Architects and architectural designers near Leigh-on-Sea

Design Spec Ltd are Essex and Hertfordshire's fixed-fee architectural designers, specialising in house extensions, loft conversions, garage conversions, and planning permission drawings. We deliver same-day fixed-fee quotations with no hourly billing and no hidden extras. Services include planning applications, building regulations drawings, structural calculations, party wall surveying, and permitted development advice. Every client receives a free introduction to a vetted local builder through our Connect network once planning is approved. We serve homeowners across Essex, Hertfordshire, and the wider South East. From first enquiry to planning approval and beyond, Design Spec offers reliable local expertise with complete transparency.

NSP Architectural is a family-run residential architectural design and planning practice based in Rochford, Essex, working across Essex, London and surrounding counties. We take homeowners and developers from first idea to approval and Building Regulations, including measured surveys, planning applications, permitted development and lawful development certificates, pre-applications, 3D visuals, structural coordination and appeals. We also prepare Land Registry plans, title splits and lease plans, and act as Principal Designer under CDM 2015. We offer a free site appraisal report as part of your initial consultation.