Smartphone | Lukinski https://lukinski.com Sun, 02 Aug 2026 11:43:51 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.10 Real estate apps: recommendations for tenants, landlords & real estate investors https://lukinski.com/real-estate-apps-recommendations-for-tenants-landlords-real-estate-investors/ Fri, 03 Mar 2023 11:30:05 +0000 https://lukinski.de/real-estate-apps-recommendations-for-tenants-landlords-real-estate-investors/ Real Estate Apps – These apps are designed for everyone looking for housing, landlords, sellers, or real estate investors. They offer tools and calculators to calculate key real estate figures or to find the property of your dreams for your own use or as an investment. You will find an overview of all the apps with the corresponding download link in this list.

Real Estate Apps: Knowledge & News

The following apps keep you up to date on real estate matters. Apps for beginners and advanced users.

Real Estate Experience App

The Immobilien-Erfahrung.de app offers all real estate knowledge regarding investments, property management, valuation, as well as financing and management. Thanks to the practical calculators, you discover additional purchase costs and many other key figures. In the real estate wiki, you will find more than 1,000 technical terms explained simply.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

Download on Google Play Store & Apple App Store.

IZ – Real Estate Journal

With the real estate journal IZ, you are always up to date with the latest news from the German real estate sector. Learn everything about investment opportunities or investment objects in an app.

Is the app free?

  • Yes, the app is free
  • Subscription required

Download the app: iOS & Android

You will find the application here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Magazine House & Ground

The magazine “House & Ground” provides current information on real estate topics for tenants, landlords, and property owners. Political developments, new tax law or rental law issues, as well as management topics are dealt with, for example. Readers have the possibility to bookmark articles with simple bookmarks and later classify them by categories.

Is the application free?

  • Yes, the application is free

Download the application: iOS & Android

You will find the app here in the AppStore (iPhone) and the PlayStore for all Android smartphones.

Real estate apps: online tools and calculators

These tools allow you to quickly and easily calculate key practical figures related to real estate. From equity and yield to usable area and floor area – find out everything with these apps.

Lukinski Immo Tools

The Lukinski Immo Tools app offers more than 20 online tools on the topic of real estate. You can thus access a wide range of practical indicators that can help you make decisions or provide advanced knowledge. The app allows you to quickly and easily calculate savings plans for reserves, equity, and property yields.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the PlayStore for all Android smartphones.

Loué.fr

The real estate app Vermietet.de was specially designed for landlords and property managers. The app offers a simple, secure, and time-efficient way to organize all aspects of property management, regardless of the type of portfolio, whether it’s a condominium apartment or a multi-family building. Among the app’s features are legally secure expense calculations, secure rental contracts, property valuations, as well as officially controlled templates for reminder letters and rent increases.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app in the AppStore (iPhone) and the PlayStore for all Android smartphones.

Immocation.fr

The app of Immocation.de offers a simple and clear calculator that quickly and accurately informs you about the yield of a real estate property before buying or selling it. In addition, the app provides other tools that give you detailed information on the topic of real estate. Thanks to the user-friendly interface with simple sliders, using the app is not complicated.

Is the application free?

  • Yes, the application is free

Download the app: iOS & Android

You will find the app in the AppStore (iPhone) and the Playstore for all Android smartphones.

Deka Real Estate Funds

The Real Estate Funds Deka app provides you with complete information on all important details of Deka Group real estate funds. This app allows you to quickly and easily access information such as share prices, information on the properties, as well as in-depth information on purchases and sales. The app’s “push” functions keep you informed and up to date on the latest developments.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app in the AppStore (iPhone) and the PlayStore for all Android smartphones.

Real estate apps: buy, sell, rent & lease

With the help of the following apps, you will surely find the dream property. Whether it’s a property for ownership, an investment, or a vacation home, you will find what you’re looking for with this selection of apps.

