• Rentberry

  • Rentberry is a new-to-blockchain rental housing platform.

About Rentberry

What is Rentberry?

Rentberry is a new-to-blockchain rental housing platform. Rentberry is not a typical blockchain start-up, in that they already have an established platform and users (tenants and landlords). They are relatively new however, only going live early 2017, and the blockchain leveraged upgrade of their platform has yet to be implemented. Their business currently caters to cities in the U.S.A.

The purpose of Rentberry’s Initial Token Sale (ITS), and conversion to blockchain is to (1) raise capital to expand internationally, and (2) reduce inefficiencies, inconveniences, and insecurities present in the rental housing market today.

Rentberry’s use case is that although the number of renters has substantially increased, with the average person renting until 40 years of age, there remains a number of problems in the current rental housing ecosystem. These include: (1) tedious rental applications, (2) frequent bidding wars with other prospective tenants without transparency on the current bid, (3), uncomfortable face-to-face negotiations, and (4) frozen security deposit assets regardless of tenant’s credentials and track record, to name a few.   

Rentberry claims to make this process less costly, more convenient, secure, and transparent.

Less costly: Agents and brokers sometimes charge additional fees for minimal services, and landlords for tenants to freeze thousands in rental security deposits. Rentberry will eliminate the need for agents and brokers by allowing peer to peer rental negotiations, agreements, and executions. Rentberry will also provide a crowdsourced security deposit network which will effectively unfreeze security deposits to generate interest.  

Convenient: Many practices still involve posting listings or classified ads in local newspapers. Websites are available such as Craiglist, Zillow, Rightmove, Zoopla, but provide limited information on properties, and no support for contracts rent collection, maintenance requests etc. Rentberry will provide a platform with all services in one place, including screening prospective tenants, negotiating, e-signing contracts, paying rent, and hiring third-party providers. Landlords can reject or accept applications in a single click, while providing them with market data to make educated decisions about pricing. The same goes for tenants.

Transparent: Tenants will be able to see other bids on the property. They will also be able to adjust their bids, making this a true auctionary platform. Tenants and landlords will be able to rate each other by submitting reviews. Both parties can access each other’s rental activity via the blockchain. Credit reports, background checks, social media, bankruptcy records, eviction history, and past due account information will also be combined with this information and processed by Rentberry’s backend scoring system to create a tenant / landlord score from 1,000-10,000.

Secure: The platform will be transported to the blockchain, and BERRY used a means of transacting. Scheduling, internal communications, renter and landlord profiles and scores, will all be stored securely and cryptographically on the blockchain. Tenant history will only be available to landlords upon application for a rental, when the tenant cryptographically signs the application with their private key.

Other proprietary features:

Syndication: Using BERRY tokens, landlords can promote their listing not only on Rentberry.com but on additional rental sites that join the ‘Rentberry syndicate’.

Crowdsourced Security Deposit Network: Members of Rentberry will be able to utilize BERRY to fund other tenants’ rental security deposits as a type of loan. They will have access to tenant history, information and scores. The benefit to funders will be in the form of interest (3-7%) and ‘other’ rewards for tenants. Unfortunately it does not seem that Rentberry has fully established how this will work, and why funders would want to lock up their BERRY in this investment, which may be subject not only to BERRY currency value fluctuations, but dependent on the tenant not causing damage. An investor could make 3-7% with more safety in the stock market, or much more with riskier crypto investments. Additionally, not having tenants pay a deposit might remove some of the incentive for them to take good care of their rental.

Auctioning technology: Rentberry believes its technology used to negotiate bidding is intellectual property and is currently filing for patent protection. The technology allegedly will allow for landlords to appropriately price their property effectively in any market conditions, and tenants the ability to seamlessly and transparently negotiate and compete with other tenants. Of note, the application cost for a rental is 1000 BERRY. Any successful rental will have 950 BERRY go towards initial payment, and 50 to Rentberry as a fee. All unsuccessful applications will have funds returned.

