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Data last updated 28 Sept 2026, 18:47.

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DDproperty

Royal Castle SukhumvitAll units in this condo →

Watthana, Khlongtoei Nua · Google Maps
฿16,500,000฿103,125 / m²Fair price14+ days listed
3 beds3 baths
฿16,500,000
฿103,125 / m²
View on DDproperty
OverviewPriceCosts & returnsLocationBuildingSimilar

Price comparisonEstimated from other current listings, not a valuation — just a signal.Typical range (25th–75th percentile) of comparable listings, per m²

Fair price

3% above the median price/m² of 60 comparable listings in this condo.

This listing
฿16,500,000
160 m² · ฿103,125/m²
At the median for 160 m²
฿16,026,268
฿473,732 more than the median
Typical range for this size
฿15,437,470 – ฿17,273,810
Comparables' median asking price: ฿17,000,000

Rental estimate & yieldGross yield = estimated rent × 12 ÷ asking price, before common fees, taxes, vacancy and agent fees. Asking rents, not signed contracts.

Based on 136 rentals in this condo: median ฿390/m² per month × 160 m².

Estimated rent
฿62,459/mo
฿55,000 – ฿66,382/mo
Gross yield
4.5%
4.0% – 4.8%
Median rent of comparables
฿60,000/mo
136 rentals, any size
Rentals of similar size
  • ฿68,000/mo·160 m²·3 beds
More details

Address

Subdistrict
Khlongtoei Nua
Address
30 Soi Sukhumvit 39, Khlongtoei Nua, Watthana, Bangkok
Nearest transit
580 m (7 min) from E5 Phrom Phong BTS
Coordinates
13.73433, 100.57183

Listing history

Listing ID
DDproperty #500472133
Posted at
14 Sept 2026
First seen
26 Sept 2026, 20:24
Last seen
26 Sept 2026, 20:24
Raw JSON
160 m²
Condo
฿16,500,000
Fair price
฿103,125 / m²
DDpropertyFor sale
View on DDproperty
Listed by
Sutapat Pariwong✓
Agent pageContact on DDproperty ↗
Listed by
Sutapat Pariwong✓
Agent pageContact on DDproperty ↗
This listing ฿103,125Median ฿100,164฿96,484 – ฿107,961
Similarly priced nearby
  • ฿16,500,000·160 m²·฿103,125/m²·3 beds
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  • ฿17,000,000·166 m²·฿102,410/m²·3 beds
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  • ฿23,500,000·225 m²·฿104,444/m²·3 beds
  • ฿23,500,000·225 m²·฿104,444/m²·3 beds
  • ฿45,000/mo·160 m²·3 beds
  • ฿60,000/mo·160 m²·3 beds
  • ฿55,000/mo·160 m²·3 beds
  • ฿60,000/mo·160 m²·3 beds
  • ฿65,000/mo·160 m²·3 beds
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    1. Home
    2. For sale
    3. Watthana
    4. Royal Castle Sukhumvit
    5. Royal Castle Sukhumvit, bangkok
    For sale

    Source details

    Recency
    Listed on Sep 14, 2026 (1w ago)
    Developer
    Sutapat Pariwong

    Cost of buying

    Land Office fees and taxes on top of the price. An estimate: the exact amounts are set by the Land Office on transfer day.

    Official appraisal
    ฿61,800/m² × 160 m² = ฿9,888,000
    Treasury Department appraisal, building median (฿58,300–฿72,800/m² by floor) · Registered as: รอยัล คาสเทิล สุขุมวิท
    Asking price is 1.67× the official appraisal
    Valid until 31 Dec 2026 (the next appraisal cycle starts in 2027). Source: Treasury Department (assessprice.treasury.go.th)
    Transfer fee (2 % of appraisal)· split฿197,760
    Stamp duty (0.5 %)· seller฿82,500
    Withholding income tax· seller฿319,120
    You pay on top of the price฿98,880
    All-in for the buyer฿16,598,880
    Seller's taxes and fees฿500,500

    No fee relief: it needs price, appraisal and loan ≤ ฿7M.Taxes are the seller's by custom, but it's negotiable: some sellers ask for a price "net" of fees.Individual sellers: on the appraisal, less a deduction by years held, at progressive rates (max 20 % of the price). Companies: 1 %.Estimate for guidance only, not tax or legal advice. Rules as of September 2026.