Villa Lukinski

The Villa Lukinski app offers listings and an overview of vacation properties and investments in Germany, the Balearic Islands, and the United States. With just a simple download of the app, you can easily search for a property that matches your wishes.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Immoscout24

The Immoscout24 app allows you to find or offer real estate for sale, rent, sale, or lease. Thanks to the numerous filtering options, you can search specifically for the property you are looking for. The app also offers useful functions such as moving and financing planning to help you make a decision and realize your projects.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Immowelt

The Immowelt Real Estate app allows you to search for properties for rent or sale in Germany, Austria and Switzerland. You can easily find the property that matches your wishes using various filters such as cost, living space or number of rooms. In addition, the app offers practical functions such as a map view for searching or the possibility to request a credit check directly within the app.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Immonet Real Estate

The Immonet app helps you find the real estate that exactly matches your expectations. The interactive map functions allow you to precisely draw the search radius and use advanced GPS functions. Simplified search criteria such as “balcony” or “garage” allow you to easily filter matching real estate. In addition, the app offers integration with the Apple Watch.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Trovit Immo

Trovit Immo is a simple real estate app that allows you to quickly and easily find the right property for buying or renting. The search radius function can be adjusted individually, and extended search criteria allow you to effectively refine your search. Thanks to push notifications, you are always up to date with the latest information.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Von Poll Real Estate

The Von Poll Real Estate app allows you to easily discover a wide range of real estate properties. Thanks to the owner’s dashboard, you can sell or rent out your own property. In addition, the app offers a quick and easy online property valuation to determine the actual value of your property.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the Playstore for all Android smartphones.

Immosuchmaschine.de

The Immosuchmaschine.de app is a special app designed for real estate searches. It brings together the most well-known German real estate portals and allows you to search and compare simultaneously on multiple portals. Thanks to the search agent function, you can specify your search criteria and the search agent will notify you as soon as a matching property is found.

Is the app free?

  • Yes, the app is free

Download the app: iOS & Android

You will find the app here in the AppStore (iPhone) and the PlayStore for all Android smartphones.

]]> Apps Real Estate: Recommendations for Tenants, Landlords & Real Estate Investors https://lukinski.com/apps-real-estate-recommendations-tenants-landlords-real-estate-investors/ Fri, 03 Mar 2023 11:30:05 +0000 https://lukinski.de/apps-real-estate-recommendations-for-tenants-landlords-real-estate-investors-2/ Real Estate Apps – These apps are for all renters, landlords, sellers, or real estate investors. They offer tools and calculators to calculate real estate key figures or help you find your dream property for personal use or as an investment. All apps in an overview with respective download links can be found in this list.

Real Estate Apps: Knowledge & News

With the following apps, you will always be up to date when it comes to real estate. Apps for beginners and for advanced users.

Real Estate Experience App

The Immobilien-Erfahrung.de app offers you all the real estate knowledge around investments, property management, value enhancement, as well as financing and management. With the practical calculators you can find out purchase ancillary costs and many other key figures. In the real estate wiki you will find over 1,000 technical terms explained simply.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Download in the Google Play Store & Apple App Store.

IZ – Real Estate Newspaper

With the IZ Immobilienzeitung, you will always be up to date with news from the German real estate industry. Find out everything about investment opportunities or investment properties in an app.

Is the app free?

  • Yes, the app is free
  • Subscription required

App Download: iOS & Android

Find the app here in the App Store (iPhone) and Play Store for all Android smartphones.

House & Ground Magazine

The magazine “House & Ground” provides up-to-date information on topics in the real estate industry for tenants, landlords, and property owners. For example, political developments, tax and rental law updates, as well as administrative issues are covered. Readers have the opportunity to mark articles with simple bookmarks and categorize them later.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

You can find the app in the AppStore (iPhone) and PlayStore for all Android smartphones.

Real Estate Apps: Online Tools and Calculators

With these tools, you can quickly and easily calculate practical figures related to real estate. From equity and return, to usable and floor area – learn everything with these apps.

Real Estate Guru (my app): Learning App & Calculator

The Real Estate Guru App offers you more than 20 online tools related to real estate. You can access a wide range of practical figures that can serve as decision-making support or advanced knowledge. The app allows you to quickly and easily calculate savings plans for reserves, equity, and return on real estate.

Is the app free?

App Download: iOS & Android

Here you can download the app in the AppStore (iPhone) and Playstore for all Android smartphones.

