How to Check the Operational Reliability of a Condominium Before Buying

Prepared by the NovAsia Editorial Team

A completed condominium is often judged by what a buyer sees during a short viewing: a clean lobby, a full swimming pool, moving lifts and a generator in the basement. Operational reliability, however, is revealed at less convenient moments — during a night-time power cut, on an upper floor when a water pump fails, after heavy rain or several years later when an imported component must be replaced.

A reliable building is one in which critical systems continue to perform, recover predictably after failure and have enough funding for maintenance and replacement. The installed equipment is only one part of the picture. Reliability also depends on:

• an accurate equipment register;
• preventive maintenance;
• competent contractors;
• regular functional testing;
• incident records;
• spare parts;
• trained staff;
• realistic budgets;
• collection of service charges;
• reserve funding;
• owner oversight.

A new building can be operationally fragile because commissioning is incomplete and construction defects remain unresolved. An older building can perform well because maintenance is disciplined and transparent.

The buyer does not need to become a building engineer. The goal is to determine whether enough evidence and procedure exist to justify confidence. Systems that cannot safely be inspected by a buyer should be reviewed by a qualified specialist.

Assess systems, not the length of the amenities list

A pool, gym, sauna, rooftop terrace and building automation all increase the number of assets that must be funded and maintained.

Each additional facility brings more:

• pumps and filters;
• waterproofing;
• control systems;
• electricity consumption;
• chemicals and consumables;
• contractor agreements;
• replacement cycles;
• liability exposure;
• owner costs.

The correct question is not “How many amenities does this project have?” It is “Which systems are essential to normal occupation, who maintains them, how often do they fail and how will replacement be funded?”

A practical priority order is:

1. Fire and life safety.
2. Main power and backup generation.
3. Water, sewerage and drainage.
4. Lifts.
5. Structure, facade and waterproofing.
6. Access control and security.
7. Communications and internet infrastructure.
8. Leisure amenities.

An attractive pool cannot compensate for an unreliable lift or a fire pump that has not been tested properly.

Request the building records before the technical visit

Ask the seller, developer or management company for the records that are reasonably available. These may include:

• completion and occupation approvals where applicable;
• co-owned-building regulations and house rules;
• as-built drawings, where retained;
• operation and maintenance manuals;
• equipment register;
• warranties;
• commissioning and test reports;
• maintenance contracts;
• service reports;
• incident log;
• insurance information;
• annual management budget;
• service-charge collection report;
• reserve-fund information;
• planned major works;
• construction-defect schedule;
• owner-meeting minutes or notices.

Some technical drawings may be restricted for security or confidentiality reasons. Refusal to hand a prospective buyer every drawing is not automatically suspicious. The stronger question is whether management can provide controlled evidence that critical systems are identified, maintained and tested.

A building with no reliable equipment register, maintenance calendar or fault history should be treated as higher risk, regardless of age or appearance.

Cambodia's construction framework and the rules for co-owned buildings provide the local legal context for quality, safety, common systems and shared maintenance obligations. International standards such as ISO 41001 and specialist NFPA or ASME documents can offer useful benchmarks, but they should not be presented as automatically binding Cambodian law unless adopted through regulation, contract, project specification or insurance requirements.

The equipment register is the starting point

Professional management should know what it is responsible for. A typical register covers:

• generator;
• automatic transfer switch and distribution equipment;
• transformers;
• passenger and service lifts;
• fire pumps;
• domestic-water pumps;
• sewerage and drainage pumps;
• water tanks;
• fire-alarm panel and detectors;
• sprinklers, hydrants and standpipes;
• emergency lighting;
• access-control system;
• CCTV;
• ventilation equipment;
• pool plant;
• facade-maintenance systems;
• telecommunications equipment;
• water treatment;
• lightning protection.

For each major asset, useful records include:

• manufacturer and model;
• serial number;
• installation date;
• warranty period;
• expected service life;
• maintenance contractor;
• maintenance frequency;
• last completed service;
• next scheduled service;
• critical spare parts;
• replacement budget.

