Perched high above Mumbai, this 2,000 sq. ft. duplex marks a thoughtful departure from the dramatic expression of HNine Designs‘ earlier celebrated project, The Hidden Chambers. While the brief embraced a more modern urban lifestyle with vibrant undertones, one design principle remained close to the studio’s heart: the art of concealment.
Designed by Neha Mudaliar of HNine Designs, which is co-founded with Ar. Harshad Mewada, this home reveals its character gradually, room by room, surprise by surprise. It’s a residence that rewards a second look and a third, and it’s exactly the kind of project that has helped position HNine Designs among the top interior design firms in Mumbai today. Every decision in this home, from the placement of a single door to the curve of a staircase, carries the signature thoughtfulness that Neha Mudaliar and her Mumbai-based studio are known for.
A Home of Quiet Discovery
Throughout the home, a series of intentionally camouflaged doors has been seamlessly woven into the design language, creating moments of discovery that echo the essence of the studio’s most loved earlier work. Hidden in plain sight, these elements add a layer of intrigue while maintaining the clean, contemporary character of the residence.
It is this quiet sense of discovery, doors and details that reveal themselves only when you’re paying attention, that inspired the project’s name: The Dumbledoor Effect. For Neha Mudaliar, concealment was never about hiding things away for the sake of it. It was about designing a Mumbai home that slowly unfolds itself to the people living in it, day after day, year after year.
Designed for Three Generations, One Roof
This duplex was created for a multi-generational family, and every room reflects that reality. Rather than applying one uniform palette across the home, each space was infused with carefully selected accents of colour, tailored to the personality, age, and lifestyle of its occupant.
The result is a home that feels cohesive as a whole yet deeply personal in every corner, a balance that is far harder to achieve than it sounds, and one that speaks to the human-first thinking behind HNine Designs’ process. This is, in many ways, what sets Neha Mudaliar apart as a designer working in Mumbai’s competitive luxury residential space: the ability to design for an entire family without flattening anyone’s individual identity into a single, generic look.
The Spherical Lift: From Hidden Feature to Design Statement
One of the most significant challenges of the project was incorporating an elevator within the existing duplex layout. Every inch was meticulously planned, calculated, and optimized by the HNine Designs team before a spherical lift could be introduced into the space.
What began as an attempt to let the lift disappear into the background eventually evolved into something else entirely. The spherical lift became a design statement in its own right, thoughtfully integrated into the overall composition of the home rather than tucked away from it. It’s a detail that visitors to this Mumbai residence still talk about, and one that reflects how Neha Mudaliar approaches even the most technical constraints as design opportunities rather than obstacles.
Smart Staircase, Smarter Square Footage
The staircase was designed with efficiency front and centre, occupying only the space truly required for circulation and freeing up valuable square footage to be put to better use elsewhere in the home. In a city like Mumbai, where every square foot carries real weight, this kind of precision planning is exactly why HNine Designs continues to be regarded as one of the top interior design studios working on luxury residential projects today.
This strategic planning led to one of the project’s most rewarding breakthroughs: a multifunctional room on the upper level. What was once merely a passage connecting two bedrooms was transformed by extending walls from both ends, creating a charming personal retreat for the family’s daughter.
Bedrooms Built on Elegance and Opulence
The bedrooms in this duplex were designed to embody a refined sense of elegance. Rich marble surfaces interact harmoniously with sculpted Corian elements, featuring intricate engravings that elevate the material palette without ever overwhelming the spaces.
Texture, craftsmanship, and subtle detailing come together to create rooms that feel luxurious yet timeless, spaces that will age gracefully rather than simply trend well. It’s this restraint, knowing exactly when to stop, that distinguishes HNine Designs’ material language from louder, trend-driven interiors elsewhere in Mumbai.
Storage That Hides in Plain Sight
Beyond aesthetics, this project stands as a testament to HNine Designs’ ability to uncover opportunities within overlooked spaces. Smart storage solutions emerge from what would otherwise be dead corners, whether within the entrance shoe unit concealed behind the door, along the upper-floor passage, or throughout the bedrooms.
In the master suite, an innovative spatial intervention transformed a portion of the room into an additional balcony area through the careful introduction of a partition, enhancing both functionality and the lived experience of the space. These are the kinds of solutions that often go unnoticed in a finished home, yet they form the quiet backbone of how Neha Mudaliar and her team plan every Mumbai residence from the ground up.
Magic, Revealed Gradually
A home filled with hidden moments, thoughtful transformations, and understated surprises, The Dumbledoor Effect reveals its magic gradually rather than all at once. It doesn’t announce itself; it unfolds.
This is design that trusts the people living in it to notice, to explore, and to keep discovering their own home long after they’ve moved in. For Neha Mudaliar, that is the real measure of a successful project, not how a home photographs on day one, but how it continues to surprise and serve its family for years afterward. It is precisely this philosophy that continues to earn HNine Designs recognition as one of the top interior design studios in Mumbai, trusted with some of the city’s most personal and ambitious residential projects.
Project Fact File:
- Name of the project – The Dumbledoor Effect
- Location – Mumbai
- Total Area – 2,000 sq.ft
- Type – Duplex Residential, Multi-Generational Family Home
- Design firm – HNine Designs
- Lead Designer – Neha Mudaliar
- Photography Credits – @archceptionsbynisheetdodia