Vermietet.de

The Real Estate app Vermietet.de has been specifically developed for landlords and property managers. The app offers a simple, secure and time-efficient way to organize all aspects of property management, regardless of the type of portfolio – whether it is a condominium or an apartment building. Features of the app include legally secure additional costs calculations, secure rental agreements, property valuation as well as officially verified templates for reminders and rent increases.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Here you can find the App in the AppStore (iPhone) and Playstore for all Android smartphones.

Immocation.de

The App from Immocation.de offers a simple and clear calculator that quickly and precisely provides information about the return before buying or selling a property. In addition, the App offers further tools that provide detailed information on the topic of Real Estate. Thanks to the user-friendly interface with simple sliders, using the App is uncomplicated.

Is the App free?

  • Yes, the App is free

App Download: iOS & Android

Here you can find the App in the AppStore (iPhone) and Playstore for all Android smartphones.

Deka Real Estate Funds

The Deka Real Estate Funds app provides you with comprehensive information about all important details of the real estate funds of the Deka Group. With this app, you can quickly and easily access information such as the share price, property details, and background information on purchases and sales. Thanks to the app’s push notifications, you will always be up to date and can inform yourself about current developments.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Here you can find the app in the AppStore (iPhone) and PlayStore for all Android smartphones.

Real Estate Apps: Buy, Sell, Rent & Let

With the help of the following apps, you are sure to find your dream property. Whether it’s a family home, an investment or a holiday property – with this selection of apps, you will find exactly what you’re looking for.

Lukinski Villa

The Lukinski Villa app provides you with offers and an overview of holiday properties and investments in Germany, the Balearic Islands and the United States. By simply downloading the app, you can easily search for a property that meets your needs.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

You can find the app in the AppStore (iPhone) and Playstore for all Android smartphones.

Immoscout24

The Immoscout24 App offers you the possibility to find or offer real estate for sale, rent, sale, or rental. With the various filter options, you can specifically search for your dream property. The app also offers useful functions such as moving and financing planning to help you with your decision-making and the implementation of your plans.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

You can find the app in the AppStore (iPhone) and Playstore for all Android smartphones.

Immowelt

The Immowelt Real Estate App offers you the possibility to search for properties for rent or purchase in Germany, Austria, and Switzerland. You can easily find the right property for your needs using various filters such as costs, living area, or number of rooms. In addition, the app offers practical functions such as a map view for searching or the possibility to apply for a Schufa credit report directly within the app.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Here you can find the app in the AppStore (iPhone) and Playstore for all Android smartphones.

Immonet Real Estate

The Immonet App helps you find the right real estate exactly according to your preferences. With the interactive map functions, you can precisely define the search radius and use the extended GPS functions. With simplified search criteria such as “balcony” or “garage,” you can easily filter suitable properties. In addition, the app offers integration with the Apple Watch.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Here you can find the app in the AppStore (iPhone) and Playstore for all Android smartphones.

Trovit Immo

Trovit Immo is a simple Real Estate app that allows you to quickly and easily find the right property for purchase or rent. The search radius function can be individually adjusted, and with extensive search criteria, the search can be efficiently narrowed down. Thanks to push notifications, you will always be up to date.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

Here you can find the app in the AppStore (iPhone) and Playstore for all Android smartphones.

From Poll Immobilien

The Von Poll Real Estate App offers you a simple way to discover a wide range of real estate offers. With the owner dashboard, you can sell or rent out your own property. Additionally, the app allows for a quick and easy online real estate valuation to determine the actual value of your property.

Is the app free?

  • Yes, the app is free

App Download: iOS & Android

You can find the app in the AppStore (iPhone) and PlayStore for all Android smartphones.

Immosuchmaschine.de

The Immosuchmaschine.de App is a specialized application for real estate searches. It combines the most well-known German real estate portals and allows you to search and compare across multiple portals at the same time. With the search agent function, you can specify your search criteria, and the search agent will notify you as soon as a suitable property is found.

Is the App free?

  • Yes, the App is free

App Download: iOS & Android

You can find the App in the AppStore (iPhone) and PlayStore for all Android smartphones.

