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Data last updated 28 Sept 2026, 18:14.

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DDproperty

Royal Castle SukhumvitAll units in this condo →

Watthana, Khlongtoei Nua · Google Maps
฿18,500,000฿96,904 / m²Fair price
3 beds3 baths
฿18,500,000
฿96,904 / 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% below the median price/m² of 60 comparable listings in this condo.

This listing
฿18,500,000
190.9 m² · ฿96,904/m²
At the median for 190.9 m²
฿19,153,685
฿653,685 less than the median
Typical range for this size
฿18,419,796 – ฿20,610,894
Comparables' median asking price: ฿16,950,000

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 × 190.9 m².

Estimated rent
฿74,526/mo
฿65,625 – ฿79,206/mo
Gross yield
4.8%
4.3% – 5.1%
Median rent of comparables
฿60,000/mo
136 rentals, any size
Rentals of similar size
  • ฿80,000/mo·190.9 m²·
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 #500569593
Posted at
18 Sept 2026
First seen
26 Sept 2026, 20:24
Last seen
26 Sept 2026, 20:24
Raw JSON
191 m²
Condo
฿18,500,000
Fair price
฿96,904 / m²
DDpropertyFor sale
View on DDproperty
Listed by
Bussara Sri-At
Bussara Sri-At✓
PROPERTY SCOUT BROKERAGE (THAILAND)
Agent pageContact on DDproperty ↗
Listed by
Bussara Sri-At
Bussara Sri-At✓
PROPERTY SCOUT BROKERAGE (THAILAND)
Agent pageContact on DDproperty ↗
This listing ฿96,904Median ฿100,328฿96,484 – ฿107,961
Similarly priced nearby
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3 beds
  • ฿80,000/mo·190.9 m²·3 beds
  • ฿80,000/mo·190.9 m²·3 beds
  • ฿80,000/mo·190.9 m²·3 beds
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  • ฿78,000/mo·190.9 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 18, 2026 (1w ago)
    Developer
    Bussara Sri-At
    Agency
    PROPERTY SCOUT BROKERAGE (THAILAND)

    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

    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 × 190.9 m² = ฿11,798,238
    Treasury Department appraisal, building median (฿58,300–฿72,800/m² by floor) · Registered as: รอยัล คาสเทิล สุขุมวิท
    Asking price is 1.57× 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฿235,965
    Stamp duty (0.5 %)· seller฿92,500
    Withholding income tax· seller฿438,377
    You pay on top of the price฿117,982
    All-in for the buyer฿18,617,982
    Seller's taxes and fees฿648,859

    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.

    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฿894,306
    Common area fee− ฿97,364
    Vacancy allowance− ฿73,505
    Letting agent fee (1 month/year)− ฿74,526
    Land & Building tax− ฿2,360
    Furnishing & maintenance allowance− ฿44,715
    Net annual income฿601,837
    Net yield
    3.2%
    2.8% – 3.5%
    vs. 4.8%% gross
    4.8%
    Total investment
    ฿18,617,982
    Price + ฿117,982 buyer's costs

    Cost of owning: ~฿8,114/mo common fee (฿43/m²/month)

    Key facts

    Price vs market
    3 % below market
    vs 60 similar units in this condo
    Net rental yield
    3.2% net yield
    4.8% gross before costs
    Buying costs
    ฿117,982
    Transfer fee & taxes, 50/50 split, cash
    Common fee
    ฿8,114/mo
    Estimated, ~฿43/m² per month
    Could rent for
    ฿74,526/mo
    4.8 % 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

    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)

    Other units in Royal Castle Sukhumvit

    See all 233 in project

    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
    14
    ฿16,200,000
    2 beds · 140 m²
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    23
    ฿18,500,000
    3 beds · 191 m²
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    15
    ฿16,500,000
    3 beds · 164 m²
    DDproperty
    5
    ฿23,500,000
    3 beds · 225 m²
    DDproperty
    14
    ฿13,500,000
    3 beds · 133 m²
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    19
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    29
    ฿31,600,000
    4 beds · 265 m²
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    21
    ฿15,500,000
    2 beds · 140 m²
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    14
    ฿27,700,000
    4 beds · 220 m²
    DDproperty
    21
    ฿15,900,000
    3 beds · 144 m²
    DDproperty
    14
    ฿16,200,000
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    DDproperty
    9
    ฿18,500,000
    3 beds · 190 m² · Floor 3
    PropertyHubPropertyScout
    UnitBedsBathsSizeFloorPricePrice/sqmPosted
    14
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		22140 m²—฿16,200,000
    ฿115,714
    27 Sept 2026
    23
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		33191 m²—฿18,500,000฿96,90426 Sept 2026
    15
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		33164 m²—฿16,500,000฿100,32826 Sept 2026
    5
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		34225 m²—฿23,500,000฿104,44425 Sept 2026
    14
    Royal Castle Sukhumvit, bangkok
    DDproperty×2
    		32133 m²—฿13,500,000฿101,26825 Sept 2026
    19
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		33167 m²—฿17,500,000฿104,79025 Sept 2026
    29
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		45265 m²—฿31,600,000฿119,24524 Sept 2026
    21
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		22140 m²—฿15,500,000฿110,71424 Sept 2026
    14
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		44220 m²—฿27,700,000฿125,90923 Sept 2026
    21
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		32144 m²—฿15,900,000฿110,41723 Sept 2026
    14
    Royal Castle Sukhumvit, bangkok
    DDproperty
    		22140 m²—฿16,200,000฿115,71423 Sept 2026
    9
    คอนโด 3-ห้องนอน ที่ รอยัล คาสเซอร์ สุขุมวิท ใกล้ BTS พร้อมพงษ์
    PropertyHubPropertyScout×2
    Fully furnished
    		33190 m²3฿18,500,000฿97,36823 Sept 2026
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale
    For sale

    Price history

    Observed atPrice
    26 Sept 2026, 20:24฿18,500,000

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

    ListingFloorAgentPostedPrice
    DDpropertyRoyal Castle Sukhumvit, bangkok↗
    		—Magic Property26 Sept 2026฿18,500,000
    DDpropertyRoyal Castle Sukhumvit, bangkok↗
    		—Accom Asia21 Sept 2026฿18,500,000
    PropertyHub3-BR Condo at Royal Castle Sukhumvit near BTS Phrom Phong (ID 3317472)↗
    		3—19 Sept 2026฿18,500,000
    PropertyScoutคอนโด 3-ห้องนอน ที่ รอยัล คาสเซอร์ สุขุมวิท ใกล้ BTS พร้อมพงษ์↗
    		3agent17 Sept 2026฿18,500,000
    DDpropertyRoyal Castle Sukhumvit, bangkok↗
    		—Connex Property4 Sept 2026฿18,500,000