Koh Pich / Diamond Island: Living, Renting and Investing

Prepared by the NovAsia Editorial Team

Koh Pich, or Diamond Island, sits only a few bridges from central Phnom Penh, yet it feels different from BKK1 or the older streets of Tonle Bassac. Roads are generally wider, newer buildings dominate the skyline and the area reflects a more deliberate development plan. Traditional street life is less continuous, while the quality of daily life depends heavily on the exact condominium, school, office cluster or event venue nearby.

One resident may regard the island as a convenient modern extension of the city centre. Another may find it overly planned, quiet at certain hours and congested when a wedding, exhibition or major event ends. An investor sees waterfront views, schools, offices and continuing infrastructure. A tenant may focus instead on service charges, the walk to groceries and the fact that the same bridge is part of almost every daily journey.

Koh Pich should therefore not be analysed as a single district with one average price. It contains distinct residential, business, educational, event and waterfront zones. A decision depends on the exact building, the side of the island and the routes the future resident actually uses.

What Koh Pich is today

OCIC describes Koh Pich as a large mixed-use island development initiated in 2006. It has since developed residential quarters, commercial buildings, education, event venues and public spaces, including areas such as The Elysée, Elite Town and La Seine.

The island now combines:

• condominium and serviced-apartment living;
• villas and townhouses in planned quarters;
• offices and business centres;
• international schools and higher education;
• exhibition, convention and wedding venues;
• restaurants and cafés;
• parks and recreational areas;
• waterfront roads and views;
• links to Koh Norea and eastern Phnom Penh;
• further construction and land development.

This mix creates demand but also produces a distinctive rhythm. School traffic, office commuting, evening dining and a weekend event may put very different pressure on the same access roads.

Koh Pich is no longer merely a construction zone or exhibition destination. Nor is every part a mature neighbourhood with the density of ordinary shops and services found in BKK1. It is a collection of micro-locations at different stages of development.

Central on the map, separate in daily experience

Administratively, Koh Pich is within Chamkarmon and is closely associated with Tonle Bassac. It is near BKK1, Bassac Lane, AEON Mall Phnom Penh and the central riverside. Yet the final part of most journeys crosses a bridge and follows the island's internal roads.

The term central should therefore be tested door to door:

• How long does the exit take at 7:30 in the morning?
• Which bridge is used for the normal route?
• Does a school queue block the relevant turning?
• Can any part of the journey be walked safely?
• Is a long U-turn required?
• Where do app-based drivers actually collect passengers?
• What happens when a large event finishes?
• Are roads affected by heavy rain or works?

A home close to the western access points may be very convenient for Tonle Bassac and BKK1. A unit deeper in the eastern or southern part of the island may feel more isolated without personal transport, even though the map distance is modest.

The cable-stayed connection to Koh Norea has increased eastern connectivity. Its practical value depends on whether the resident travels towards Chbar Ampov and National Road 1 or needs to reach northern and western Phnom Penh.

Bridges are both an advantage and a constraint

Several bridges connect Koh Pich with the main city, while the Koh Norea link provides another route eastward. The network offers choices, but a bridge concentrates traffic into a limited point.

Test important journeys at the correct time:

Record the range, not merely one result. A journey that varies from 15 to 40 minutes affects family and working life differently from a predictable 22-minute route.

A resident who works on Koh Pich may enjoy a very short commute. A person travelling daily to Sen Sok or the far west of the city may find the island less convenient than its central appearance suggests.

Walkability exists in pockets

Parts of Koh Pich have broad roads, pavements, landscaped spaces and waterfront routes. Some residents can walk to school, work, a café or a park. That does not make the whole island continuously walkable.

Check:

• pavement continuity;
• shade;
• crossings over broad roads;
• construction entrances;
• evening lighting;
• midday heat;
• personal comfort after dark;
• the route to groceries;
• pushchair access;
• dog-walking space;
• drainage after rain.

Five hundred metres along an exposed road with difficult crossings can be less practical than a longer shaded route.

Walking works best when the building, school and workplace are in the same part of the island. If the resident must cross Koh Pich or leave it for every routine task, transport dependence increases quickly.

In February 2025, OCIC announced a collaboration with Grab intended to improve mobility and connectivity on Koh Pich. Such initiatives may make app-based transport more convenient, but residents should still test actual pickup points and availability rather than assuming uniform coverage.

Parks and open space are a genuine advantage

Public and semi-public open areas distinguish Koh Pich from many dense inner-city streets. Parks, waterfront sections and newer landscaped spaces can support:

• walking;
• children's activities;
• cycling;
• weekend recreation;
• meeting friends;
• dog walking;
• community events.

For a family living in an apartment, access to usable outdoor space may matter more than another rooftop amenity.

However, current operation must be inspected. A park can host events, close for maintenance or remain partly under development. A green view can also change when an adjacent plot is built.

OCIC's recent greening initiatives and planned park development indicate continuing investment in public space. They do not guarantee that every apartment has permanent access to an uninterrupted green outlook. Buyers should check nearby land and announced development rather than relying on old photographs.

Schools and universities create targeted housing demand

Education is one of Koh Pich's strongest identifiable demand drivers.

The Canadian International School of Phnom Penh has a Koh Pich campus serving a broad age range. De Montfort University Cambodia operates from Diamond Business Centre on the island, and additional education initiatives have continued to appear.

This can support demand from:

• families seeking a short school journey;
• teachers and school staff;
• university employees;
• some students;
• visiting academics and education-related professionals.

The impact depends on the apartment type. A family-sized unit with practical storage, safe balconies and parking may benefit from school proximity. A compact studio may receive little benefit from the same demand source.

Families also evaluate:

• number and size of bedrooms;
• kitchen quality;
• balcony and window safety;
• storage;
• children's facilities;
• car parking;
• school-bus access;
• noise;
• groceries;
• medical care;
• the resident profile of the building.

Proximity is valuable only when the route is genuinely easy at drop-off and collection times.

Daily services vary sharply by location

Koh Pich has restaurants, cafés, convenience retail, education, offices and recreational facilities, but the concentration of everyday services is uneven.

Residents may need:

• a supermarket;
• pharmacy;
• clinic;
• cash machine;
• laundry;
• affordable everyday food;
• parcel collection;
• bank services;
• gym;
• salon;
• pet services;
• maintenance providers.

Some buildings have active ground-floor retail. Others have commercial units that remain vacant or operate only at certain hours. Delivery services reduce the inconvenience but do not fully replace a nearby shop for a family with children or an older resident.

Inspect the immediate area twice: during a weekday and during an evening or weekend. Confirm which premises actually operate. A retail label on a masterplan is not the same as an open shop.

Healthcare access should be tested as a route

Koh Pich is reasonably close to private clinics and hospitals in central Phnom Penh, but major healthcare facilities are not necessarily located on the island itself.

A family, older resident or person with a chronic condition should check:

• the nearest appropriate 24-hour facility;
• the route off the island during peak traffic;
• ambulance access to the building;
• whether the address is easy to identify;
• reception support at night;
• the nearest late-opening pharmacy;
• a backup route during major events.

A river-view apartment may be unsuitable for someone who requires frequent medical visits if every appointment involves a congested bridge.

Insurance network arrangements should also be checked. The nearest clinic may not be the one accepted for direct billing.

Housing is highly varied

Koh Pich contains:

• older apartments;
• newer condominiums;
• serviced residences;
• large family units;
• villas and townhouses;
• mixed-use buildings;
• partly occupied towers;
• developer-held apartments;
• private resale stock with different furnishing standards.

Two one-bedroom apartments may differ significantly in:

• internal usable area;
• balcony size;
• ceiling height;
• view and orientation;
• fit-out quality;
• air-conditioning;
• washing facilities;
• building management;
• pool and gym operation;
• parking;
• service charges;
• electricity arrangements;
• internet;
• building occupancy;
• title status;
• availability for foreign ownership.

The area name is only the first filter. The building and the unit determine the result.

Who chooses Koh Pich as a place to live

Professionals working nearby

People employed on the island or in neighbouring Tonle Bassac may enjoy a very short commute. Modern buildings, parking and waterfront access may matter more to them than dense traditional street life.

Families connected to schools

Reducing the school journey can justify a higher rent. Such families usually require a functional kitchen, storage, safety, parking and reliable everyday services.

Corporate tenants

Companies often prefer professionally managed buildings, controlled access, furnished units, clear invoicing and responsive maintenance. Corporate leases may also impose stricter documentary requirements.

Education staff and some students

Schools and universities generate demand, but budgets vary. A premium condominium may not suit most students, while teaching and management staff may form a stronger segment.

Owner-occupiers

Some buyers value the planned environment, open space, new infrastructure and waterfront for personal use. Their priorities can differ from pure rental yield.

Short-stay visitors

Events and business activity can create temporary demand. Short-term letting still depends on building rules, the owner's contract and applicable requirements. It should not be assumed to be permitted or financially viable.

Who may prefer another area

Koh Pich may be less suitable for someone who:

• wants dense street life immediately outside the building;
• has no transport and works far from the island;
• requires many low-cost daily services within a five-minute walk;
• is sensitive to construction or event noise;
• wants the broadest possible tenant pool;
• expects a quick resale;
• prefers a mature low-rise neighbourhood;
• travels daily to northern or western Phnom Penh.

BKK1 usually offers denser services and a long-established foreign-resident market, but can be busier and more expensive. Tonle Bassac is more integrated into the ordinary street network, though building quality varies widely. Koh Norea has significant development potential but more active construction risk. Chroy Changvar provides a different waterfront environment and also depends on bridges and direction of travel.

Asking rent is not achieved rent

Koh Pich listings combine serviced residences, private apartments, developer stock and differently furnished units. The same apartment may be advertised by several agents, and a listing may remain online after its price or availability changes.

A credible rent estimate should use:

• the same building;
• the same layout;
• comparable usable area;
• similar floor and view;
• equivalent furniture;
• the same parking position;
• lease length;
• included services;
• service-charge treatment;
• current competing vacancies;
• recent negotiation outcomes;
• the intended tenant type.

A useful evidence hierarchy is:

1. A completed lease in the same building.
2. Current available units confirmed by management.
3. A genuinely comparable nearby building.
4. A broader area report.
5. A developer's advertised yield.

Where evidence is limited, publish a range and assumptions rather than a false precise average.

Event venues generate activity and disruption

Koh Pich contains major convention, exhibition and wedding venues. These support restaurants, transport and commercial activity, but may also cause:

• traffic queues;
• amplified music;
• parking pressure;
• temporary access controls;
• crowds;
• a sharp difference between ordinary and event days.

Visit a building during an actual event. High floors do not always protect against low-frequency sound.

Ask management:

• how often major events occur;
• which resident complaints are common;
• how vehicle access changes;
• what happens to visitor parking;
• whether noise rules are enforced.

A lively environment may suit one tenant and frustrate a family with a sleeping child.

Construction risk is plot-specific

Koh Pich continues to evolve. A vacant plot, road project or new tower can change views, noise and access.

Check:

• active works;
• officially announced projects;
• working hours;
• truck routes;
• dust;
• piling;
• expected completion;
• the developer's delivery record;
• planned roads and utilities;
• changes to entrances.

Future urban growth may improve services and long-term appeal. It can also mean years of disruption. Do not treat an open river or city view as permanent without a defensible planning or legal basis.

Waterfront buildings need technical inspection

A waterfront location is attractive, but the building should be checked for:

• window seals;
• façade condition;
• balcony drainage;
• corrosion;
• air-conditioning equipment;
• dampness and mould history;
• waterproofing;
• insects;
• wind exposure;
• afternoon sun;
• heat gain;
• basement protection;
• pumps and drainage;
• access during heavy rain.

Koh Pich should not be described as automatically flood-prone or automatically protected. The relevant evidence is building-specific: whether basements or access roads have flooded, how drainage performs and whether pumps and emergency systems are maintained.

A high apartment with a river view may also experience strong afternoon heat, increasing the need for blinds and air conditioning.

Building management determines the resident experience

A polished lobby is not proof of good management.

Review:

• actual occupancy;
• lift performance;
• backup power;
• water pressure;
• security;
• parking;
• access cards;
• common-area cleaning;
• pool and gym operation;
• fire systems;
• repair response;
• service charges;
• reserve funds;
• special assessments;
• short-term letting rules;
• owner participation;
• continuing developer control;
• financial reporting;
• unpaid owner contributions.

Low occupancy can mean peace and uncrowded facilities, but it may also mean empty retail and weaker maintenance funding. High occupancy supports community life while increasing pressure on lifts and parking.

Speak to a resident who is not involved in sales.

What may support investment demand

Potential demand drivers include:

• proximity to southern central Phnom Penh;
• modern residential stock;
• schools and universities;
• offices;
• events;
• parks and waterfront routes;
• improved eastern connectivity;
• owner-occupier demand;
• competent management in particular buildings.

None of these guarantees the performance of a particular unit.

A more defensible investment often has:

• a clear one- or two-bedroom layout;
• efficient usable area;
• a reasonable service charge;
• functioning management;
• practical parking;
• a proper kitchen and washing machine;
• a quiet orientation;
• evidence of achieved rents;
• registered ownership;
• a workable foreign-ownership position;
• no cheaper identical developer unit available.

A weaker unit may combine:

• excessive size and a narrow tenant pool;
• high service charges;
• many identical vacancies;
• unclear title;
• a large premium for a view;
• an awkward layout;
• persistent event or construction noise;
• cheaper developer stock;
• poor building occupancy.

Developer-held stock affects rent and resale

Where the developer retains many similar apartments, a private owner competes with:

• discounts;
• instalment plans;
• new furniture packages;
• rental guarantees;
• high commissions paid to agents;
• direct marketing;
• unused units in new condition.

Ask:

• how many apartments remain;
• which layouts remain;
• the effective price after incentives;
• whether there is a central leasing programme;
• how much stock is held by large investors;
• whether commercial units are occupied.

A private seller cannot rely on the project's original price list. Buyers compare the unit with today's developer offer.

Tenants may also compare a private owner with a building leasing office that controls a large pool of units and can offer standardised service.

