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DDproperty

Klass SiamAll units in this condo →

Pathum Wan, Wang Mai · Google Maps

฿7,300,000฿165,909 / m²Fair price

1 bed1 bath

฿7,300,000

฿165,909 / m²

View on DDproperty

Key facts

Price vs market

At market price

vs 12 similar units in this condo

Net rental yield

3.2% net yield

4.9% gross before costs

Buying costs

฿65,340

Transfer fee & taxes, 50/50 split, cash

Common fee

฿3,520/mo

฿80/m² per month

Could rent for

฿30,000/mo

4.9 % gross yield

Project

Klass Siam

Built

2017

Floors

Units

Building facilities24h security · CCTV · Garden · Gym · Jacuzzi · Keycard access · Library · Lift · Parking · Swimming pool

Price comparison

Fair price

About the same as the median price/m² of 12 comparable listings in this condo.

This listing

฿7,300,000

44 m² · ฿165,909/m²

At the median for 44 m²

฿7,272,490

Same as the median

Typical range for this size

฿7,083,900 – ฿7,462,653

Comparables' median asking price: ฿7,750,000

Rental estimate & yield

Based on 52 rentals in this condo: median ฿682/m² per month × 44 m².

Estimated rent

฿30,000/mo

฿29,173 – ฿31,467/mo

Gross yield

4.9%

4.8% – 5.2%

Median rent of comparables

฿30,000/mo

52 rentals, any size

Rentals of similar size

฿30,000/mo·44 m²·1 bed

Location

Open in Google Maps

Flood risk:Low

Commute to business hubs

Siam
Walk 3 min → BTS National Stadium → Siam (1 stop)
~8 min
Silom
Walk 3 min → BTS National Stadium → Silom (3 stops)
~12 min
Sathorn
Walk 3 min → BTS National Stadium → Sathorn (4 stops)
~14 min
Asok / Sukhumvit
Walk 3 min → BTS National Stadium → Asok / Sukhumvit (5 stops)
~16 min
Rama 9
Walk 3 min → BTS National Stadium → MRT Sukhumvit → Rama 9 (7 stops)
~28 min

24 sale listings in a 79-unit building

Other units in Klass Siam

See all 97 in project

Similar condos nearby

More condos like this

More details

Address

Subdistrict: Wang Mai
Address: Rama I Road, Wang Mai, Pathum Wan, Bangkok
Nearest transit: 260 m (3 min) from W1 National Stadium BTS
Coordinates: 13.74822, 100.52855 (approx.)

Listing history

Listing ID: DDproperty #500036898
Posted at: 24 Sept 2026
First seen: 26 Sept 2026, 20:16
Last seen: 26 Sept 2026, 20:16

Raw JSON

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

฿148,500/m² × 44 m² = ฿6,534,000

Treasury Department appraisal, building median (฿144,700–฿154,000/m² by floor) · Registered as: คลาส สยาม

Asking price is 1.12× the official appraisal

Valid until 31 Dec 2026 (the next appraisal cycle starts in 2027). Source: Treasury Department (assessprice.treasury.go.th)

Buyer is a Thai individualMortgage loanTransfer fee paid bySeller has owned itSeller in the house registration ≥ 1 yearSeller is a company (developer)

Transfer fee (2 % of appraisal)· split	฿130,680
Stamp duty (0.5 %)· seller	฿36,500
Withholding income tax· seller	฿153,690
You pay on top of the price	฿65,340
All-in for the buyer	฿7,365,340
Seller's taxes and fees	฿255,530

No fee relief: it needs price, appraisal and loan ≤ ฿7M.

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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

฿148,500/m² × 44 m² = ฿6,534,000

Treasury Department appraisal, building median (฿144,700–฿154,000/m² by floor) · Registered as: คลาส สยาม

Asking price is 1.12× the official appraisal

Valid until 31 Dec 2026 (the next appraisal cycle starts in 2027). Source: Treasury Department (assessprice.treasury.go.th)

Buyer is a Thai individualMortgage loanTransfer fee paid bySeller has owned itSeller in the house registration ≥ 1 yearSeller is a company (developer)

Transfer fee (2 % of appraisal)· split	฿130,680
Stamp duty (0.5 %)· seller	฿36,500
Withholding income tax· seller	฿153,690
You pay on top of the price	฿65,340
All-in for the buyer	฿7,365,340
Seller's taxes and fees	฿255,530

No fee relief: it needs price, appraisal and loan ≤ ฿7M.

Estimated gross rent	฿359,996
Common area fee	− ฿42,240
Vacancy allowance	− ฿29,589
Letting agent fee (1 month/year)	− ฿30,000
Land & Building tax	− ฿1,307
Furnishing & maintenance allowance	− ฿18,000
Net annual income	฿238,861

Estimated gross rent	฿359,996
Common area fee	− ฿42,240
Vacancy allowance	− ฿29,589
Letting agent fee (1 month/year)	− ฿30,000
Land & Building tax	− ฿1,307
Furnishing & maintenance allowance	− ฿18,000
Net annual income	฿238,861

Klass SiamAll units in this condo →

Key facts

Price comparison

Rental estimate & yield

Location

Commute to business hubs

Other units in Klass Siam

Similar condos nearby

Address

Listing history

1 similar listings

Price history

Net rental yield

Cost of buying

Source details

Location

Commute to business hubs

Cost of buying

Net rental yield

Key facts

1 similar listings

Other units in Klass Siam

Price history

Similar condos nearby

Klass SiamAll units in this condo →

Key facts

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

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

Location?Approximate: this source doesn't publish coordinates, so this is Klass Siam's location taken from other listings.

Commute to business hubs?Estimated 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.

Other units in Klass Siam

Similar condos nearby?Other projects with a 1 bed unit at a similar price and size, closest first.

Address

Listing history

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

Price history

Cost of buying

Source details

Location?Approximate: this source doesn't publish coordinates, so this is Klass Siam's location taken from other listings.

Commute to business hubs?Estimated 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.

Cost of buying

Key facts

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

Other units in Klass Siam

Price history

Similar condos nearby?Other projects with a 1 bed unit at a similar price and size, closest first.

Price comparison

Rental estimate & yield

Location

Commute to business hubs

Similar condos nearby

1 similar listings

Location

Commute to business hubs

1 similar listings

Similar condos nearby