OAS Architectural firm (Online Architectural Services) is a consultancy firm based in Stratford, London which provides planning applications and building regulations drawings around London since January 2017. We have performed numerous small and large, residential projects such as extensions, renovations, loft conversions, garage conversions, and new build houses, and so on. we also have comprehensive experience in luxurious interior design projects. If you are worried about your residential projects then don’t get panic, leave it to us. And it will be our responsibility to make your dream project come true. We have expert engineers and consultants who can provide architectural designs at an affordable price along with other services such as dealing with the council applications, engineering calculation, and party wall survey services.