]]> Intelligent Building Technology (Lexikon) – Controlling the House via Smartphone, Saving Electricity & the Trend of the Future https://lukinski.com/intelligent-building-technology-house-control-smartphone-save-energy-trend-future/ Tue, 26 Nov 2019 12:00:58 +0000 https://lukinski.de/intelligent-building-technology-controlling-the-house-via-smartphone-saving-electricity-the-trend-of-the-future/ Smart building technology is no longer just a toy for tech enthusiasts — it has become a hard return factor. While a conventional apartment building today yields a gross return of 4–6 %, smartly equipped properties can achieve 0.3–0.8 percentage points more rental return and 5–12 % higher resale prices, depending on the location. At the same time, energy costs decrease by 15–30 %, which becomes an argument during the additional costs calculation and marketing. This lexicon entry explains what smart building technology economically means for investors, how you can optimally reflect the investment tax-wise, and from which point the additional cost actually pays off.

Definition: What exactly does smart building technology include?

Smart building technology (also known as Smart Building or Smart Home) refers to the electronically networked control of all technical trades of a property via a central platform. The systems range from simple radio solutions to KNX-based bus systems that are integrated into the electrical installation and make the property technically future-proof for 15–20 years.

  • Heating & Climate — Room-specific control, heat pump control
  • Lighting — Presence, daylight and scene control
  • Shading — Blinds, shutters, awnings weather-dependent
  • Security — Access, alarm, video surveillance, water detectors
  • Energy — PV, storage, wallbox, load management
  • Comfort — Multimedia, voice control, scenes

For investors: Smart home components are not just a comfort investment, but directly affect the energy efficiency class, rentability and thus the market value. Anyone acquiring a property should include the Rating of the technology in the property valuation logic.

Investment costs: What does a smart home upgrade really cost?

The cost spread is enormous — and this is exactly where the leverage lies. A retrofitted radio solution in an 80-m² apartment starts at 2,500 €, while a fully integrated KNX system in a new-build villa can exceed 80,000 €. For the investment calculation, the additional cost per m² that you have to add to the purchase price or construction costs is relevant.

Ausbaustufe Aufpreis €/m² Beispiel 100 m² Energy savings per year Mietaufschlag
Base (heating, heating + light) 30–60 3.000–6.000 € 10–15 % 0,20–0,40 €/m²
Comfort (KNX, shading, security) 120–200 12.000–20.000 € 20–25 % 0,50–0,90 €/m²
Premium (Vollintegration + PV/Speicher) 250–450 25.000–45.000 € 30–50 % 1,00–1,80 €/m²

Before every decision, it’s worth looking at the calculate purchase ancillary costs section, because smart retrofits are already recognized as value-enhancing in many bank loan approvals today — which positively influences your calculate equity requirement value.

Return calculation: Three scenarios for investors

What matters is not the premium, but what it brings you. We compare a classic apartment building (8 apartments, 600 m² living space, purchase price 1.8 million €) without, with comfort and with premium smart home equipment.

Key figure Conventional Comfort Smart Premium Smart
Purchase price / investment 1,800,000 € 1,890,000 € 2,010,000 €
Annual cold rent 86,400 € 91,800 € 97,200 €
Gross yield 4.80 % 4.86 % 4.84 %
General energy costs per year 9,600 € 7,700 € 5,300 €
Value increase after 10 years (estimate) +22 % +28 % +34 %
Vacancy risk medium low very low

The gross yield only shifts marginally — the real lever is in the value increase and the security of rental income. Detailed calculations are provided by the Calculate Gross Yield calculator; for a reliable current view, I also recommend using the Cash Flow Calculator, which realistically reflects amortization, interest and management costs.

Tax Treatment: Depreciation, Maintenance Costs or Construction Costs?