If the management team cannot identify the lift model or generator capacity, it is difficult to believe that long-term asset management is under control.

Preventive maintenance matters more than emergency response

A reactive building waits for equipment to fail. A preventive system schedules inspection, cleaning, lubrication, calibration, battery replacement, load testing and renewal of consumable components.

Ask:

• Is there an annual maintenance plan?
• How much of it was completed?
• Which items are overdue?
• Who signs off contractor work?
• Are contractor invoices paid?
• Is quality checked independently?
• Which faults keep recurring?

A paid invoice proves that a contractor attended. It does not prove that the agreed scope was completed or that recommendations were closed. Look for service reports that identify defects, actions and follow-up dates.

Strong management can explain not only what failed but what changed afterwards.

Generator: verify the connected load

“Full backup power” has no standard commercial meaning. A generator may power only emergency systems, or it may also support a lift, water pumps, corridors, access control and limited apartment circuits.

Request a connected-load schedule:

The presence of a generator does not mean that an apartment will have ordinary power during an outage.

A qualified engineer should also assess whether capacity is sufficient for actual emergency demand, including motor starting currents, load priorities, future additions and automatic shedding of non-essential loads. A generator can start successfully and still trip when lifts and pumps start together.

Ask for a recent test under a representative load. Starting the engine without connecting the building proves little.

Automatic transfer, fuel, batteries and ventilation

The automatic transfer switch detects loss of mains power, starts the generator and connects emergency loads. Confirm:

• whether changeover is automatic or manual;
• typical changeover time;
• date of the latest functional test;
• whether the test included real loads;
• whether return to mains supply was tested;
• whether a bypass arrangement exists;
• recorded failures;
• responsible contractor;
• availability of replacement control parts.

A running engine is useless if power is not transferred to the building.

Common generator failure points include:

• discharged starting batteries;
• failed chargers;
• contaminated or old fuel;
• low fuel level;
• overheating;
• poor ventilation;
• exhaust defects;
• overdue filters and oil;
• ignored alarms.

Ask about tank volume, expected runtime at actual emergency load, refuelling procedure, minimum stock level, fuel-quality controls, battery-replacement date, weekly or monthly test runs and recent major servicing.

Do not calculate runtime by dividing full tank capacity by a brochure fuel-consumption figure. Actual load and maintenance history matter.

Outage records are more useful than promises

Where available, request 12 to 24 months of records showing:

• date and duration of mains failure;
• whether the generator started;
• changeover time;
• equipment that failed;
• fuel shortage or overheating;
• lift and pump performance;
• resident complaints;
• corrective actions.

A building that experienced failures but documented and corrected them may be more dependable than one that insists “there have never been any problems” while keeping no records.

Residents can confirm what actually happened: whether lifts and water remained available, whether apartment sockets worked and how management communicated during the outage.

Lift reliability is more than lift quantity

Record:

• number of passenger, service and any specialist lifts;
• floors served;
• manufacturer and age;
• capacity and speed;
• zoning arrangement;
• estimated occupancy;
• peak waiting times;
• generator coverage;
• maintenance contractor;
• breakdown history.

Observe the building in the morning, evening and at a weekend. Ask what happens when one lift is removed from service. Do not attempt unsafe tests or obstruct lift doors.

Review:

• active maintenance contract;
• scope and frequency;
• monthly service reports;
• emergency call-outs;
• shutdown log;
• inspection and test reports;
• safety-device testing;
• replacement of major components;
• local spare-parts availability;
• staff training for passenger release.

An international brand is not evidence of good local maintenance. A lift can remain out of service for weeks if a controller or door component must be imported.

A useful operational concept is availability:

Availability = (planned operating time − downtime) / planned operating time

Management may not calculate the ratio formally, but it should still be able to state the longest recent outage, common fault, typical contractor response time and expected delivery period for major parts.

Warning signs include repeated entrapments, rough levelling, violent starts, recurring faults, unclear release procedures and one lift being permanently labelled “under maintenance”.

