Company portrait
Profile and services
- Primary profession
- Real estate agent
- Location
- Barcelona, Spain
- Specialism
- –
- Other professions
- –
- Online consulting
- Not stated
- Coverage
- Regional
- Languages
- English
- Profile status
- Editorially documented
- Website
- inmobiliariadiagonalmar.com/
Profile at a glance
- Profession
- Real estate agent
- Focus
- Not stated
- Location
- Barcelona
- Languages
- English
- Online consulting
- Not stated
- Data as of
- 04/10/2026
- Google data checked
- 04/10/2026
What to look for in Barcelona
With agents in Barcelona, look for local knowledge of the neighbourhood, a transparent valuation and a clear contract. In Germany a licence under § 34c Trade Regulation Act is mandatory.
Editorial note for orientation – not legal or investment advice.
How the first contact works
- 1
Describe your goal: selling, letting or buying, property type and timeframe.
- 2
The office replies with questions and a proposed appointment.
- 3
Viewing or valuation appointment on site.
- 4
Agree the agency contract and commission in writing before instructing.
Common questions before you enquire
Who pays the commission on a purchase in Germany?
When flats and single-family houses are sold to consumers, the commission is generally split equally (§ 656c German Civil Code). The contract must be in text form.
Which documents should I prepare?
Land register extract, floor plans, floor area calculation, energy certificate and, for flats, the declaration of division and recent owners' meeting minutes.
Is the first estimate free?
Many agents offer a non-binding initial estimate. Ask beforehand whether any costs apply.
Key local offices in Barcelona
- Sede Electrónica del Catastro
Land registry catalogue and reference values
- Ajuntament de Barcelona
Permits and local rules
Links to official websites; details may change.
Market data for Barcelona
We do not publish our own price figures. Current prices, rents and land values come from the official sources below.
Guides on this topic
Selling property in Germany: step by step
From valuation to the notary appointment – what happens when you sell a flat or house.
Choosing the right estate agent
How to recognise qualifications, market knowledge and a fair agency agreement.
Agent's commission: who pays what?
The rules for buying and renting in Germany in brief.
Profile summary
Agencia Inmobiliaria Diagonal Mar Real Estate, en Barcelona, Besós y Maresme at a glance
Diagonal Mar Real Estate is an estate agency in Barcelona whose website identifies Diagonal Mar and Sant Martí as its principal areas of focus. Its offering covers residential property purchases, sales and rentals. The supplied listing extract includes apartments and houses in Barcelona, Badalona and Corbera de Llobregat. The property search can be filtered by location, price and property type, among other criteria.
For owners, the agency advertises a free property valuation and an initial meeting without obligation. Its online valuation is described as drawing on current market data, recent sale prices and local trends. Marketing activities listed on the website include photography, online and offline promotion, and arranging viewings. The agency also describes assistance with contracts and notary appointments, alongside support concerning mortgages, inheritances, taxes and administrative procedures.
The supplied Google data show a rating of 4.8 out of 5 from 548 reviews. Customers in the provided selection particularly discuss guidance during purchases and sales, and clear communication. The sources do not establish the founding year, team size or confirmed consultation languages.
Automatically summarised from the company's publicly available information, as of 04/10/2026. Not individually verified by the editors. Sources: inmobiliariadiagonalmar.com
Services according to the company
- Residential property purchase and sale brokerage
- Rental property brokerage
- Free property valuation
- Online valuation using market data
- Free initial meeting without obligation
- Property photography and online and offline marketing
- Arranging property viewings
- Assistance with contracts and notary appointments
- Support with mortgages and financing questions
- Support with inheritance, tax and administrative matters
Editorial context
Working with a provider in Barcelona – what matters
When choosing an estate agent in Barcelona, first establish whether its geographical focus and property specialism match your plans. Diagonal Mar Real Estate’s website focuses on residential property in Diagonal Mar and Sant Martí, while the supplied listings also include properties elsewhere. Prospective clients should therefore ask about comparable properties in their specific search area and confirm that individual listings remain available.
For sellers, it is important to understand how the advertised free valuation is prepared. A transparent assessment should consider comparable properties, condition, location and the property’s individual characteristics. An online estimate provides guidance rather than a guarantee of the eventual sale price. Before appointing an agent, owners should clarify the marketing scope, viewing arrangements, fees, contract duration and any exclusivity conditions in writing.
Buyers and prospective tenants should establish which assistance is actually included before, during and after a transaction. Since the agency mentions support with financing, taxes, inheritances, contracts and notary appointments, it is worth asking who handles each task, what qualifications they hold and whether external professionals need to be engaged. These service descriptions do not replace individual legal or tax advice.
Clients unfamiliar with the Spanish property market should also agree on the consultation language, required documents, contact person and communication arrangements early on. Customer reviews can offer useful indications, but they reflect individual experiences rather than assured outcomes.
Editorial context based on documented profile details, as of 04/10/2026. General information, not legal or investment advice.
Opening hours
- Monday: 9:30 AM – 6:00 PM
- Tuesday: 9:30 AM – 6:00 PM
- Wednesday: 9:30 AM – 6:00 PM
- Thursday: 9:30 AM – 6:00 PM
- Friday: 9:30 AM – 6:00 PM
- Saturday: Closed
- Sunday: Closed
Source: Google, as of 04/10/2026
Questions & answers
Which areas does Diagonal Mar Real Estate cover?
