Mariia Khilko
Lead Interior Designer & Project Director
Designing interiors since 2018. She leads the design and procurement, is the person you speak to, and makes sure what gets built matches the drawings.
QS DESIGN · QS BUD — Interior design and build · Warsaw
We don't dictate the scope. We stand behind the result.
We design and deliver turnkey fit-outs for houses, apartments and commercial spaces in and around Warsaw. Commission the design, the build, or both.
What you can hold us to
- 01
An estimate before we start
Scope and cost are in the contract before any work begins.
- 02
Dates in the contract
The start date, the duration and our liability for delay.
- 03
Extra work in writing
First a price and your approval, then the work.
- 04
A report every week
Photos, video and a short note on what was done and what comes next.
- 05
A warranty
Two years on full fit-outs, on the terms set out in the contract.
- 06
A live site to visit
Before you sign, we show you one of our projects in progress.
About
Two named people are behind every decision.
From the first meeting to handover, you deal with them directly.
- 26 years
- in construction
- 100+
- completed projects
- 3,000+ m²
- delivered
- 50 km
- around Warsaw
Founders
Oleksandr Khilko
Construction & Technical Director
In construction since 2000, with a university degree in the field. He is responsible for the technical decisions and for organising and carrying out the works.
Who it is for
Who we work with most often
Two situations where a single contractor from start to finish matters most.
You live in Warsaw and want one contractor for everything
A renovation or a house fit-out means dozens of decisions and a dozen trades. You sign one contract, with us. Crews, suppliers, sequencing and dates are our job.
- One person to talk to throughout
- Site meetings on agreed dates
- Your part: the budget, the choice of materials, decisions on changes
You're abroad and the property is in Warsaw
We run the build without you on site. That is how we fitted out an apartment for clients who live in France.
- A weekly report with photos and video
- Materials chosen remotely, from samples and photos
- Changes approved in writing, by message
The contract
Who signs the contract, and who is responsible
Warsaw firms work in one of three ways.
A design studio that coordinates crews
One design, but a separate contract with each crew. Each contractor is responsible only for its own deadlines and quality.
A fit-out company with packages
One contract and a fixed price per square metre, usually with a catalogue design. It works as long as your interior fits the package.
QS: one contract, one contractor
We are the contractor. The building works and the joinery, doors, stairs and ceilings from specialist firms are all in one contract with QS. One company is responsible for the schedule, the estimate and the quality.
Design and build
A design that can be built. A build that follows the design.
Two parts of one company.
QS DESIGN: design
We design to fit your budget.
- 01Concept and layout
- 02Working drawings with details
- 03Materials, lighting and fittings
- 04Procurement and design supervision
QS BUD: build
We build to our own design or to another studio's.
- 01Apartments, houses and commercial spaces, turnkey
- 02Licensed work done by certified specialists we coordinate
- 03From the building works to furniture and the final interior details
How we work
From the first conversation to the warranty
- 01
Conversation and site visit
We meet online, at your property, in the showroom or on one of our live sites. The consultation, the visit and the estimate are free.
Your partTelling us what you need and your budget
- 02
Design
We design the interior, or check the design you bring: whether it can be built and what it will cost.
Your partChoosing between prepared options
- 03
Estimate and contract
Scope, cost, dates and the rules for changes go into the contract.
Your partApproving the estimate, signing the contract
- 04
Build
A dedicated project lead from our team runs the site. You get a report every week, and any change of scope is priced first.
Your partReading the reports, deciding on changes
- 05
Procurement
We order materials and fittings and time the deliveries to the build schedule.
Your partChoosing materials and fittings
- 06
Handover and warranty
We inspect the finished work with you. We put right any defects that are our fault at our own cost.
Your partChecking the work, listing any snags
Trades and suppliers
We don't build with our own crew alone.
For each project we bring in proven specialists and take responsibility for how their work fits together.
We have done dozens of projects with many of them. We involve them during preparation rather than at the end: we pass on dimensions, agree the details and junctions, and get the site ready for installation. Joinery, doors and stairs are then made in parallel with the building works, and you don't have to coordinate a dozen contractors.
- Bespoke joinery
- kitchens, wardrobes, built-in storage
- Stairs and carpentry
- timber stairs, made-to-measure woodwork
- Doors and windows
- internal and entrance doors, window systems
- Metal, glass and mirrors
- steel-framed partitions, metalwork, mirror walls, glass screens
- Ceilings and details
- stretch ceilings, shadow gaps, concealed junctions
- Floors and wall finishes
- parquet and engineered boards, vinyl flooring, tiles and large-format porcelain, decorative coatings
- Stone, sanitaryware, lighting
- stone and quartz worktops, taps and sanitaryware, lighting and switches
Materials
We choose a material together with the way it is installed.