Water supply, storage and pressure

Understand the water path:

Municipal or other source → lower tank → treatment where applicable → pumps → upper tank or pressure system → apartments

Ask about:

• source of supply;
• storage capacity;
• tank-cleaning schedule;
• redundancy of pumps;
• pressure zones;
• upper-floor complaints;
• leaks;
• outage history;
• generator supply to pumps;
• water-testing records, if any.

A full tank does not deliver water if the pumps fail. Critical pumps should not be a single point of failure. Ask whether there is a duty-and-standby arrangement, automatic alternation, manual bypass, alarms and spare parts.

Test water in the kitchen and shower, open more than one outlet, check hot water and, where practical, visit at a busy time. One good tap test does not prove system resilience, so speak with residents in the same pressure zone.

For tanks, ask about sealed covers, overflow, level sensors, access control, leakage and sediment. Do not enter confined technical spaces.

Sewerage, drainage and basement flooding

Common failures include smells, blocked pipes, backflow, pump failure, basement flooding, balcony overflow and clogged roof drains.

Request information about:

• sewerage and drainage-pump layout;
• standby capacity;
• high-level alarms;
• generator supply;
• cleaning schedule;
• past incidents;
• remedial works.

After heavy rain, inspect permitted basement and parking areas. Look for tide marks, corrosion, repaired lower wall sections, sandbags, raised electrical panels, damp smells, lift shutdowns and signs that drainage at the ramp is inadequate.

Fresh paint can conceal previous water levels. Ask for incident photographs, insurance claims and repair invoices.

Flooding can damage vehicles, pumps, generators, electrical equipment and lift components even when apartments remain dry.

Fire-alarm and fire-suppression systems

For the fire alarm, ask about:

• make and model of the main panel;
• zoning;
• smoke and heat detectors;
• manual call points;
• audible and visual notification;
• remote monitoring;
• persistent faults;
• latest test date;
• maintenance contractor;
• procedure when part of the system is disabled.

A panel showing a permanent fault is a serious concern. Frequent false alarms are also dangerous because residents may start ignoring warnings.

For water-based fire protection, relevant assets may include:

• fire-water tank;
• fire pumps;
• sprinklers;
• standpipes and hydrants;
• hose reels;
• valves and gauges;
• test points.

Ask for pump-test reports, valve inspection records, sprinkler and standpipe checks, water-level monitoring, impairment procedures and closure of defects. Do not operate valves or start pumps during a viewing.

NFPA 25 and NFPA 72 can be useful international reference points for inspection, testing and maintenance, but they should be cited as benchmarks rather than automatically applicable Cambodian law.

Stairs, fire doors and emergency lighting

Walk the permitted evacuation route:

• stairs should be free of storage;
• doors should close properly;
• seals and hardware should be intact;
• exit signs and emergency lighting should work;
• final exits should lead to a safe place;
• access control should not trap occupants.

Typical failures include wedged fire doors, bicycles or boxes on landings, a locked final exit, construction materials in the stair and decorative lobby lighting that disappears during an outage.

A sophisticated alarm system cannot compensate for a blocked escape route.

Ask for emergency-light battery-test records and fire-drill information. Fire extinguishers should be accessible, serviced and appropriate for the location, but they are only one layer of protection.

Electrical systems should be reviewed by a qualified person

A buyer should not open electrical panels or test live equipment.

An electrical engineer may assess transformers, main switchgear, protection, earthing, lightning protection, floor distribution, generator integration, signs of overheating, water exposure, labels and spare capacity.

A buyer can still notice burnt smells, repeated breaker trips, temporary cables, open cabinets, water near electrical equipment and resident complaints about voltage fluctuations.

Request incident records for electrical fires, transformer failures and unstable power.

Internet and communications infrastructure

For remote work, ask:

• which providers serve the building;
• whether fibre reaches individual apartments;
• whether alternative routes or a second provider exist;
• where common switches are located;
• whether the telecommunications room has backup power;
• who maintains internal risers;
• how contractors gain access;
• whether new lines can be installed.

Generator coverage does not guarantee internet if the common switch or optical equipment remains unpowered.

Test actual service in the apartment, including mobile signal and any work VPN used by the buyer.

Access control and security systems

Review cards, electronic locks, intercoms, CCTV, barriers, visitor registration and parking controls. Ask what happens during a power cut, how lost cards are cancelled, whether former residents' access is removed, how long recordings are retained and who can review them.

Security systems must not obstruct evacuation. A modern app with one shared administrator password is still weak management.

Facade, roof and waterproofing

Inspect for facade cracks, failed sealant, damaged window gaskets, balcony leaks, podium waterproofing, expansion joints, basement dampness and repeated cosmetic repainting.

Request facade-inspection reports, leak maps, waterproofing history, warranty claims and planned repairs.

Water can appear far from its source. Repainting an apartment ceiling does not resolve a facade joint or common pipe failure.

Incident management reveals the true operating culture

The incident log should capture matters such as:

• lift entrapment;
• generator failure;
• water outage;
• leaks and flooding;
• fire alarm events;
• electrical outages;
• sewerage incidents;
• security breaches;
• falling facade elements;
• closure of amenities.

Ask: “What were the three most serious incidents during the previous year, and what changed afterwards?”

A strong manager does not claim that nothing ever goes wrong. It demonstrates investigation, corrective action and follow-up.

Contractors and spare parts

For each critical system, identify the contractor, contract term, response time, emergency cover, preventive scope, excluded work, unpaid invoices and warranty arrangements.

One inexpensive general contractor claiming to maintain lifts, fire systems and generators should be examined carefully unless specialist subcontractors are clearly identified.

The contract itself is not enough. Compare contracted visits with actual service reports and payment records.

For imported equipment, ask about lead times and locally stocked critical parts. Repeated temporary repairs can indicate that a major replacement is approaching.

New-building defects and commissioning

A recent condominium may still have:

• recurring leaks;
• poorly adjusted lifts;
• undersized generator arrangements;
• incomplete fire-system work;
• drainage errors;
• unfinished commissioning;
• defective windows;
• missing manuals.

Request a defects schedule showing open items, corrected items, responsible parties, deadlines, warranty status and disputes.

“Developer will fix it” is not a programme. If the developer also controls management, ask who independently accepts the remedial work.

Commissioning evidence may include integrated testing of the generator, transfer switch, lifts and pumps; fire-alarm cause-and-effect tests; pressure tests; balancing; as-built records; staff training and closure of outstanding defects.

A completion approval does not prove that every operating scenario has been retested recently.

Service charges, collection and reserves

Reliability needs money. Review:

• annual budget;
• actual spending against budget;
• collection rate;
• owner arrears;
• developer subsidies;
• utilities;
• maintenance contracts;
• payroll;
• insurance;
• reserve contributions.

A high collection rate supports reliability. A low rate may force management to defer preventive work.

A low service charge may indicate efficiency, but it may also mean that the building is underfunded or temporarily subsidised. Ask when any developer subsidy ends.

Future capital needs may include lift modernisation, generator overhaul, pumps, fire panels, facade sealants, waterproofing, pool plant and access-control replacement.

Ask whether there is a five-year capital plan, whether the reserve is separately accounted for, which major works are expected and whether special assessments have been discussed.

A building can operate adequately today while accumulating a serious future funding gap.

Speak with residents and visit at different times

Try to speak with an owner, tenant, building employee and independent rental or resale agent. Ask for facts and dates concerning water, lifts, generator performance, leaks, fees, special assessments, fire drills, internet and basement conditions after rain.

One frustrated resident may represent a personal dispute. The same specific story from several independent people is stronger evidence.

Visit on a weekday morning, in the evening, at a weekend and after heavy rain where possible. Observe lift queues, water pressure, parking, smells, noise, staff response and access controls. A buyer's viewing is only a staged snapshot.

