Programming a website for a construction company (php-symfony)

It is necessary to develop a software part of the site on our management system
She's in a symphony.
The structure is roughly

• Main page page
About the company
• History of the company
• Management
• Corporate values
• Customer service
• Facilities to be implemented
• Partners
• Vacancies
• News
Market news (corporate unit, market analytics) – will be interesting for subscribers and in the future for PR
• Company news
• News archive
• Stocks
• New buildings
• LCD "Olgino Park";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "Pearl of Victoria";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "High Larks";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "Butovo Park 2B";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "Alekseevskaya Grove";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "Valentinovka Park";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "White Dews";
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• Tosno, Leningrad region.
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents

• LCD "Putilkovo", Krasnogorsk district
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• Forest City LCD
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• Butovo Park 2 LCD
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents
• LCD "Islands"
• Site page
• Apartments for sale
• Parameter selection
• Photo gallery
• Planning
• Documents

Calculator Selection of apartments (search)
Selection parameters:
• Selecting direction
• Number of rooms
• Total area
• Selection of floor
• Cost of the apartment
• Non-residential real estate
• Commercial real estate
• Machine placement
Mortgage
• Mortgages
• Military mortgage
• Useful information
• Recommendations to buyers
• Information on grants
• FAQ (question-answer)
• The feedback form
• Callback
• Sign up for a review
• Ask a question
• Contact phone
• Contacts