Koh Pich / Diamond Island: A Guide to Living, Renting and Investing

Prepared by the NovAsia Editorial Team

Koh Pich, also known as Diamond Island, sits only a few bridges from central Phnom Penh yet feels different from BKK1 or established Tonle Bassac streets. Roads are generally broader, buildings are newer, master planning is more visible and traditional street frontage is less dominant. Daily life depends heavily on the exact condominium, school, office cluster, park or event venue nearby.

One resident sees a modern address beside the southern business centre. Another finds it artificial, quiet at some hours and congested during events. An investor sees schools, offices, waterfront and new infrastructure. A tenant may notice service charges, limited everyday retail near a particular tower and repeated dependence on the same bridge approach.

Koh Pich should not be treated as one uniform neighbourhood with one rent or one investment conclusion. It contains different residential pockets, business areas, event spaces, parks and waterfront edges. The correct decision begins with the exact building and the future resident's weekly route.

What Koh Pich is today

OCIC describes Koh Pich as a mixed-use island district developed for urban living, business activity and public events. Development began in the mid-2000s and produced residential and commercial schemes including Elysée, Elite Town, La Seine, event facilities, schools and later office and community projects.

Current district guides generally describe Koh Pich as an evolving mixed residential and business area with modern condominiums, schools and event venues. It is no longer merely a construction zone or exhibition address, but it is not a mature traditional neighbourhood either.

The island combines:

• apartments and houses;
• offices;
• schools and higher education;
• exhibitions and weddings;
• parks and leisure areas;
• restaurants and cafes;
• waterfront space;
• links towards Koh Norea and eastern Phnom Penh;
• prominent large-scale developments.

This mix creates demand and also creates time-specific congestion and noise. School drop-off, office commuting, evening leisure and a major event place different pressure on the same streets.

Central on the map, separate in daily experience

Koh Pich forms part of Chamkarmon and is closely associated with Tonle Bassac. It lies near BKK1, Bassac Lane, AEON Mall Phnom Penh and the central riverfront. Yet the final part of almost every trip uses a bridge or a limited number of island roads.

The word central should be tested door to door:

• how long does departure take at 07:30;
• where does traffic queue near the bridge;
• which side of the island contains the school or office entrance;
• is a practical walking route available;
• is a U-turn required;
• can a ride-hailing vehicle reach the lobby easily;
• what happens after a large event;
• how does heavy rain affect access;
• where is the parking entrance.

Distance in kilometres can be misleading. A building near a western bridge may connect quickly to Tonle Bassac. A unit deeper in the eastern or southern part of the island can feel more isolated without a car.

The Koh Norea bridge expands the eastern network and connects Chamkarmon with Chbar Ampov. It can be valuable for National Road 1 and eastern projects, but its benefit depends on the destination. New connectivity does not remove bottlenecks; it changes where traffic gathers.

Bridges are both the advantage and the constraint

Koh Pich connects to the western bank through several approaches and to Koh Norea through the cable-stayed bridge opened in 2023. Official OCIC materials present the Norea link as part of Phnom Penh's expanding eastern connectivity.

For residents, the island offers routes:

• west towards Tonle Bassac and central Chamkarmon;
• north-west towards central Phnom Penh;
• east towards Koh Norea and Chbar Ampov;
• onwards towards National Road 1;
• into emerging eastern developments.

Test a real journey at the relevant time.

Record the range, not only an average. A commute varying from 15 to 40 minutes is different from a consistently 22-minute journey.

Walkability exists in pockets

Compared with many parts of Phnom Penh, Koh Pich has planned roads, some continuous pavements, parks and waterfront spaces. Some residents can walk to school, an office, cafe or park. The whole island is not uniformly pedestrian-friendly.

Check:

• pavement continuity;
• shade;
• crossings over wide roads;
• construction vehicles;
• lighting;
• midday heat;
• evening comfort;
• distance to groceries;
• pushchair accessibility;
• a dog-walking route;
• continuity along the waterfront;
• drainage after rain.

Five hundred metres can be unpleasant under direct sun and across broad junctions. Another building may have a shaded, comfortable route.

Walkability is strongest when home, school and work are in the same part of the island. It declines quickly when daily life requires crossing Koh Pich or leaving it several times.

Parks and open space are genuine differentiators

Coconut Park, Treellion Park, Elysée Garden and other landscaped or community-oriented spaces have helped create an environment different from dense inner streets.

Open space can support:

• walking;
• children's activities;
• cycling;
• social meetings;
• weekend routines;
• pet exercise;
• public events.

For an owner-occupier or family, this can matter more than a rooftop pool.

Access, hours and land use can change. A park may host events, be modified or sit beside a future project. Inspect current conditions rather than relying on older marketing images.

A green or river view is not automatically protected. Ask for current planning information, approved neighbouring projects and active construction.