Resale liquidity depends on the buyer pool

Potential buyers may include:

• Cambodian owner-occupiers;
• foreign investors;
• families linked to a school;
• regional purchasers;
• companies;
• existing tenants;
• neighbouring owners.

Liquidity tends to improve with:

• clear registered ownership;
• a standard, usable layout;
• realistic pricing;
• moderate service charges;
• good condition;
• a functioning occupied building;
• transparent rental history;
• a confirmed foreign-ownership route;
• no mortgage or management arrears.

Liquidity tends to weaken with a high total price, unusual layout, poor usable-area efficiency, large unsold supply, unclear parking, weak management or an expected special levy.

A river-view premium may be substantial at purchase but only partly reflected in rent. Separate personal enjoyment of the view from investment return.

Calculate the unit, not an advertised district yield

Use:

Net rental income = rent received − vacancy − management − service charges − tax − repairs − furniture and appliance replacement − owner-paid insurance

Then:

Current net yield = net rental income / realistic total acquisition or resale value

Model at least three cases:

The base case should drive the decision. Do not use a developer's rental guarantee as market rent without analysing the contract and the payer's capacity.

An apartment can be a good personal home but a mediocre investment. It can also rent efficiently while failing the needs of a particular family.

A practical tenant checklist

Inspect:

• the commute and school route;
• the bridge at peak time;
• groceries and delivery;
• parking;
• lobby and security;
• lift waits;
• backup power;
• water pressure;
• air conditioning;
• sunlight;
• event noise;
• construction;
• management response;
• service charges;
• electricity charging;
• internet;
• deposit and repair terms;
• building rules.

Spend at least fifteen quiet minutes inside the unit. Open windows and listen to the street, corridor, lift and nearby equipment. Ask a current resident what breaks or irritates them most often.

A practical buyer checklist

In addition, verify:

• the title to the individual apartment;
• the seller's identity and authority;
• foreign-ownership eligibility;
• mortgages and registered interests;
• developer inventory;
• arrears to the building;
• reserves and special assessments;
• real lease evidence and vacancy;
• the management agreement;
• the right to parking;
• the furniture inventory;
• taxes;
• comparable sales;
• surrounding development plans;
• technical condition;
• insurance;
• letting restrictions.

Determine the registered and usable areas. A broad advertised gross area can make the apparent price per square metre look artificially low.

Obtain at least two views on rent and resale, but ask for supporting examples rather than a general opinion.

The correct conclusion is building-specific

Koh Pich suits residents whose lives connect to southern central Phnom Penh, island schools, offices, parks or waterfront spaces. It can appeal to owner-occupiers who prefer modern planned surroundings over dense traditional streets.

It is less convincing for an investor relying on one average district yield, a tenant expecting BKK1-style retail on every corner or a buyer paying the maximum launch price purely for a bridge and skyline narrative.

A well-planned apartment in an occupied, professionally managed building may be a strong home or rental asset. An awkward unit in a tower with many identical vacancies may remain empty. A family apartment near school may have high personal value. A costly river view may be hard to recover on resale.

Treat Koh Pich as a group of micro-locations. Walk the actual route, visit at different times, check real lease evidence and compare private resale with current developer stock. Only then can Diamond Island be classified as a convenient home, a workable rental investment or simply an attractive view.

This article is for general information and is not individual legal, tax, financial or technical advice. Rental and resale assumptions should be checked for the specific building and apartment at the time of the decision.

Sources

1. OCIC Group — official information on the development of Koh Pich since 2006, its mixed-use functions, residential quarters, event facilities and continuing public-space initiatives. Checked 24 July 2026.
2. OCIC Group — official information on the Diamond Island Convention and Exhibition Centre and the 2025 collaboration with Grab to improve mobility on Koh Pich. Checked 24 July 2026.
3. Canadian International School of Phnom Penh — official information on the Koh Pich campus. Checked 19 July 2026.
4. De Montfort University Cambodia — official campus address at Diamond Business Centre, Koh Pich. Checked 24 July 2026.
5. Current building documents, management records, comparable leases and title searches for the specific apartment — required for any rental or investment decision.

Frequently asked

Is Koh Pich a separate district of Phnom Penh?

It is a major mixed-use island development within Chamkarmon, administratively associated with Sangkat Tonle Bassac. In the property market it is commonly treated as a distinct micro-location.

Is Koh Pich suitable for families with children?

It can be, particularly when school or work is nearby. The island has international education, parks and relatively planned streets, but families should test shops, healthcare and traffic on their own daily routes.

Can I rely on an average Koh Pich rent?

Not safely. Older apartments, serviced residences, villas and new condominiums differ too much. Use current comparable listings and, where possible, completed leases in the same building with similar size and furnishing.

Is oversupply the main investment risk on Koh Pich?

It is one risk among several, including developer-held inventory, competition from newer buildings, event and construction noise, management quality, service charges and the liquidity of the particular layout.