We don't cut corners on the layers nobody sees after handover. Durability depends on them. We are not tied to one brand: what we choose depends on the job, the property, the design and the budget.
Visible
- Veneers and veneered panels
- Stone and quartz composite
- Tiles and large-format porcelain
- Doors and flooring
- Paints and decorative plasters
- Lighting
- Sanitaryware
Hidden
- Waterproofing
- Priming and substrate preparation
- Adhesives, mortars and drylining systems
- Wiring and separate circuits for high-power appliances
- Acoustic insulation
Projects
Selected projects
For each one we show what you can see and what stayed inside the walls.
House in Słupno
Słupno, near Warsaw · house 160 m² · design + build + procurement · 2025 · 7 months
The loft converted into living space, a fixed staircase in place of the loft ladder, concealed-frame doors and flush skirting.
- Visible
- Stairs with lit treads, mirror walls, large-format tiles in the bathrooms, several lighting scenes. Outside: parking spaces, terraces and canopies.
- Hidden
- Services and connection points relocated and reinstalled: power, water and drainage, heating, ventilation, air conditioning and low-voltage systems. We did not make the furniture, but we agreed dimensions, junctions and connections with the joiners before the walls were closed.
- Result
- Handed over in October 2025, after seven months of work.
Prefab house in Niwy Ostrołęckie
Niwy Ostrołęckie, about 50 km from Warsaw · house · build · 2025 · 2 months
A rental house that arrived with wiring and plasterboard in place. Part of it had to be corrected.
- Visible
- A mezzanine with a steel-mesh balustrade, stairs, gable glazing about 6 m high, tiling and second fix.
- Hidden
- Defects in the earlier construction put right, plasterboard and wiring redone, surfaces reinstated and finished at heights of up to 6 m.
- Result
- Handed over in two months, on the date set in the contract.
Imaguru Startup Hub
Warsaw · commercial space · build
Everything from strip-out to the finished space. There were no working drawings: we built from the client's sketches and brief.
- Visible
- A bar with a stone front, a raised platform, a photo wall, murals in the meeting rooms, made-to-measure fittings.
- Hidden
- Many of the details were decided on site, together with the client.
Reviews
What clients say
A one-room flat became a modern studio. Everything was done on time, on budget and to the highest standard.
Paweł D.
design, furniture and build
The work was done quickly, every request was taken into account, and the cost matched the approved estimate.
Darek J.
bathroom renovation
They helped with the design and with buying the materials. They did all of it while I was away on holiday.
Dmitri S.
bathroom rebuild
Excerpts from the QS BUD Warszawa profile on Google, translated from Polish.
Principles
What we don't do
- 01
We don't promise deadlines or prices that can't be kept.
- 02
We don't pad the estimate with work nobody needs.
- 03
We don't take on work that needs a licence we don't hold. We bring in a licensed specialist and tell you before you sign.
- 04
We don't turn the owner into the site manager.
Questions
The questions we hear most often
Yes. Before pricing, we check that the design can be built and tell you what needs clarifying.
Nothing. Consultations, meetings, site visits and the estimate are free. If the scope and the estimate suit you, we sign a contract.
The contract states the planned start date and the duration. The clock starts on the day the property is ready for work and the utilities are connected. The contract makes us liable for missing the deadline.
Two years on full construction and fit-out works, one year on minor repairs. It does not cover the consequences of work done at your request against our advice. It does not affect your statutory rights.
Both. In resale apartments some problems only show after the strip-out. We then update the estimate in writing before going further.
Yes. We can carry out a professional snagging inspection of the apartment to assess its condition and record the defects. If we then do the fit-out, the inspection is free.
Blog
Why we do it this way
On design and construction decisions.
Process
What to decide before a renovation starts, so nothing gets redone
Most rework during a renovation comes from decisions put off until later. The list of what we settle with the client before the first wall is opened, in the order the build needs it.
Build
Renovating a resale apartment in Warsaw: what the strip-out reveals
An estimate for a resale apartment has one unknown: what sits under the tiles and plaster. The things a strip-out reveals most often, and how we price them.
Contact
Let's start with a conversation
We reply within 24 hours on working days. We work in Warsaw and within 50 km of the city.