The brief
The client runs a consulting practice from home and is on video for four to six hours a day. The spare bedroom had the best view in the flat and was unusable as an office for exactly that reason: a full-height east-facing window that turned the room into a lightbox between 7am and 10.30am, and bare plaster on five surfaces that made every call sound like it was recorded in a stairwell.
The instruction was specific and unusually well-observed: keep the view, fix the glare, fix the echo, and do not build anything that puts a bookcase between the desk and the window.
- 148 sq ft carpet, 10 ft 6 in × 14 ft 1 in, with a 3.4 m full-height east-facing window.
- Twenty-eighth floor — no external shading device permitted by the building's façade policy.
- Bare plaster on four walls and the ceiling; a measured reverberation time of about 0.9 seconds.
- A single 6 A socket and no data point in the entire room.
- The family was living in the flat throughout. Society hours 10am–6pm, no Sundays.
The constraints
| Constraint | What it ruled out | What we did instead |
|---|---|---|
| Façade policy — no external shading | Louvres, awnings or any external device | Internal double-layer system: a solar-screen roller at 5% openness behind a dim-out roller |
| Full-height glazing on the long wall | Any tall storage on the best wall | Storage capped at 1.1 m on the window side; tall units confined to the internal wall |
| 0.9 s reverberation time | A hard-surfaced, minimal scheme | Fabric-wrapped acoustic panels on two walls, carpet, and a fabric-fronted storage face |
| Occupied flat, 10am–6pm | Noisy work concentrated into a short burst | All chasing and drilling completed in the first four working days, then quiet trades only |
| Single 6 A socket, no data | Running everything off extension leads | New 16 A radial, six 6 A points, two data points and a UPS spur, all chased in week one |
What we did
- Turn the desk 90 degrees to the glassThe obvious move is to face the view. It is also the move that puts a blown-out window directly behind you on every call. The desk runs perpendicular to the glazing, so daylight arrives across the face from the left and the window stays fully visible from the chair.
- Two blinds, not oneA 5% openness solar screen kills the glare and the heat while keeping the skyline readable through it. A separate dim-out roller on the same headbox handles the 7am to 9am period and the occasional afternoon presentation. Both on a single motorised track with a wall keypad.
- Treat the first reflection pointsFabric-wrapped 50 mm acoustic panels on the wall behind the desk and the wall opposite, positioned where a reflection from the client's own voice arrives back at the microphone first. Wool-blend carpet over underlay on the floor. Measured reverberation time after: 0.45 seconds.
- Keep the storage low on the view sideA 1.1 m high run of deep drawers under the window wall — files, printer, shredder, cables — with a solid surface top that doubles as a layout bench. Nothing taller than the sill line on that side.
- Put the tall storage on the internal wallA 2.4 m full-height unit with a fabric-fronted upper section, which doubles as an acoustic absorber, and closed lower storage. The fabric front was chosen for its absorption coefficient first and its colour second.
- Fix the electrics properlyA dedicated 16 A radial, six twin 6 A points, two Cat 6 data points, a UPS spur and a floor box under the desk. All of it chased in during the first week, before anything was covered.
Daylight from the side, not from behind
The desk runs perpendicular to the glazing so daylight crosses the face rather than backlighting it. The 5% openness solar screen keeps the skyline legible while removing the glare and a useful share of the solar gain.
Storage on the window side stops at 1.1 m — the sill line — so the view is never interrupted from a seated position.