Integrations with blockchain and other companies: Rentberry mentions potential collaboration with CIVIC for biometric identity verification, and APII for verified education and professional records. They also mention integration with third party service providers and utility companies to provide seamless utility bill payments. These are purely hypothetical at the time of writing.

Smart locks: Team is currently working on smart lock technology that can be used by landlords to unlock a rental for a potential tenant to view the property. Identity would be confirmed by CIVIC, and the previous issue in this space of electronic lock battery life would be solved by using power from the tenants connected smartphone.

Data generation and utilization: The Rentberry platform will utilize a common theme in blockchain space: data decentralization. The platform, with all data stored on the platform, will offer tenants and landlords the option of commercializing said data to be accessed by third parties. This will be under the control of the user, compliant with security and privacy laws, and will reward users in BERRY. Not noted, is what contact information will be provided to these companies, if users opt for that level of data disclosure. We all know that once your email is out there, there is very little control over whose hands it ends up in. Therefore, this information would ideally be conducted within the Rentberry platform.  

Usecase for the BERRY token:

The BERRY token will be used for all payments on the platform. Landlords, after collecting rent in BERRY, can pay for promotion, invest in security deposits, and hire maintenance providers. Tenants can make rental payments in BERRY. Thus fees associated with credit cards, wire transfers, bounced checks, etc will be removed, and security of transaction with the immutable blockchain ledger.

Red Flag:

The following paragraphs outline some problems evident in Rentberry’s whitepaper and proposed platform, at the time of writing. These are not meant to discourage or encourage investing, but to provide insight on some of the challenges Rentberry will face. An analysis of any blockchain company would identify many challenges.


  • Rentberry’s website has some formatting issues that were apparent on first use. This is surprising for an already established business and given the company team has many (5) frontend developers.
  • The bonus structure of their main ICO (volume bonus for purchasing 5+ETH and for large 300 ETH purchasers) is not good practice. See Vitalik Buterin’s tweet for the reasoning.
  • There is a clear unevenness in demand on their platform, as they have 224,000 properties listed, but only 4000 rental applications processed. One might question Rentberry’s profitability and business model. 
  • It is stated in their whitepaper that landlords, collecting rent, could use the BERRY to pay for promotion of their properties. This assumes that the landlord has more than one property to rent, which is probably not the case for the average landlord.
  • It is concerning that there is no process outlined in the whitepaper to ensure liquidity of BERRY. In general, a conversion of the platform completely to BERRY assumes that cryptocurrencies have mass adoption, and this BERRY could then be used or easily converted to a currency to be used in the real world. Given the current state of crypto, landlords will want to liquidate their rent payments to fiat so that they can use them (and also not expose themselves to currency fluctuations). This doesn’t seem incredibly convenient, even though Rentberry’s stated purpose is to make the rental process more convenient for all parties. Other blockchain companies in this space seem to offer rental payments converted automatically to any ERC20 token.
  • It is also advisable to go through their original bitcointalk forum and their newer one, as there are some fraud allegations, although these have not been proven or disproved. These forums are also filled with many good questions with answers provided directly from the Rentberry team.


Overall competent but not outstanding team, none with blockchain experience. Co-Founder and major developers were discussed above. Aleksey Perfilov is promising. Most ‘Blockchain Developers’ were actually web developers and no blockchain specific experience. There is at least a good number of developers, including 5 frontend developers.
Alex Lubinksy

Investment banking executive. Degree in Economics and Business Administration. Financial analyst at Cisco, consultant for Deloitte, Director positions at investment firms, and Co-Founder of CityHour, a business networking app.


Lily Ostapchuk
Co-Founder and CPO

Was also CPO at CityHour. Marketing director for a property management company, and a Ukraine News agency. MSc in International Relations.