This is where it gets legally tricky for rental investors — the classification determines whether you can deduct your smart home investment immediately or over 50 years. The tax office strictly distinguishes between three categories, regulated in § 6 EStG, § 7 EStG (depreciation) and § 255 HGB:

  • Maintenance costs (§ 21 EStG) — fully deductible immediately
  • Purchase-related expenses (§ 6 Abs. 1 No. 1a EStG) — depreciated over time if more than 15 % of the purchase price within 3 years
  • Construction costs — standard depreciation → 2 % or 3 %
  • Movable assets (§ 7 EStG) — own useful life, often 5–10 years

Concretely, this means: If you replace only one heating thermostat with a smart model, it is considered maintenance cost. However, if you install a fully networked KNX system with new wiring as part of a renovation within the first three years after purchase, you will regularly fall below the 15% threshold of the acquisition-related costs — and must amortize the remaining useful life. As described in the guide Real Estate as an Investment, you should consciously schedule the renovation phase for the fourth year after purchase to ensure the full tax effect.

Funding: How banks assess smart real estate

Since the EU Taxonomy and the tightening of the KfW funding framework in 2023/2024, efficiency criteria are directly included in the lending decision. Anyone presenting a property with energy efficiency class A or B — which is realistically achievable with intelligent building technology — receives interest rate reductions of 0.10–0.30 percentage points compared to class D properties at many banks.

With a loan of 1.5 million € and a repayment period of 20 years, the interest savings alone amount to 30,000–90,000 €. In addition, KfW repayment grants of up to 45,000 € per residential unit (Program 261/262) apply. The aspect of mortgage repayment planning thus gains an additional dimension. Anyone who is setting up real estate financing anyway should integrate the smart home portion from the beginning into the collateral documents.

Capital gains tax & exit: Smart technology when selling

When selling within the ten-year speculation period (§ 23 EStG), the smart home investments are counted as value-enhancing in the acquisition/production cost block. This reduces the taxable gain on disposal. Example: You have invested 35,000 € in premium technology and sell after eight years with a book profit of 280,000 €. With a personal tax rate of 42%, the allocation reduces your tax burden by around 14,700 €.

Before each exit, it’s worth checking the speculation tax calculator as well as comparing valuation methods — a modern smart building is systematically valued higher using the income capitalization approach than with the classical asset-based valuation method, because the sustainable rental income increases the multiplier.

Decision aid: Is smart technology worth it for your investment?

The honest answer is: not always. The following heuristic has proven itself in practice and replaces a formal decision tree:

  • Location A+ (Munich, Hamburg) — Premium upgrade is almost always worthwhile
  • Location B (medium-sized cities) — Comfort level is usually optimal
  • Location C (periphery) — only basic smart, otherwise overinvestment
  • Holding period < 5 years — only maintenance measures
  • Holding period > 10 years — full KNX upgrade economically sensible
  • New construction — always plan for smart-ready wiring

For the initial investment in this field, I recommend fully equipping a single property — ideally the pilot project — and measuring the results over two rental cycles. Those investing for the first time will find concrete step-by-step guidance in our guide to buying your first property. Those looking to scale should take the leap to buying an apartment building — there, the smart-building leverage per invested euro is the greatest.

FAQ — Frequently asked questions from investors

How does intelligent building technology affect the market value?

Current market analyses show premiums of 5–12 % compared to similar properties without smart fittings, up to 15 % in premium locations. However, the quality of integration is crucial: an outdated island solution system can even reduce value, as buyers may factor in a potential dismantling. Therefore, invest in open, standardized systems such as KNX, Matter or ZigBee 3.0, which will still be supported in ten years’ time.

Can I pass on Smart-Home costs as a landlord?

Pure investment costs are not passable on to tenants, but ongoing maintenance and service costs of the system according to § 2 BetrKV can be, provided this is explicitly regulated in the rental agreement. Modernizations according to § 559 BGB also allow for a rent increase of 8 % of the costs incurred per year — for a 20,000 € Smart-Home investment this would be 1,600 € annually, distributed across the affected residential units. This must be formally announced and justified.

Which Smart-Home investment is the biggest return driver?

From an investor’s perspective, clearly the combination of individual room heating control, photovoltaics with battery storage, and intelligent wallbox. This combination reduces additional costs by 25–40 %, qualifies for KfW funding, and often moves the energy efficiency class up by two levels. The payback period typically lies between six and nine years at current energy prices — with a remaining useful life of the technology of 15–20 years, this is clearly a positive business.

Back to the Wiki: Real Estate Lexicon

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