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Data last updated 29 Sept 2026, 04:23.

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DDproperty

The Monument ThonglorAll units in this condo →

Watthana, Khlong Tan Nua · Google Maps
฿39,900,000฿316,667 / m²Fair price27+ days listed
3 beds2 baths
฿39,900,000
฿316,667 / 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

7% below the median price/m² of 51 comparable listings in this condo.

This listing
฿39,900,000
126 m² · ฿316,667/m²
At the median for 126 m²
฿42,840,000
฿2,940,000 less than the median
Typical range for this size
฿42,332,016 – ฿54,121,855
Comparables' median asking price: ฿85,000,000

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

Based on 78 rentals in this condo: median ฿1,438/m² per month × 126 m².

Estimated rent
฿181,150/mo
฿175,000 – ฿191,140/mo
Gross yield
5.4%
5.3% – 5.7%
Median rent of comparables
฿350,000/mo
78 rentals, any size
Rentals of similar size
  • ฿150,000/mo·126 m²·
More details

Address

Subdistrict
Khlong Tan Nua
Address
998 Thonglor Road, Khlong Tan Nua, Watthana, Bangkok
Coordinates
13.74175, 100.58540

Listing history

Listing ID
DDproperty #500084965
Posted at
1 Sept 2026
First seen
26 Sept 2026, 20:26
Last seen
26 Sept 2026, 20:26
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126 m²
Condo
฿39,900,000
Fair price
฿316,667 / m²
DDpropertyFor sale
View on DDproperty
Listed by
Rattapon Sivamok
Rattapon Sivamok✓
FREELANCE REAL ESTATE AGENT (TH)
Agent pageContact on DDproperty ↗
Listed by
Rattapon Sivamok
Rattapon Sivamok✓
FREELANCE REAL ESTATE AGENT (TH)
Agent pageContact on DDproperty ↗
This listing ฿316,667Median ฿340,000฿335,968 – ฿429,539
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  • ฿39,900,000·126 m²·฿316,667/m²·3 beds
  • ฿39,900,000·126 m²·฿316,667/m²·3 beds
  • ฿39,900,000·126 m²·฿316,667/m²·3 beds
  • ฿83,000,000·253 m²·฿328,063/m²·3 beds
  • ฿83,000,000·252.6 m²·฿328,570/m²·3 beds
  • ฿82,577,625·250 m²·฿330,311/m²·3 beds
3 beds
  • ฿140,000/mo·126 m²·3 beds
  • ฿140,000/mo·126 m²·3 beds
  • ฿150,000/mo·126 m²·3 beds
  • ฿140,000/mo·126 m²·3 beds
  • ฿180,000/mo·125.2 m²·3 beds
    1. Home
    2. For sale
    3. Watthana
    4. The Monument Thonglor
    5. The Monument Thonglor, bangkok
    For sale

    Source details

    Recency
    Reposted on Sep 01, 2026 (3w ago)
    Developer
    Rattapon Sivamok
    Agency
    FREELANCE REAL ESTATE AGENT (TH)

    Location

    Open in Google Maps
    • 1.6 km to ARL Ramkhamhaeng

    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
    ฿215,850/m² × 126 m² = ฿27,197,100
    Treasury Department appraisal, building median (฿181,800–฿244,900/m² by floor) · Registered as: เดอะ โมนูเมนต์ ทองหล่อ
    Asking price is 1.47× 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฿543,942
    Stamp duty (0.5 %)· seller฿199,500
    Withholding income tax· seller฿1,742,246
    You pay on top of the price฿271,971
    All-in for the buyer฿40,171,971
    Seller's taxes and fees฿2,213,717

    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.