Aleksey Perfilov
Co-founder and CTO

BA, Computer Science (UC Berkeley). MSc. Management Science and Engineering (Standford). Also worked at CityHour. Software engineer at Phoenix Technologies, Altera, Hi5, and Amazon Music (still works there presently).


Serge Gritsenko

Agile Development experience, Program Manager for ROLIK, Bazelevs (media group), and DIGI, including vast experience managing developers and designers. Degree in Business Economics.  


Denys Golubovskiy
Blockchain Developer

Rentberry position includes developing REST APIs for AngularJS, setup infrastructure for the project on Amazon Web Services, managing development team and estimate features. Previously backend developer for Afterplay (iOS apps) and Trinetex (diversified software IT company). MSc in Informational Security Management.


Eugene Terentev
Senior Software Engineer

Has worked as a freelancer, Big Data analytics software development for ZEO, Web developer for a number of companies before that.



David (Dmitry) Sviatozhenvsky
Software Engineer

PHP specialist. BS in Software Engineering. Previously worked as a PHP developer for Miritec (software services company), and Kijiji (an ebay company).


Eugene Kurasov
Web Developer

Exclusively PHP developer for Tonic Health, iGid, and CodeIT. Attended a University of Radio Electronics.


Alex Svityashchuk
Software Developer

Web application developer for Universal Commerce Group (present), Global Games, Nadavi Trade System. PHP developer for Miritec. BS in Software Engineering, MS in System Software.


Crowdsale Details

Token Sale Dates

Initial Token Pre-Sale:

December 5, 2017 –  January 26th, 2018 (or until 100,000 ETH cap reached)

Minimum purchase of 10ETH

Bonus structure from +33% tapering to 13% (view website for detail)


Token Main Sale:

January 26 – February 28, 2018 (or until 100,000 ETH cap)

Minimum purchases of 0.1 ETH

100,000 ETH cap is cumulative. If reached in pre-sale, then main sale will not occur.

Total Supply

ITS supply = 270,000,000 (70%) BERRY tokens. Final amount will depend on bonuses applied to each token sale. All unsold tokens from the token sale are burned.

~77,142,000 (20%) BERRY token become the Rentberry reserve – used for future distributions, performing real estate initiatives, or inside platform promotions. None of the reserve will ever be distributed to employers or investors.

~38,571,000 (10%) BERRY tokens distributed to founders, employees and early investors

Raise Limits

100,000 ETH (hard cap)

No soft cap mentioned

Pricing Structure

Various bonuses. Basic structure:

1 ETH = 1,500 BERRY

BERRY can be purchased with ETH/BTC

Project Highlights

Technical White Paper


One pager: https://rentberry.cryptonomos.com/downloads/Rentberry_One_Pager.pdf

The 68 pages long whitepaper is surprisingly easy to read and is designed in a comfortable fashion. They try to cover most issues they’re currently facing and think they will face in the future in, but most information regarding other issues such as low-properties-listed-to-rental-applications ratio, for instance, is missing.


California, USA (Silicon Valley)


Etherium (ERC-20 or ERC-223 token standard – not established yet)

Project Code


No code specific to blockchain-based platform.


They have their already established platform.

There is no prototype for the blockchain-based platform.



View Breakdown

Is the product ready for use? Is there a working prototype or MVP? How long until it is operational?

2 - Proof of concept or test platform.

Does this solution have a distinct edge?

3 - Interesting.
Target User Base

Is it mass market or niche?

5 - General audience / mass market.

Are there many other similar solutions or is this one of just a few, or even one of a kind?

2 - Quite a few / somewhat better competitors.
Innovation and IP

Is there (patentable) innovation and intellectual property?

3 - Partial, a novel approach or aspect.
Use of Blockchain

View Breakdown
Blockchain Development

Is blockchain technology essential? Does it make the solution significantly different and better?

4 - Innovative use of blockchain technology.
Disruptive Blockchain Advantage

Is it safeguarded against misuse and corruption?