Schools create a distinct family market

The Canadian International School of Phnom Penh has a major Koh Pich campus serving a broad age range. Other education providers and university activity add students, teachers and administrative staff to the island's demand base.

This cluster can create several rental groups:

• families seeking a shorter school journey;
• teachers and school employees;
• university staff and some students;
• households looking for two- and three-bedroom layouts;
• corporate tenants placing families near education.

School proximity does not add the same value to every apartment. Families still assess:

• bedroom count;
• storage;
• kitchen function;
• balcony safety;
• play space;
• parking;
• bus routes;
• noise;
• groceries;
• medical access;
• lease length;
• resident mix.

A small studio does not automatically benefit from family demand merely because it is near a school.

For a household choosing housing around education, confirm admission, exact campus and transport before signing a long lease or purchasing.

Everyday services vary by sub-area

Koh Pich has restaurants, cafes, small retailers, offices, schools and recreation, but the density of ordinary services is not consistent and may be lower than in BKK1 around a specific tower.

A resident may need:

• supermarket;
• pharmacy;
• clinic;
• cash machine;
• laundry;
• repair services;
• affordable local food;
• international groceries;
• cafe;
• reliable delivery;
• salon;
• gym;
• pet services;
• bank;
• fuel or charging.

Some buildings have useful ground-floor retail. Others require a trip for almost everything. Delivery reduces inconvenience but does not replace a nearby shop for a family.

Visit during a working weekday and again in the evening or at the weekend. Check which units are actually trading. Empty retail frontage can make a large development feel isolated.

Medical access is adequate, but not the island's defining strength

Koh Pich is close to private clinics and hospitals in Chamkarmon and central Phnom Penh, but major medical care is not necessarily located on the island.

Families and older residents should test:

• emergency exit time;
• the nearest 24-hour facility;
• ambulance access;
• whether the building address is easy to identify;
• reception procedures;
• pharmacy hours;
• a backup route during events.

A river-view apartment can be inconvenient for someone requiring frequent medical visits across a congested bridge.

Housing stock is highly varied

Koh Pich includes:

• older apartments;
• modern condominiums;
• serviced residences;
• large family units;
• houses in planned enclaves;
• mixed residential and business buildings;
• recent launches;
• partly occupied projects;
• developer-held inventory;
• resale apartments with different fit-outs.

Two one-bedroom units may differ in:

• usable floor area;
• balcony;
• ceiling height;
• view;
• finishes;
• air conditioning;
• washing machine;
• management quality;
• pool and gym;
• parking;
• service charge;
• electricity tariff;
• internet;
• building occupancy;
• title status;
• foreign-ownership availability.

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

Who chooses Koh Pich for living

Professionals working nearby

Offices on the island and in Tonle Bassac can make commuting short. These tenants may value a modern building, parking and waterfront more than traditional street life.

Families linked to schools

A short school run can support a higher rent or a larger apartment. Families need storage, safe access, everyday services and reliable building management.

Corporate tenants

Companies may favour professional management, security, furniture and predictable maintenance. Corporate lease requirements differ and should be checked early.

Education staff and students

Schools and higher education create demand, but budgets vary. A premium condominium may sit above the means of much of the student market.

Owner-occupiers

People who enjoy planned streets, parks, water and newer infrastructure may accept a lower investment yield for personal convenience.

Short-stay visitors

Events and business travel can generate temporary demand. Short-term letting depends on building rules, management capability and applicable regulation. Do not base an investment case on nightly rental without verifying all three.

Who may prefer another area

Koh Pich may not suit:

• someone wanting dense street life at the door;
• a person without transport who works far from a practical route;
• a family needing all services within five minutes;
• a resident highly sensitive to event or construction noise;
• an investor depending on broad budget demand;
• a buyer requiring quick resale;
• someone who prefers a mature low-rise neighbourhood;
• a commuter working far north or west.

BKK1 generally offers denser services and an established international rental market, but can be more expensive and congested. Tonle Bassac is more integrated into the street grid, although building quality varies. Chroy Changvar has different waterfront scale and bridge dependence. Koh Norea is newer and potentially important, but less mature and more construction-led.

Asking rent is not achieved rent

Koh Pich listings mix developer inventory, private resale, serviced accommodation and different furniture packages. A unit may remain online after letting, and the same property may be advertised by several agents.

Establish achievable rent using:

• the same building;
• the same layout;
• similar usable area;
• similar floor and view;
• comparable furniture;
• parking;
• lease length;
• included services;
• service charges;
• current competing availability;
• recent negotiated terms;
• tenant type.

Do not value an older building from one premium unit in a new development.

A sensible evidence hierarchy is:

1. A signed lease or verified recent transaction in the same building.
2. Real available units confirmed by management.
3. A closely comparable neighbouring building.
4. A broader area guide.
5. Developer marketing yield.