Materials and specification
| Element | Specification | Reasoning |
|---|---|---|
| Solar screen blind | 5% openness fabric, motorised roller, charcoal | Cuts glare and solar gain while keeping the view readable; charcoal has the lowest veiling reflection of the available shades |
| Dim-out blind | Second roller on the same headbox, light-grey backing | Full blackout is rarely wanted; dim-out handles early morning and presentations |
| Acoustic panels | 50 mm mineral-wool core, fabric-wrapped, 1,200 × 600 mm, six panels | 50 mm is the minimum depth that does useful work below 500 Hz, which is where the human voice lives |
| Desk | 2.0 m × 0.75 m, 25 mm compact laminate on a powder-coated steel frame | Compact laminate takes daily wear and does not telegraph the frame the way a thin MDF top does |
| Low storage run | BWP carcass, matte laminate drawer fronts, solid-surface top at 1,100 mm | Below sill height so nothing interrupts the view from a seated position |
| Tall unit | BWP carcass, fabric-fronted upper doors over an acoustically transparent frame | Doubles as absorption; the fabric was selected for absorption coefficient before colour |
| Flooring | Wool-blend carpet over 8 mm underlay | Carpet is the single most cost-effective acoustic treatment in a small room |
| Lighting | 3500 K linear over the desk, 3000 K perimeter cove, no downlight in the camera field | A downlight in front of the camera puts a hotspot on the forehead on every call |
| Power and data | Dedicated 16 A radial, six twin 6 A, two Cat 6, UPS spur, floor box | A home office running on extension leads is a fire risk and an untidy call background |
Programme
| Stage | Duration | What happened |
|---|---|---|
| Design, acoustics, 3D | Weeks 1–2 | Reverberation measured, panel positions modelled, two rounds of 3D, blind fabric samples tested against the actual east light |
| Noisy works | Week 3, days 1–4 | All chasing, drilling and fixing completed in four consecutive working days so the family had one disrupted week, not seven |
| First fix and plaster making good | Week 3, day 5 – week 4 | Electrical and data first fix, then making good |
| Joinery and carpet | Weeks 5–6 | Low run and tall unit installed, carpet laid, blinds and headbox fitted |
| Acoustic panels and commissioning | Week 7 | Panels positioned and fixed after a second reverberation measurement, lighting scenes set, snag closed |
The outcome
Measured reverberation time fell from approximately 0.9 seconds to 0.45 — the range where speech stops smearing and a microphone stops picking up the room. Glare complaints stopped entirely. The view survived, which was the point of the whole exercise.
Final account: ₹5.2 lakh ex-GST against a ₹5.05 lakh BOQ, a 3% variation for an additional pair of acoustic panels added after the post-installation measurement showed the rear wall still live.
The first call I took in there, two people asked what had changed. Neither of them could see the room — they could just hear that it was different.
Homeowner, home office project
What we would highlight
- Never sit with the window behind you. It is the most common and most fixable mistake in a home office, and it costs nothing to get right at layout stage.
- Two blinds beat one. A single blackout roller means choosing between a view and a usable screen. A solar screen plus a dim-out gives you both for roughly 40% more than one blind.
- Measure the reverberation before and after. Acoustic work that is not measured is decoration. Two measurements cost an hour and turn an opinion into a number.
- Batch the noisy work. In an occupied flat, four consecutive days of drilling is tolerable. Four weeks of intermittent drilling is not.
- Storage height is a view decision. Capping the window-side run at sill height cost about 14 cubic feet of storage and preserved the reason the room was chosen.
Residential work by Greenbox Design Studio. Tap any image to enlarge.
Frequently asked questions
How do you stop glare in a home office with a big window?+
Turn the desk perpendicular to the glazing so daylight crosses your face rather than backlighting it, then use a two-blind system: a 5% openness solar screen for daytime glare and heat, and a separate dim-out roller for early morning and presentations. External shading is better still, but most towers will not permit it.
What makes a room sound bad on video calls?+
Reverberation. Bare plaster, hard flooring and glass reflect your own voice back into the microphone milliseconds after it is spoken, which smears consonants. This room measured 0.9 seconds before treatment; 50 mm fabric-wrapped panels at the first reflection points plus carpet brought it to 0.45 seconds.
What did this home office cost?+
₹5.2 lakh excluding 18% GST for 148 sq ft — roughly ₹3,510 per sq ft of room area. Motorised twin blinds, acoustic treatment and a full electrical rewire of the room account for a large share of that; a plain study without those would be considerably less.
Can you build a home office while the family lives in the flat?+
Yes, by batching the noisy scope. On this project all chasing, drilling and fixing was completed in four consecutive working days in week three. After that only quiet trades were on site. One disrupted week is manageable; seven intermittent ones are not.
How much power and data does a home office need?+
More than a spare bedroom has. We specified a dedicated 16 A radial, six twin 6 A points, two Cat 6 data points, a UPS spur and a floor box under the desk. The room started with one 6 A socket and no data point, which is typical and is why so many home offices run on extension leads.