Laoliu Healthy Mansion delivers every home as a single integrated contract. From needs assessment to the final re-test, the work runs through seven stages, and the design, MEP, and construction drawings are all issued by one party, which rules out conflict between suppliers and leaves no ambiguity about who is responsible. Every stage has defined deliverables and acceptance criteria.
The goal is not a quote. It is a judgement: can this house reach the targets you want? On site we measure dimensions and ceiling heights, record window and door specifications and orientation, inspect the building envelope as it stands, confirm equipment locations and electrical capacity, and learn how your household lives. We close with a feasibility judgement and a needs list. If the house is not suited to the work, we say so at this stage.
The goal at this stage is not a quote but a judgement: “Can this house reach the targets you want?”
The site work includes measuring each room's dimensions and ceiling height, recording window and door specifications and orientation, inspecting the building envelope as it stands (leaks, thermal bridges, missing insulation), confirming equipment locations and electrical capacity, and understanding the household's composition and daily habits.
You leave this stage with two documents: a preliminary feasibility judgement (what can be achieved, what cannot) and a needs list for you to confirm. If the assessment says the house is not right for the work, we say so now rather than after the contract is signed.
The seven stages are needs assessment and survey, target setting, single-source drawings, concealed works, equipment installation, commissioning, and testing and handover. For a 500㎡ villa the reference durations are 1–2 weeks, 1 week, 2–3 weeks, 6–10 weeks, 3–4 weeks, 2–3 weeks, and 2–4 weeks — roughly 6–9 months in total.
The table below sets out the full process. Durations are referenced to a 500㎡ villa and shift with house type and system selection.
| Stage | Scope | Reference Duration | Deliverables | Your Involvement |
|---|---|---|---|---|
| 1 Needs Assessment and Survey | Site measurement, condition assessment, needs confirmed | 1–2 weeks | Feasibility judgement, needs list | Share floor plans, confirm how you will use the home |
| 2 Target Setting | Set target values and test methods for the six metrics | 1 week | Signed target sheet | Confirm the targets, understand the trade-offs |
| 3 Single-Source Drawings | Water, power, HVAC, smart control, and network on one drawing set | 2–3 weeks | Construction, MEP, and device layout drawings | Join the drawing review |
| 4 Concealed Works | Wall framing, pipework, cabling, embedded conduits | 6–10 weeks | Concealed-works records, photo archive | Sign off at each checkpoint |
| 5 Equipment Installation | Units, terminals, and control devices installed | 3–4 weeks | Equipment list and compliance certificates | Confirm equipment models |
| 6 Commissioning | Airflow balance, hydraulic balance, control logic | 2–3 weeks | Commissioning report | Join the walkthrough |
| 7 Testing and Handover | CMA re-testing, metric verification, document handover | 2–4 weeks | Test report, operations manual | Receive the documents, confirm handover |
Durations in the table are reference ranges for a 500㎡ villa and exclude lead times for owner-supplied materials and furniture. The actual schedule is confirmed at the design stage.
Because there is only so much room in the ceiling void. Eight systems — fresh-air ducts, air-conditioning ducts, water pipes, refrigerant lines, drainage, power cable trays, low-voltage cabling, and fire sprinklers — have to fit within 250–320mm of depth and still leave space for servicing. Drawn separately, each looks reasonable; laid over one another, they inevitably clash, and the clash is resolved by shrinking duct diameters, which costs airflow and adds noise.
Because there is only so much room in the ceiling void.
Fresh-air ducts, air-conditioning ducts, water pipes, refrigerant lines, drainage, power cable trays, low-voltage cabling, fire sprinklers — eight systems have to fit within 250–320mm of depth, with room left for servicing and pipe falls. Drawn separately, every drawing looks reasonable; laid over one another, they always clash.
What happens on site is that whoever arrives first takes the space. Whatever comes later is rerouted, fitted with extra bends, or forced into a smaller diameter. Smaller ducts mean less airflow and more noise, and the final metrics are not met.
