- Total weight
- 757KB
- Requests
- 20
- External dependencies
- 0
- Frameworks
- 0
- HTML7 KB
- CSS17 KB
- JavaScript29 KB
- Images704 KB
Average website: 2,311 KB and 70 requests on mobile, according to HTTP Archive’s Web Almanac 2024.
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Live · redvivienda.es
RedViviendaProperty portal
Flats, houses and holiday lets in Spain
A complete property portal to buy, rent or book by the night anywhere in Spain. Besides searching and listing, it offers what other portals do not: a register of defaulting tenants, a free valuation of any home and alerts that arrive the same day. I designed and built it from end to end: the interface, the database and all the server logic.
- ways to search: buy, rent and by the night
- 3
- interface languages
- 5
- first listings free
- 2
- sign-ups needed to value a home
- 0
The portal, inside
Real screenshots of the live website.
Register of defaulting tenants
Look up an ID or tax number with an instant result, register unpaid rent backed by a prior accredited claim, and a good-payer certificate for tenants.
Rent by the year or by the night
Hotels, hostels, tourist flats, rural houses and private homes. The same property can be let both ways, with calendar, nightly price and bookings in one account.
Same-day alerts
Email alerts for new listings and price drops on favourites, unlimited alerts, and the same on mobile and desktop.
On mobile
The same website, adapted to every screen: real screenshots on a phone.
Measured in production
The redvivienda.es home page, measured on 4 November 2026 with the browser’s own tools.
- HTTP/3 + Brotli compression
- Zero third-party requests: no CDN, no analytics, no Google Fonts
- Alt text on 100% of images (8/8)
- Lazy loading on 8 of 8 images
- Structured data: WebSite, RealEstateAgent, WebPage
- Canonical URL and 10 Open Graph tags
- Full semantic structure: header, nav, main and footer
What it had to solve
Yet another property portal adds nothing. Red Vivienda had to cover what landlords and tenants miss in the others.
Search the way people think
Buy, rent or holiday let, by property type and by town, neighbourhood or metro; and also by selecting areas directly on the map.
Protect the landlord
Know before signing whether a candidate has unpaid rent, and register a default backed by documents.
All renting in one place
Long stays and nightly stays on the same platform, with calendar and bookings included.
Give value without asking
A free online valuation with no sign-up, with sale and rent ranges from land-registry data and comparables.
Alert in time
Same-day alerts and price drops on favourites, so you are never late for a flat.
Help until the end
Free mortgage comparison with every bank and up to four recommended agencies.
Architecture: a custom-built web application
Every page, query and server process is custom-built: PHP on the server, MySQL as the database and JavaScript in the browser.
| Layer | What is there | Origin |
|---|---|---|
| Interface | Search, listings, area map, advertiser dashboard and messages, in five languages (HTML, CSS and JavaScript) | Hand-made |
| Server | Users, listings, bookings, alerts, valuations and the defaulter register (PHP) | Hand-made |
| Data | Properties, accounts, calendars, alerts and registered defaults (MySQL) | Hand-made |
| Notifications | Same-day emails for alerts and price drops | Hand-made |
| Mapping | Base map on which areas are selected | External service |
| Public data | Land registry as a reference for valuations | External service |
How a tenant check works
Lookup
The landlord enters the candidate’s ID or tax number.
Search
The server checks the defaults recorded in the register.
Result
Instant answer: no defaults, or the defaults on record.
Registration
A default is only recorded with a prior accredited claim.
Certificate
Tenants with no defaults can obtain a good-payer certificate.
Follow-up
The debt is tracked until it is settled.
What it does
The features you can find on the website today.
- Live
Search by type and area
Buy, rent or holiday let; homes and other properties; by town, neighbourhood or metro.
- Live
Areas on the map
Search areas are selected directly on the map.
- Only on Red Vivienda
Defaulting tenants
Instant lookup, registration with an accredited claim, good-payer certificate and debt follow-up.
- Live
Holiday lets
Hotels, hostels, tourist flats, rural houses and private homes, with calendar and nightly price.
- Live
Online valuation
Free and with no sign-up: sale and rent ranges from land-registry data and comparables.
- Live
Alerts and favourites
Same-day email alerts, price drops and unlimited alerts.
- Live
List a property
The first two listings are free.
- Live
Messages
Conversations between buyers or tenants and advertisers inside the portal.
- Live
Mortgages and agencies
Free mortgage comparison with every bank and up to four recommended agencies.
Challenges and how I solved them
Real problems from the project, the solution I applied and what it achieved.
One property, two ways to rent
- Problem
- Long-term and holiday rentals are usually separate, so landlords end up duplicating listings and calendars.
- Solution
- The same property supports both: monthly price, nightly price, calendar and bookings in one account.
- Result
- One listing, two markets
A reliable defaulter register
- Problem
- An unchecked list of defaulters can point at someone who owes nothing.
- Solution
- Only defaults backed by a prior accredited claim are recorded, tenants can request a good-payer certificate, and every debt is tracked until settled.
- Result
- Instant lookup backed by documents
Search by real areas
- Problem
- The areas people want to live in do not match the options in a drop-down.
- Solution
- Besides searching by town, neighbourhood or metro, areas are selected directly on the map.
- Result
- Search follows the user, not the street map
Valuation without sign-up
- Problem
- Asking for personal data in exchange for an estimate scares off people who just want a guide.
- Solution
- The valuation is free with no sign-up, and returns sale and rent ranges from land-registry data and comparables.
- Result
- An instant estimate, no friction
Tech stack
- Languages
- PHP, JavaScript, SQL, HTML5, CSS3
- Database
- MySQL
- Features
- Map areas, booking calendars, email alerts and messages
- Interface
- Responsive design for mobile and desktop, in five languages
- External data
- Land registry and comparables for valuations
Try it live
Red Vivienda is live: search, check the defaulter register or value a home right now.
Shall we talk?
If you would like me to show you how it is built inside, or you are interested in my profile, write to me.
Or, if you prefer, another channel: