Apartment Collection

Penthouse & duplex design & build

Penthouses and duplexes sit at the premium end — large volumes, double-height spaces and curated materials that demand refined craftsmanship and tight technical control. AIC delivers design and build through a single point of contact.

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What makes it different

Penthouse & duplex design & build — get it right from design

Penthouses and duplex apartments have their own character: large areas often spanning two levels, internal stairs, generous terraces or balconies, and premium finish expectations. In this segment, finishing detail, furniture proportion and the hidden technical layer — waterproofing, MEP, lighting — are what define the calibre of the space.

Done right

The items that decide quality

Double-height voids & internal stairs

The internal staircase is the architectural centrepiece: structure, treads, balustrades and stairwell lighting engineered to be both safe and beautiful — the signature element of a duplex.

Premium finish materials

Natural stone, solid timber, plated metals and specialist paint effects demand high craftsmanship and precision on site — finishing detail is what makes a space feel truly luxurious.

Proportion for large volumes

High ceilings and big floor plates feel empty without proportion. Furniture scale, layering and focal points are chosen so the space feels warm and balanced rather than diluted.

Terraces & large balconies

Outdoor zones need thorough waterproofing, weather-resistant materials, landscaping and lighting — turning the terrace into a true retreat while preventing leaks and damp later.

Layered lighting & smart home

Layered lighting (ambient, accent, cove) plus smart control of curtains, lights and air-conditioning — lifting the daily experience to premium-apartment standard.

Central AC & large-scale MEP

Load calculations and central or concealed-duct air-conditioning across multiple zones, with coordinated power, plumbing and ventilation — the technical base for a large space that runs quietly and stably.

Reference spaces

Design directions

Selected projects

Residential spaces by AIC

View all

Căn hộ · Hà Đô Centrosa

Căn hộ Iris 2 Hà Đô Centrosa — Chị Phương

85 m²

Căn hộ · Hà Đô Centrosa

Căn hộ Hà Đô Centrosa — Chị Hà

101 m²

Premium Apartment · Hà Đô Centrosa

Hà Đô Centrosa Apartment — Interior

Căn hộ · Hà Đô Centrosa

Căn hộ Iris 4 Hà Đô Centrosa — Chị Phương

Villa Show Home · Đồng Nai

Swanbay Đại Phước Show Home — Fit-out

Căn hộ · The Beverly

Căn hộ The Beverly

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Frequently asked questions

Penthouse & duplex design & build

How is building a penthouse or duplex different from a standard apartment?

Mostly in scale and finishing difficulty: double-height voids and internal stairs, premium materials that demand real craftsmanship, terrace waterproofing, and MEP and air-conditioning for large areas. These packages need an experienced crew and tight quality control.

How much does a penthouse or duplex fit-out cost?

Cost depends on area, the finish-material level, the stair and terrace packages and the technical systems. AIC takes off quantities and prepares a detailed BOQ in about 4 hours from the floor plan, so you have realistic numbers before committing.

Does AIC handle stairs, terraces and MEP as well?

Yes. AIC delivers through one point of contact: design, premium interiors, stairs, terrace waterproofing, electrical, plumbing and air-conditioning — controlling schedule and quality on a single dossier. Works carry a warranty up to 24 months.

Start with a detailed BOQ.

Send us your floor plan — AIC prepares a detailed BOQ in about 4 working hours, with locked pricing and handover milestones in the contract.

Get a quote +84 906 330 288