Where evidence is thin, use a range and state assumptions rather than inventing one precise average.

Events create activity and inconvenience

Koh Pich has major event, exhibition and wedding venues. They support restaurants, transport and business activity, while also creating:

• traffic queues;
• music;
• parking pressure;
• temporary route changes;
• crowds;
• large differences between days;
• additional security checks.

Visit a building during an actual event. A high floor does not always remove low-frequency sound.

Ask the manager how often events occur, whether residents complain, how access changes, where visitors park and whether deliveries are affected.

The same activity can be attractive to a social professional and unacceptable to a family seeking quiet.

Construction risk is site-specific and changes over time

The island continues to develop. Empty plots, road works and new towers can alter views, noise and routes.

Check:

• active sites;
• approved projects;
• working hours;
• truck routes;
• dust;
• piling;
• expected completion;
• developer reliability;
• future roads;
• utilities work;
• possible entrance changes.

A future skyline can mean years of disruption. Completion can also support long-term value. Both effects should be modelled.

Do not promise a protected river view without a legal or planning basis.

Waterfront living needs technical due diligence

Water views are attractive, but exposure to wind and moisture adds questions:

• window seals;
• facade performance;
• balcony drainage;
• corrosion;
• external air-conditioning equipment;
• humidity;
• mould history;
• waterproofing;
• insects;
• wind pressure;
• sun direction;
• heat gain;
• basement and parking protection;
• pumps;
• road access after intense rain.

Koh Pich should not be labelled universally flood-safe or flood-prone without building-level evidence. Ask about drainage history, basement incidents and road access during heavy rainfall.

A river-facing unit may receive strong afternoon sun. This affects curtains, cooling demand and electricity cost.

Building management determines daily experience

A modern lobby does not prove strong management. Review:

• occupancy;
• lifts;
• generator;
• water pressure;
• security;
• parking;
• access cards;
• cleaning;
• pool and gym;
• fire systems;
• repair response;
• service charge;
• reserve fund;
• special assessments;
• short-term letting;
• owner committee;
• developer control;
• financial reporting;
• co-owner arrears.

Low occupancy can mean quiet amenities but weak retail, reduced service and low fund contributions. High occupancy supports activity but increases pressure on lifts and parking.

Speak with an existing resident rather than relying only on sales staff.

Why investment demand can exist

Potential demand drivers include:

• proximity to the southern centre;
• newer housing;
• schools and higher education;
• offices;
• events;
• parks and waterfront;
• the Koh Norea connection;
• eastern-city growth;
• owner-occupier interest;
• professional management in selected buildings.

None guarantees income. The apartment still has to match the market.

A stronger investment unit may have:

• an efficient one- or two-bedroom layout;
• good usable area;
• reasonable service charge;
• effective management;
• parking;
• a practical kitchen and washing machine;
• a quieter orientation;
• verified rental evidence;
• clear title;
• available foreign quota;
• no cheaper competing developer stock.

A weaker unit may have:

• a very large floor area and narrow tenant pool;
• high service charges;
• many identical vacancies;
• unclear documentation;
• an excessive river-view premium;
• inefficient layout;
• persistent event noise;
• direct developer competition;
• low occupancy.

Unsold developer inventory affects rent and resale

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

• discounts;
• instalment terms;
• furniture packages;
• rental guarantees;
• high agent commissions;
• direct marketing;
• unused units in new condition.

Ask how many units remain, which layouts, the real price after incentives, whether a rental pool exists, whether large owners control substantial stock and how much retail remains vacant.

A private seller cannot rely only on the launch price. A buyer compares the resale unit with the developer's current offer.

Tenants also compare private listings with an in-house leasing office that may bundle service and influence market rent.

Resale liquidity depends on the buyer pool

Potential buyers include:

• Cambodian owner-occupiers;
• foreign investors;
• families near schools;
• regional buyers;
• companies;
• existing tenants;
• neighbouring owners.

Liquidity improves with:

• clear title;
• a standard layout;
• realistic pricing;
• reasonable charges;
• good condition;
• an occupied building;
• transparent tenancy;
• foreign-quota availability;
• no unresolved mortgage;
• a clean building account.

It weakens with:

• a very high absolute price;
• highly personal design;
• attachment to the launch valuation;
• poor usable-area efficiency;
• extensive competing supply;
• unclear parking rights;
• weak management;
• an expected special assessment.

A view premium may be fully paid on purchase but only partly recovered through rent or resale. Separate personal value from investment value.

Calculate the apartment, not a headline yield

Net rental income = rent received - vacancy - management - building charges - tax - repair - replacement - insurance - owner costs

Current net yield = net income / realistic purchase or resale price

A Koh Pich apartment may rent well but require expensive furniture and high service charges. Another may produce less rent but keep a stable tenant and lower turnover.

