damage, mould, and construction defects
• Talk to existing residents about building management quality
• Check the juristic person's maintenance fund and financial health

This certainty is valuable — especially for first-time buyers who may not know what to look for in a new build.

The Income Advantage

A ready condo can generate rental income immediately. On a 5M THB condo yielding 5% gross annually, that's 250,000 THB/year in rent — or approximately 700 THB/day from day one.

The Financing Advantage

Banks will lend against a completed condo more readily than off-plan. The loan-to-value ratio (LTV) is typically 70–80% for completed properties versus 60–70% for off-plan. Some banks won't lend on off-plan at all.

The Negotiation Advantage

Completed projects have something off-plan projects don't: urgency. Developers want to close out inventory. You can typically negotiate:

• 5–15% discount on the listed price (especially for remaining lower-floor units)
• Free furniture packages (worth 100K–300K THB)
• Waived transfer fees (normally 2% of the price)
• Free common-area maintenance fees for 1–2 years

Which Strategy Wins?

Buy Off-Plan If You:

• Have time (2–4 years before you need to move in)
• Want the best unit in the building (high floor, best view)
• Prefer a gradual payment schedule
• Are willing to accept some uncertainty
• Want maximum capital appreciation potential

Buy Ready-to-Move-In If You:

• Need to move in within 6 months
• Want certainty about quality and space
• Plan to generate immediate rental income
• Prefer negotiating a package deal
• Want easier mortgage approval

The Hybrid Strategy

Many experienced buyers use a hybrid: buy off-plan in a prime location for capital growth, and buy ready-to-move-in for immediate rental income. The off-plan investment funds the deposit on the ready condo through a bridging loan or progressive equity release.

Our Verdict

For most buyers in 2026, we recommend a quality off-plan purchase from a major developer in a proven location. The 20–30% discount, gradual payment schedule, and first pick of units create a compelling value proposition — provided you mitigate the risks by choosing the right developer.

That said, if you find a completed unit in a building less than 5 years old with a motivated seller (developer closing out inventory or an individual needing to sell), the ready-to-move-in path can offer comparable value with zero construction risk.

Calculate the total costs of both approaches including transfer fees, stamp duty, and taxes with our Stamp Duty & Property Fees Calculator.