The website names Diagonal Mar and Sant Martí, alongside other areas of Barcelona. The supplied listing extract also includes properties in Badalona and Corbera de Llobregat. Castellet i la Gornal and Sant Adrià de Besòs are selectable in the location search, but this alone does not confirm current property availability.
Does the agency also handle residential rentals?
Yes. Alongside purchases and sales, the website explicitly mentions residential rentals and provides a rental search option.
Is the property valuation free?
The website describes its professional property valuation as free. It also presents an online valuation without obligation, described as using current market data, recent sale prices and local trends.
What does the agency handle when selling a property?
The website describes valuation, photography, online and offline promotion, viewings, and assistance with contracts and notary appointments. Specific fees and contract terms are not included in the supplied text and should be requested directly through the contact form.
Is consultation available in German or English?
The sources do not provide a confirmed list of consultation languages. English-language reviews do not guarantee service in a particular language. Please ask directly through the contact form about your preferred consultation language.
Experiences & reviews
Experiences and reviews of Agencia Inmobiliaria Diagonal Mar Real Estate, en Barcelona, Besós y Maresme
Here we collect client experiences and publicly available reviews. Every review on our site is checked by the editors before publication.
Reviews on our site
There are no verified reviews for Agencia Inmobiliaria Diagonal Mar Real Estate, en Barcelona, Besós y Maresme here yet.
The bars fill as soon as the first verified review is published.
Google reviews of the company
4.8out of 5 on Google · 548 reviews
For these 548 reviews Google only publishes the overall score and count, no breakdown by stars and at most 5 individual review texts. A star distribution could therefore not be substantiated. As of 04/10/2026.
See all reviews on GooglePositive voices
No positive reviews published yet.
Critical voices
No critical reviews so far.
Selected reviews on Google
The supplied Google data show 4.8 out of 5 from 548 reviews. The provided selection consists of five entirely positive, five-star reviews. Recurring themes include professional service, responsiveness, clear explanations and attentive guidance through purchases or sales. Several customers describe patience and helpfulness; one specifically highlights advice without pressure to complete a deal. One seller reports selling an apartment within 50 days, which should be understood as an individual experience. No critical themes appear in this selection. This does not establish that the full set of reviews contains no criticism.
Thanks to Gullimore and Domenec for helping me to sell my flat in 50 days. They are very professional and responsive throughout the entire process and guided me step by step. I strongly recommend them whether you are a local or international buyer/seller. Communication is top notch by the agency.
It was a super smooth experience from start to finish. The team is very professional, friendly, and clearly knows what they’re doing. We especially want to highlight Rita, who showed us the apartment for the first time – she gave a very professional tour and made us feel in safe hands right away. Also, a big thank you to Xavi, who made the whole buying process easy to understand, straightforward, and completely stress-free. We highly recommend them both! Thank you guys for the amazing service ❤️
My experience with La Casa agency was really good. Andrea Tortora was very responsible and attentive to details. Considering that I had no experience with the market in Spain, his assistance can’t be underestimated. I’m ready to recommend this agency and particularly Andrea. Despite of the complexity of the deal I had all the problems sorted out. Thank you
My family and I are super delighted with the purchase of our new apartment. The experience and treatment we had from the Agency, especially from Berta, was professional and excellent. She was dedicated, patient and helpful throughout the process. We’d certainly recommend them😊 Thank you La Casa - Diagonal Mar 🙏
I met Rita, the agency sales rep several times now as I’m looking for a place to buy in BCN. Since the start, she’s been very helpful, available to answer all my queries and questions, taking time to listen while not being pushy to close any deal. In the aggressive jungle that is the real estate market in BCN nowadays that means a lot. Thank you Rita
Selection of up to five reviews provided by Google, shown unchanged; summary generated automatically. These reviews are not included in the rating on our site.
Offensive posts, anonymous abuse and posts without a recognisable client relationship are not published. Reviews are subjective individual experiences.
Services in this field explained
A valuation estimates the price a property can achieve on the market, based on location, condition, size, fittings and comparable sales.
What does a valuation cost? Many agents offer an initial estimate free of charge. A formal market value report by a certified surveyor is paid; the fee depends on the property and effort.
When you sell, an agent handles valuation, exposé, viewings, negotiation and the notary appointment.
Who pays the agent's commission? When flats and single-family houses are sold to consumers, the commission is generally split between seller and buyer (§ 656c German Civil Code).
When letting, an agent takes care of listing, viewings, tenant selection and the tenancy agreement.
Who pays the agent when letting? Since 2015 the “orderer pays” principle applies to residential lettings: usually the landlord pays when they hired the agent.
Getting there
- Diagonal - Llull· ca. 50 m
- El Maresme· ca. 60 m
- Diagonal - Pl Llevant - Final de trajecte· ca. 70 m
- Metro Maresme / Fòrum· ca. 70 m
- Metro Maresme - Fòrum· ca. 160 m
Nearby stops according to Google, straight-line distance.
Questions for the company
No public questions yet. Ask the first one.
Similar providers with a comparable focus
Selected by field, city and focus – no ranking, no paid placement.
Sources and transparency
Profile status is not a guarantee of quality, financial strength or superiority. It indicates how the published details were documented.
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