3 - Potentially disruptive.
Need for Custom Token (vs. BTC or ETH)

Is the token essential or could it be done just as well or better with fiat or Bitcoin?

3 - Issuing a custom token is justifiable.
System Decentralization (besides token)

Does the token provide holders with value other than as an investment?

4 - Mostly decentralized.
Contribution to Blockchain Ecosystem

Does the solution contribute to the evolution of blockchain infrastructure and economy?

3 - Interesting.

View Breakdown

Does it cover the full scope of the problem and solution?

4 - Satisfactory coverage, well written.

Is it easy enough to understand?

5 - Crystal clear. Enjoyable.

Does it candidly describe and disclose where the project now stands, how much exists and how much still needs to be done, etc.?

4 - Informative disclosure.
Business Plan Presentation

Does it contain a viable, comprehensive business plan?

4 - Clear, well thought out, realistic.
Technology Presentation

Does it present a well thought out technological architectecure? Does it address implementational challenges?

3 - More information required.

View Breakdown

Is there a concrete and practical development plan (vs. just a conceptual vision)?

2 - Vague, noncommittal.

Is the development plan realistic? Is it based on reasonable goals and timelines?

3 - Optimistic.

Is there a larger, long-term vision?

3 - A trend with potential.
Dependencies (other services or capabilities required)

Does it seem as though a lot of know-how and experience went into the development plan?

2 - Not fully available or trustworthy.
Current Position

Is the project currently sufficiently far along in its development plan (relative to its vision and plans)?

1 - Nowhere yet.

View Breakdown
Token Utility (intrinsic value through usage)

Is there a concrete business plan (vs. market descriptions, general sentiments, and fluff)?

4 - Distinctive use cases.
Token as Security (tradable financial instrument)

Is the business model realistic? Is it based on reasonable goals and timelines?

3 - Partly; compliance not fully assured.
Token / Smart-Contract Infrastructure Readiness

Are the solution's revenue streams, profit mechanisms, key KPIs, etc. clear and easy enough to understand?

1 - Nothing yet, just an idea.
Attention to Compliance Issues

Is the project raising an amount of money that makes sense given what it needs to reach profitability?

3 - Limited to blanket standard.
Legal Review or Agreement

Is it safe from legal, moral or investor abuse?

2 - Insufficient or unprofessional.
Company and Team

View Breakdown
Company Stage and Foundation

Is the company already established? Has it raised funds before? Is it mature?

5 - Well established, has raised significant funds.
Background of Lead Team Members

Do we know who they are? Do they have LinkedIn profiles? Do they have solid, relevant backgrounds?

3 - Minimally sufficient.
Team Assembly and Commitment

Is a solid, fully committed core team in place? Do they have online (e.g. LinkedIn) profiles showing sufficient relevant experience? Is their participation transparent?

4 - Fully assembled and committed.
Team Skill Set Relevance

What is the level of presence, added value, and commitment of the advisory board?

3 - Correlated to project requirements.
Team Skill Set Balance (biz / tech / blockchain)

Are there enough sufficiently experienced blockchain architects and developers on the team?

3 - Somewhat uncertain, probably okay.
Token Sale

View Breakdown
Raise Amount Max

Is there a clear cap? Is the maximum raise amount modestly sufficient (as opposed to either greedy or insufficient)?

2 - Somewhat greedy or unrelated to plans.
Raise Amount Min

Is the minimum raise reasonably enough to carry out the majority of the development plan? Are there raise amount dependent milestones?

3 - Justifiable.
Fund Allocation

Is fund distribution and allocation reasonable and justified?

4 - Well defined and reasonable.
Token Allocation

Is the ratio of tokens sold to those kept reasonable? Does it prevent the company from having too much control?

4 - Most tokens sold, vesting periods on kept tokens.
Media Presence and Following

Is the ICO well planned in terms of time, phases and scenarios?

4 - Solid exposure and interest, good impression.

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