Model at least three scenarios:

Do not treat a marketing rental guarantee as market rent without checking the contract and the guarantor's ability to pay.

Owner-occupiers and investors may reach different conclusions

An owner-occupier may accept a lower yield for:

• school proximity;
• park access;
• water view;
• quieter internal roads;
• a larger layout;
• a modern environment;
• walking to work.

An investor focuses on:

• depth of demand;
• net yield;
• vacancy;
• furniture replacement;
• resale;
• management;
• legal documentation.

A unit can be a very good home and only an average investment, or a strong rental unit and a poor fit for a family.

A practical comparison with nearby areas

Koh Pich and BKK1

Koh Pich offers newer planned spaces, selected parks, schools and waterfront, but depends on bridge access and has uneven retail density. BKK1 offers established services and broad international demand, but denser traffic and mixed building ages.

Koh Pich and Tonle Bassac

Koh Pich has a stronger island identity, clustered modern projects and event influence. Tonle Bassac is more embedded in the street network and gives more direct central access, but building quality is less uniform.

Koh Pich and Koh Norea

Koh Pich is more mature, with current schools, offices and events. Koh Norea is newer, more construction-led and carries greater uncertainty alongside future-growth potential.

Koh Pich and Chroy Changvar

Koh Pich is closer to the southern business centre and has a limited island footprint. Chroy Changvar offers a larger waterfront corridor with different bridge and commuting patterns.

Tenant checklist

During a viewing, test:

• work and school route;
• bridge traffic;
• supermarket access;
• deliveries;
• parking;
• lobby and lift waiting time;
• generator;
• water pressure;
• cooling;
• sun exposure;
• event noise;
• construction;
• management response;
• service charge and electricity tariff;
• internet;
• lease and deposit;
• short-term letting rules.

Sit quietly in the unit, open windows and notice corridor odour, lift noise and external activity. Ask a resident what breaks most often.

Buyer checklist

In addition to lifestyle, verify:

• private-unit title;
• seller identity;
• foreign quota;
• mortgage;
• developer inventory;
• building arrears;
• reserve fund;
• expected special assessments;
• real leases;
• vacancy;
• management agreement;
• service charge;
• parking right;
• furniture inventory;
• tax;
• resale comparables;
• neighbouring master plan;
• construction;
• insurance;
• rental restrictions.

Check usable area. A large advertised gross area can make the price per square metre look artificially low.

Obtain more than one rental and resale opinion, but ask for evidence behind every figure.

Who Koh Pich suits

Koh Pich is strongest for people whose lives connect with the southern centre, schools, offices, modern condominiums, parks or waterfront. It can suit owner-occupiers who prefer a planned environment and tenants who prioritise newer buildings over dense street life.

It is weaker for buyers relying on one average island yield, expecting BKK1-level retail at every entrance or paying a maximum launch premium merely for a bridge and view.

The conclusion always comes back to the building:

• a well-managed unit in an occupied project can perform steadily;
• an inefficient layout in an oversupplied tower can remain vacant;
• family housing near a school can have strong personal value;
• an expensive river view can be difficult to resell;
• an older building can outperform a new one when price and charges are realistic.

Treat Koh Pich as a collection of small locations rather than one postcode. Walk the exact route, visit at different times, verify actual leases and compare private pricing with current developer stock. Only then is it possible to decide whether Diamond Island is a convenient home, a workable investment or simply an attractive view.

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

Sources

1. Knight Frank Research — Cambodia residential and relocation materials describing Koh Pich within Phnom Penh's housing and mixed-use market.
2. OCIC Group — official Koh Pich materials covering the island's development, mixed-use role, residential enclaves, event facilities and public spaces.
3. OCIC / Norea City — official infrastructure materials on the Koh Pich–Koh Norea bridge and eastern connectivity.
4. Canadian International School of Phnom Penh — official information on its Koh Pich campus and school provision.
5. De Montfort University Cambodia — official information on its campus at Diamond Business Centre on Koh Pich.

Frequently asked

Is Koh Pich a separate district of Phnom Penh?

It is a large mixed-use island area within Chamkarmon and is administratively connected with Sangkat Tonle Bassac. The property market usually treats it as a distinct location.

Is Koh Pich suitable for a family with children?

It can be, especially when school or work is nearby. The island has international education, parks and relatively planned streets, but each building should be checked for everyday shops and real traffic conditions.

Can I rely on an average Koh Pich rent?

Not safely. Older apartments, serviced accommodation, houses and new condominiums are too different. Use recent evidence from the same building and a matching fit-out.

Is oversupply the main investment risk on Koh Pich?

It is one of several risks, together with unsold developer inventory, competition from newer projects, event and construction noise, building management, service charges and resale liquidity for the specific layout.