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From 4.5M to 6M CZK: The 357% ROI Renovation

How a 420,000 CZK technical investment turned an inherited 1+1 into a modern high-yield rental asset — and unlocked 1.5M CZK in market value.

Case Study
February 2026
5 min read
Prague, Czech Republic

Type

1+1 · Brick Building · Personal Ownership

Size

33.65 m²

Value Before

4,500,000 CZK

Renovation Cost

420,000 CZK

Value After

6,000,000 CZK

Apartment floor plan — 1+1 · 33.65 m²

Floor plan · 1+1 · 33.65 m² — Room 22.03 m² · Kitchen 6.49 m² · Bathroom 3.49 m² · WC 1.64 m²

The Visual Story

8 Weeks. Every Stage Documented.

What follows is the complete visual record of this renovation — shared with the owner in real time via WhatsApp, archived in Google Drive. Technical decisions are woven into each chapter as they happened on site.

01

The Starting Point

Step through the door of an inherited Prague apartment in a brick building, and the challenge is immediate. Functional. Dated. A product of its era — period parquet under worn varnish, single-phase electrics, a heating system that never saw a single upgrade.

The kitchen completed the picture: original scullery layout, exposed pipe runs, a single 16A circuit shared across the entire flat. No capacity for induction, no provision for a dishwasher. At 4.5M CZK, the market valued it fairly for what it was. TUTEL's brief was to change what it was.

The Starting Point
Original condition — dated living space, period parquet under worn varnish, and a kitchen incompatible with modern rental standards.
02

The Clean Slate

Selective demolition is a discipline, not a blunt instrument. All non-load-bearing elements were methodically removed. Structural walls stayed untouched. Every decision was documented — every deviation from the original plan photographed, recorded, and approved by the owner the same day via WhatsApp.

The apartment needed to go backwards before it could go forwards.

The Clean Slate
After demolition: walls opened for new service routes, non-structural partitions removed. Structure verified and intact.
03

Operational Excellence

How a site is organised before the first tool is raised determines how it runs for the next 13 weeks. TUTEL-managed sites follow a defined protocol: materials staged in sequence, floors and surfaces protected, access routes agreed with building management.

An organised site reduces the probability of damage, theft, and schedule slippage. The owner's Google Drive and WhatsApp received site photos every working day.

Operational Excellence
Site preparation and groundwork following defined technical procedures.
04

Modern Infrastructure

Forty-year-old aluminium wiring, a single circuit, no RCD protection. Before a single contractor touched a wall, TUTEL's technical audit had already identified it: this apartment carried active fire and shock risk. The recommendation was unambiguous — full rewire, no exceptions.

New conduit routes were chased precisely per the finalised circuit plan.

Modern Infrastructure
New conduit routes chased into walls — kitchen 32A, bathroom 16A, three lighting rings, general sockets. Positioned per final circuit plan.
05

The Nerve Centre

The new consumer unit represents something the original apartment never had: zone-level protection. Dedicated MCB and RCD per circuit. Every milestone inspected, photographed, and signed off.

Twelve new circuits, zero legacy risk. The electrical work alone eliminates a decade of maintenance risk.

The Nerve Centre
New MCB board with dedicated RCD protection per zone. Inspected and certified. The electrical backbone of the rebuilt apartment.
06

The Transition

Corridors and transit zones are where renovation quality is most exposed. There are no distractions here — no furniture, no view — only the quality of the surface itself.

Every wall was levelled to a uniform standard before any finish was applied. The principle is simple: get the base right and every subsequent layer performs as designed. Shortcut the base and every subsequent layer advertises it.

The Transition
Hallways and transition zones levelled and prepared to a uniform standard.
07

New Geometry

The decision to lower the ceiling was deliberate. Pre-positioned downlight apertures and a reduction in heated volume.

In Prague brick buildings, original high ceilings are often cited as a selling point. We made a calculated trade: slightly lower, dramatically better. The result: a flat with an even, functional ceiling and lower energy consumption.

New Geometry
New drywall ceiling with pre-positioned downlight apertures.
08

The Build-Up

Kitchen assembly in a rental renovation is a test of specification intelligence. The cabinet fronts were selected for durability; the green lacquer for visual longevity — a colour that reads as contemporary now and will continue to read as contemporary in years to come.

Custom-fitted to the precise ceiling height, this kitchen was not a showroom unit dropped in. It was designed for the space it occupies.

The Build-Up
Installation of the modern kitchen unit — custom-fitted to ceiling height, fronts selected for visual longevity across tenant cycles.
09

Reviving Heritage

The original parquet floor was not a problem to solve. It was an asset to activate. Sanded, gap-filled, and refinished to a high gloss, the reclaimed period flooring became one of the apartment's strongest commercial arguments.

Authentic Prague character, delivered to modern standard. Buyers and high-quality tenants pay a premium for this. It is not sentiment. It is documented strategy.

Reviving Heritage
Original Prague parquet sanded, gap-filled, and refinished to high gloss — authentic character preserved and upgraded to premium standard.
10

The Result: The Heart

The finished kitchen: integrated appliances, full-height cabinetry, worktop. Designed for a 15-year operational lifespan. Every joint, surface, and fitting selected with a single question in mind — will this still look good and perform reliably at year ten?

The answer — judge for yourself.

The Result: The Heart
The final kitchen. Integrated appliances, full-height storage, worktop. Rental-grade durability with show-home aesthetics.
11

The Result: The Life

The apartment that began at 4.5M CZK — dated, inherited, overlooked — now stands at 6M CZK. A 1,500,000 CZK capital gain from a 420,000 CZK renovation.

This is not renovation. This is asset management. And it is precisely what TUTEL was built to deliver.

The Result: The Life
The complete apartment. From inherited and overlooked to professionally optimised asset.

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The Numbers

Every Crown Accounted For

return on renovation capital

357%

Every 1 CZK invested returned 4.57 CZK in market value

Renovation Investment

420,000 CZK

Value Before

4,500,000 CZK

Value After

6,000,000 CZK

Capital Gain

+1,500,000 CZK

ROI calculated as capital gain (1,500,000 CZK) divided by renovation investment (420,000 CZK).

Adam Šaroch — Founder & Technical Director, TUTEL
T
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Adam Šaroch

Founder & Technical Director, TUTEL

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