Diamond Twin Tower

Tonle Bassac itself is an inner-city riverside neighborhood, bordered by the Bassac River and close to Monivong and Sihanouk boulevards. It has developed into one of Phnom Penh’s embassy and high-rise hubs and is often grouped with BKK1 as part of the main central residential and commercial core.

Within this context, Diamond Twin Tower is:

• A short drive from AEON Mall 1, NagaWorld and the broader Koh Pich entertainment cluster.
• Surrounded by other large mixed-use projects such as The Bridge, The Peak, DI Riviera and Casa Meridian, which collectively define the skyline of Tonle Bassac/Diamond Island.

For residents, this means immediate access to malls, restaurants, event venues and offices, but also the typical trade-offs of an inner-city growth corridor. There is ongoing construction in the area, busy traffic during events and a generally urban feel rather than a quiet suburban environment.

Development profile

Diamond Twin Tower is a high-end mixed-use project developed by Chao Ting International on a land parcel of about 5,224 sqm, with a 30-storey tower and a total of around 482 condominium units and 160 office suites.

Construction started around 2017 and practical completion was reached in 2019, so the project is relatively new but past the initial handover period.

Key structural details:

• Use mix: residential condominiums, hotel, office and retail, all within a high-rise twin-tower format.
• Height and scale: approximately 30 floors above ground and around 100–130 m in height, depending on the tower and the measurement method.
• Parking: 400+ car parking spaces shared between the residential and office components.

From an investment and planning point of view, this positions Diamond Twin Tower as a typical “vertical city” scheme with apartments, offices, services and leisure stacked on a relatively compact footprint in a central location.

Residential component (condominiums)

The condominium element occupies one of the towers, with a range of unit types from studios to three-bedroom apartments. the residential mix and size ranges are:

• Studios: around 34 sqm
• 1-bedroom units: roughly 39–42 sqm
• 2-bedroom units: roughly 81–120 sqm
• 3-bedroom units: roughly 164–207 sqm

Layouts are generally compact and efficiency-oriented at the smaller sizes, with larger 2- and 3-bedroom units designed more like family apartments or higher-end residences with bigger living areas and balconies. Many units have floor-to-ceiling glazing to maximise city or river views, especially from the mid- to high-rise floors.

In practice, current usage in the building show:

• Smaller studios and 1-bedroom units commonly marketed for short and medium term rental (including serviced/apartment-hotel formats).
• 2- and 3-bedroom units more often used as primary residences or longer-term rentals.

Facilities and amenities

Across the residential tower, office tower and podium, the development includes a fairly broad range of shared facilities:

• Leisure & wellness: rooftop or high-level swimming pool, gym/fitness centre, spa-style facilities.
• Social & events: sky bar, banquet and conference halls, KTV/entertainment rooms.
• Everyday convenience: on-site restaurants, cafés and retail units at podium level; possible mini-mart and small retail services depending on current tenants.
• Building services: concierge or reception services, 24-hour security staff, CCTV, controlled access and building management.
• Parking & transport: multiple levels of car parking with several hundred bays; some and provision is made in some cases for motorbikes and bike parking.

From a practical perspective, residents should understand that facilities are shared with office, hotel and retail users. This can mean more activity in lift lobbies and parking areas during office hours, but also more on-site services compared with purely residential towers.

Office, hotel and retail components

Diamond Twin Tower is not only a condo building; the other tower and parts of the podium are dedicated to commercial uses. Skyscraper and leasing data describe the non-residential parts as:

• Grade A/B office space: office floors from roughly the lower to upper mid-levels, designed for business tenants with typical floorplates in the tens to hundreds of square metres.
• Hotel / serviced-apartment operations: some units are operated as hotel or serviced apartments under various brands, offering short-stay accommodation.
• Retail podium: lower levels along the street front used for banks, cafés, restaurants and other retail services.

For residents, this mixed-use setup brings foot traffic, extended opening hours in the podium and more diverse users in the building, which can be an advantage for convenience but may not suit buyers looking for a low-density, purely residential environment.

Market positioning and pricing context

Diamond Twin Tower typically sits in the upper mid to high-end of the Tonle Bassac condo market, in line with nearby mixed-use towers on Koh Pich and that actual prices depend heavily on floor height, orientation (river vs city view), and whether the unit is in original condition or has been upgraded.

Living in Tonle Bassac / Koh Pich

For a buyer or tenant trying to understand the location, a few key points about Tonle Bassac and Diamond Island are worth highlighting:

• Tonle Bassac is part of central Chamkarmon, with a mix of embassies, high-rise condos, villas and large commercial projects. It’s considered one of Phnom Penh’s more affluent and rapidly developing districts.
• Koh Pich (Diamond Island) has transformed from a largely undeveloped river island into a dense real-estate cluster with malls, convention centres, showrooms, residential towers and leisure facilities, and is often compared to regional waterfront new-town projects.
• Daily life here is urban and high-rise: strong access to services and nightlife, but with the usual city-centre trade-offs such as traffic at peak times and less greenery than in outer districts.

Ownership and practical considerations

Diamond Twin Tower is structured as a condominium within a mixed-use complex. Individual units are typically bought and sold on a strata-titled basis, in line with Cambodian law that allows foreign buyers to own strata titles above the ground floor (within the foreign-ownership quota for the building).

• Clarify the title type (strata title / hard title / co-owned building title) and whether it’s under the buyer’s personal name or a company.
• Note the approximate service-charge level and what it covers (security, cleaning of common areas, lifts, facilities, management fees, etc.).
• The unit may be being used as an investment (rented out) or as an owner-occupied home, as this affects a buyer’s expectations around wear and tear.

Because Diamond Twin Tower integrates residential, office and hotel components, buyers should also consider how the management company coordinates between these uses, what the rules are for short-term rentals, and how residents’ committees (if any) operate.