Web app development
If you are looking for a high-experienced web and software developing firm, I can recommend https://brights.io/ which is having a lot of positive feedbacks giving the whole picture of this company. They are having online consultation and 24/7 support as well.
Try to find the best for yourself in this review https://themanifest.com/web-development/companies, or this list of Python development companies – https://echoua.com/python-development-companies/
In my experience, my company used the services of Attract Group and we were satisfied with the result
Real estate is rather an interesting niche but it is still very competitive at the same time! So if you want to get a particular profit in the end, you have to think about the high quality of your web application. On this purpose I strongly recommend you to work you with a good reliable software development company like Echo (https://echoua.com) who has really great experience in the market.
My company almost always uses outsourcing services from CIS countries or Asia. Now it is profitable to find a dedicated development team as FlyOutsourcing and work with them. Professional IT solution is in almost every corner, I as the owner of the company in Los Angeles, often more profitable to find a solution in the United States
Yes I have a hand on experience with a London web design company whose used to design and develop web site recently I have also contacted them and they complete all my requirements