Independent technical review

For a material purchase, an engineer or facilities specialist can review records and inspect accessible common systems.

The assignment may include:

• reviewing key documents;
• visually inspecting permitted equipment;
• identifying warning signs;
• recommending specialist tests;
• estimating near-term capital needs.

One engineer should not claim to certify fire, lift, electrical and structural safety beyond their competence. Specialist input may be needed.

If technical-room access is reasonably restricted, alternatives include an escorted inspection, recent photographs, maintenance reports, test certificates, contractor interviews, equipment schedules, incident logs and insurer reports.

The concern is not that a buyer cannot touch dangerous equipment. It is that management refuses to provide any reliable evidence.

A simple scoring framework

Score each area from 0 to 3:

• 0 — no evidence or a serious unresolved failure;
• 1 — weak, mostly reactive management;
• 2 — acceptable control;
• 3 — strong, documented system.

Do not average away a life-safety failure with a strong pool or attractive lobby. Some issues should be treated as a separate stop condition.

Warning signs

• generator tested only without load;
• transfer switch not tested;
• no fuel or battery records;
• expired lift contract;
• lift out of service for weeks;
• no standby water pump;
• repeated upper-floor water complaints;
• concealed basement-flood history;
• fire panel displaying a fault;
• wedged fire doors;
• no fire-pump testing;
• no incident log;
• no equipment register;
• unpaid contractors;
• weak service-charge collection;
• no reserve plan;
• developer subsidy about to end;
• recurring leaks repeatedly painted over;
• telecommunications equipment without backup power;
• management refuses all documentary evidence.

Final rule

A reliable condominium does not need to be perfect. It should have:

• an identified asset base;
• scheduled preventive work;
• tested critical functions;
• recorded failures;
• competent response;
• credible replacement funding;
• transparent management.

A weak building shows the opposite: equipment exists but is not tested, repairs are purely reactive, contractors are unpaid, service charges are insufficient and promises replace records.

The buyer's goal is not to obtain an absolute engineering guarantee. It is to distinguish manageable ageing from hidden operational fragility.

This article is for general information and is not a substitute for an individual engineering, fire-safety, electrical, lift, insurance, legal or facilities-management assessment. International standards are cited as professional reference points and should not be treated as automatically binding Cambodian requirements without checking the specific project and applicable rules.

Sources

1. Kingdom of Cambodia — Law on Construction and the legal materials of the Ministry of Land Management, Urban Planning and Construction concerning quality, safety, inspection and professional responsibility. Accessed 19 July 2026.
2. Royal Government of Cambodia — Sub-Decree No. 126 on the management and use of co-owned buildings, including common structures and shared water, electrical and sewerage systems. Accessed 19 July 2026.
3. International Organization for Standardization — ISO 41001:2018 and Amendment 1:2024 on facility-management systems. Accessed 19 July 2026.
4. National Fire Protection Association — NFPA 25 and NFPA 72 materials on inspection, testing and maintenance of water-based fire-protection systems and fire alarm systems. Accessed 19 July 2026.
5. ASME and Cummins — ASME A17 lift-safety materials and Cummins guidance on generator maintenance, load testing and automatic transfer switches. Accessed 19 July 2026.

Frequently asked

Is it enough to see the generator running once?

No. You also need the connected-load schedule, automatic-transfer testing, fuel and battery maintenance, a recent load test and outage records. Confirm which lifts, pumps and apartment circuits actually receive backup power.

Does a buyer need to enter every technical room personally?

No, and doing so may be unsafe or prohibited. Reliability can be assessed through an authorised engineer, maintenance logs, contractor reports, test results, incident history and evidence that systems operate as intended.

How can I tell whether the lifts are maintained properly?

Check the active maintenance contract, preventive-maintenance schedule, fault log, passenger-release procedure, spare-parts availability, inspection and testing records, outage duration and generator coverage.

Does a high service charge guarantee a reliable building?

No. Collection rates, actual budget allocation, preventive work, reserve funding, unpaid contractor bills and quality control matter more than the headline fee.