    269 sale listings in a 127-unit building

    Net rental yieldWhat's left after the recurring costs of actually letting this unit out, on top of the rental estimate above.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฿2,173,802
    Common area fee− ฿136,080
    Vacancy allowance− ฿178,669
    Letting agent fee (1 month/year)− ฿181,150
    Land & Building tax− ฿5,439
    Furnishing & maintenance allowance− ฿108,690
    Net annual income฿1,563,774
    Net yield
    3.9%
    3.7% – 4.1%
    vs. 5.4%% gross
    5.4%
    Total investment
    ฿40,171,971
    Price + ฿271,971 buyer's costs

    Cost of owning: ~฿11,340/mo common fee (฿90/m²/month)

    Flood risk:MediumNearest: ถนนเอกมัย จากปากซอยสุขุมวิท 63 ถึงคลองแสนแสบ (flood-prone road segment) · ~478 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)

    Commute to business hubs

    No BTS/MRT/rail station within a 1.5 km walk — you'd need a bus, taxi or car.

    Key facts

    Price vs market
    7 % below market
    vs 51 similar units in this condo
    Net rental yield
    3.9% net yield
    5.4% gross before costs
    Buying costs
    ฿271,971
    Transfer fee & taxes, 50/50 split, cash
    Common fee
    ฿11,340/mo
    ฿90/m² per month
    Could rent for
    ฿181,150/mo
    5.4 % gross yield
    Pets
    Small/medium pets, by building rules
    Project
    The Monument Thonglor
    Built
    2019
    Floors
    45
    Units
    127
    Developer
    SANSIRI

    Building facilities24h security · CCTV · Co-working space · Covered parking · Function room · Garden · Gym · Jacuzzi · Keycard access · Lift · Lounge · Motorcycle parking · +9 more

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    ฿102,000,000
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    UnitBedsBathsSizeFloorPricePrice/sqmPosted
    19
    The Monument Thonglor, bangkok
    DDproperty
    		32125 m²—฿31,900,000
    ฿255,200
    28 Sept 2026
    21
    The Monument Thonglor, bangkok
    DDproperty×2
    		23125 m²—฿32,000,000฿256,00028 Sept 2026
    21
    The Monument Thonglor, bangkok
    DDproperty
    		23125 m²—฿35,900,000฿287,20028 Sept 2026
    23
    The Monument Thonglor, bangkok
    DDproperty
    		23125 m²—฿34,700,000฿277,15728 Sept 2026
    24
    The Monument Thonglor, bangkok
    DDproperty
    		23126 m²—฿39,900,000฿316,66728 Sept 2026
    31
    The Monument Thonglor, bangkok
    DDproperty
    		23125 m²—฿39,500,000฿315,49528 Sept 2026
    34
    The Monument Thonglor, bangkok
    DDproperty
    		23126 m²—฿40,000,000฿318,72528 Sept 2026
    46
    The Monument Thonglor, bangkok
    DDproperty
    		23122 m²—฿26,000,000฿213,48228 Sept 2026
    34
    The Monument Thonglor, bangkok
    DDproperty
    		23125 m²—฿45,000,000฿359,42527 Sept 2026
    24
    The Monument Thonglor, bangkok
    DDproperty
    		34253 m²—฿95,000,000฿376,07427 Sept 2026
    25
    The Monument Thonglor, bangkok
    DDproperty
    		22125 m²—฿35,000,000฿280,00027 Sept 2026
    16
    The Monument Thonglor, bangkok
    DDproperty
    		35253 m²—฿102,000,000฿403,16227 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
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    For sale
    For sale
    For sale
    For sale

    Price history

    Observed atPrice
    26 Sept 2026, 20:26฿39,900,000

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

    ListingFloorAgentPostedPrice
    DDpropertyThe Monument Thonglor, bangkok↗
    		—SIXTYSIX PROPERTY-BKK11 Sept 2026฿39,900,000
    PropertyScoutคอนโด 3-ห้องนอน ที่ เดอะ โมนูเมนต์ ทองหล่อ ใกล้ ทองหล่อ↗
    		—agent15 Dec 2025฿39,900,000
    PropertyHubFor sale: The Monument Thonglor, beautiful condo, super luxury level, ready to move in, near BTS Thong Lo.- SW003010↗
    		24—26 Sept 2025฿39,900,000
    PropertyScoutคอนโด 3-ห้องนอน ที่ เดอะ โมนูเมนต์ ทองหล่อ ใกล้ ทองหล่อ↗
    		24agent6 Sept 2025฿39,900,000

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