    Location

    Open in Google Maps
    • 488 m to BTS Phrom Phong
    • 1.2 km to MRT Sukhumvit
    • 1.3 km to BTS Asok
    • 1.3 km to BTS Thong Lo
    • 1.8 km to MRT Queen Sirikit National Convention Centre
    • 1.9 km to MRT Phetchaburi

    78 sale listings in a 146-unit building

    Net rental yieldWhat's left after the recurring costs of actually letting this unit out, on top of the rental estimate above.No fee reported for this project: estimated from similar buildings nearby.Vacancy assumes 30 days between tenants (default of 1 month — not enough history for this building yet).Estimate for guidance only: based on asking rents (not signed contracts) and simplified tax/fee rules. Not tax or investment advice.

    Estimated gross rent฿749,510
    Common area fee− ฿81,600
    Vacancy allowance− ฿61,604
    Letting agent fee (1 month/year)− ฿62,459
    Land & Building tax− ฿1,978
    Furnishing & maintenance allowance− ฿37,476
    Net annual income฿504,394
    Net yield
    3.0%
    2.6% – 3.3%
    vs. 4.5%% gross
    4.5%
    Total investment
    ฿16,598,880
    Price + ฿98,880 buyer's costs

    Cost of owning: ~฿6,800/mo common fee (฿43/m²/month)

    Flood risk:MediumNearest: ถนนสุขุมวิท จากแยกอโศก ถึงสุขุมวิท 71 (flood-prone road segment) · ~479 mA BMA-documented flood-prone spot is within easy reach of this location.1 documented spot within 800 mPosition is this project's approximate location (median of nearby listings), not this exact unit.Based only on proximity to points BMA itself has flagged as flood-prone or flood-watch — not a hydrological model, and not the 2011 flood extent. A location with nothing nearby is not proven flood-safe: BMA's list covers the spots it chose to document, not a wall-to-wall survey. Source: Bangkok Metropolitan Administration, Department of Drainage and Sewerage (public map data)

    Key facts

    Price vs market
    3 % above market
    vs 60 similar units in this condo
    Net rental yield
    3.0% net yield
    4.5% gross before costs
    Buying costs
    ฿98,880
    Transfer fee & taxes, 50/50 split, cash
    Common fee
    ฿6,800/mo
    Estimated, ~฿43/m² per month
    Could rent for
    ฿62,459/mo
    4.5 % gross yield
    Project
    Royal Castle Sukhumvit
    Built
    1993
    Floors
    24
    Units
    146

    Building facilities24h security · CCTV · Golf simulator · Gym · Keycard access · Lift · Parking · Playground · Sauna · Swimming pool

    Commute to business hubsEstimated from OpenStreetMap rail lines, typical dwell/transfer times and walking speed — not a live timetable.Position is this project's approximate location; walking time is approximate too.

    • Asok / Sukhumvit
      Walk 8 min → BTS Phrom Phong → Asok / Sukhumvit (1 stop)
      ~13 min
    • Siam
      Walk 8 min → BTS Phrom Phong → Siam (5 stops)
      ~21 min
    • Silom
      Walk 8 min → BTS Phrom Phong → Silom (7 stops)
      ~25 min
    • Rama 9
      Walk 8 min → BTS Phrom Phong → MRT Sukhumvit → Rama 9 (3 stops)
      ~25 min
    • Sathorn
      Walk 8 min → BTS Phrom Phong → Sathorn (8 stops)
      ~27 min

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    1 similar listingsSame project, beds, size and price, but the floor differs or is unknown — might be a different unit.

    ListingFloorAgentPostedPrice
    PropertyHubSale Condo Royal Castle Type 3 Bedroom BTS Phrom phong↗
    		11—21 Aug 2026฿16,500,000

    Price history

    Observed atPrice
    26 Sept 2026, 20:24฿16,500,000

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