Embedded conduits in the thermal-storage wallThe same logic applies: every run has to be laid out on one drawing before the conduits can be embedded correctly in a single pass.
Three things: sequence, inspection, and records. Sequence means wall framing and embedded conduits first, then ducts and water pipes, then electrical and smart-control cabling. Inspection means no checkpoint is closed without a signature: ducts are leak-tested, pipes are pressure-tested, walls are checked for plumb. The third is records: photographing each run before it is closed up, with its route and depth marked — so that years later, when someone drills into the wall to hang a picture, they do not hit a water pipe.
Three things: sequence, inspection, and records.
sequence: wall framing and embedded conduits first, then ducts and water pipes, then electrical and smart-control cabling. Get the order wrong and the work has to be redone.
Inspection: every concealed checkpoint must be inspected and signed off before it is closed. Ducts get a light or air leak test, pipes a pressure test, walls a check for plumb and flatness.
Records: photograph everything before it is closed up and mark the route and depth of each run. This archive is worth a great deal at maintenance time — years later, when you drill into a wall to hang a picture, the drawings are what keep you from hitting a water pipe.
Commissioning is the stage most easily compressed and the one that most affects how the house feels. Airflow balance means each room's actual supply air is close to design, usually within ±10%; hydraulic balance means each circuit reaches its design flow; control-logic testing confirms that automatic switching between operating conditions behaves as intended. All three must be recorded. “About right” is not a result.
Commissioning is the stage most easily compressed in the whole process, and the one that most shapes the finished experience.
Airflow balance means each room's actual supply air is close to design, usually within ±10%. Hydraulic balance means each circuit reaches its design flow. Control-logic testing verifies that automatic switching between operating conditions behaves as intended. All three must be recorded — “looks about right” is not acceptable.
The re-test happens after commissioning, once the interior is in a state that can be tested. Formaldehyde testing requires windows closed for 1 hour, the laboratory must hold CMA accreditation, and sampling points are set by floor area and room count. One caveat: if owner-supplied furniture and soft furnishings are not yet in place, a pass does not mean the metrics will still hold once the home is fully occupied. We recommend a further re-test after the main furniture arrives.
The re-test takes place after commissioning, once the interior is in a state that can be tested. Formaldehyde testing requires doors and windows closed for 1 hour, the testing body must hold CMA accreditation, and sampling points are set by floor area and number of rooms.
One caveat: if owner-supplied furniture and soft furnishings are not yet in place, passing does not mean the metrics will still hold once the home is fully occupied. The safer course is a further re-test after the main furniture arrives.Contract & WarrantyOne page on how test results are handled
Handover includes three documents: the test report, the system drawings (with photographic records of concealed works), and an operations manual. The manual lists every filter with its replacement interval, how to handle common alarms, and the items that need periodic inspection. During the warranty period we respond as the contract specifies.
Handover includes three documents: the test report, the system drawings (with photographic records of concealed works), and an operations manual. The manual lists every filter with its replacement interval, how to handle common alarms, and what needs periodic inspection.
During the warranty period we respond as the contract specifies.Warranty Coverage and Response TimesThe next page covers this in full.
You are needed at the key points: the survey, the drawing review, concealed-works inspections (which can be split across visits), the commissioning walkthrough, and handover. Everything else can be handled remotely; we send photographs of each checkpoint and a progress note.
Yes, provided the contractor builds to the drawings and the specified sequence, and we take part in concealed-works inspections. In that case the metrics we commit to apply to a narrower scope.
Curing time for concealed works and commissioning cannot be compressed. What can be compressed is the time spent on design discussions and waiting for equipment. Cutting concealed works short is the main source of later problems.
Changes cost least during design; once concealed works begin, a change means demolition and rework. That is why we confirm and reconfirm at the drawing stage, absorbing change before work starts on site.
We find the cause first. If it falls within our scope, we rectify it and re-test at our own cost. The contract and warranty set out the exact terms.
To find out whether your house is a fit and how a scheme would work, call us or add us on WeChat. We answer one to one.