back to listings SME Profile: Grayston Alan Durtnell LLP

The Gatehouse, 7 East Point, High Street, Seal, Sevenoaks, Kent, TN15 0EG     |     T:  01732 760076     |     E:         W:


about us

An RIBA Chartered Practice with over 25 years professional experience. We have offices in Sevenoaks and Reigate and undertake projects across London and the south east.  The Practice has expertise in the following sectors, and can show completed projects in each:

Residential housing

One-off bespoke designs, re-modelling and domestic extensions, affordable housing, sustainable including Passivhaus, large developments and Listed buildings.  Experienced working in Green Belt, AONB, Flood Zones and Conservation Areas.


Teaching and IT Facilities, Sports Halls, Performing Arts & Music facilities, Swimming Pools, Science Laboratories, Early Years & Pre School/Nursery provision.

Residential and Nursing Care

Residential, Dual Registration, Extra Care and Nursing Care.

Churches and Ecclesiastical

Church Centres, Re-ordering Worship Spaces, Gathering Spaces, Oratories.


Special Needs and High Dependency Residential Accommodation, Horticultural Trainee Facilities/Training Kitchens, Farm Shops.

Sport and Leisure

Pool Spa and Locker Room facilities, International Standard Exhibition Squash Facilities, All Weather Surfaces.

Hotel and Restaurant

Bar & Commercial Kitchen Facilities, Health Clubs, Executive Training Centres, Pool & Spa facilities and Admin accommodation.

Commercial Retail and Industrial

High Street Retail, High Care Food Production Facilities, Light Engineering Facilities, Motor Trade Showrooms, Vehicle Servicing Bays.


our services


We have a proven track-record in achieving successful consents for sites with complex planning issues, Listed Building Consents, and demonstrating Very Special Circumstances in Green Belt and AONB’s for residential and commercial projects.

Design & Architecture

Design is at the core of our service, delivering striking and sustainable architectural solutions on challenging sites and to meet complex briefs, maximising land development values and building resources.  We undertake new build and refurbishment projects, and can offer expertise in technical and construction matters derived from years of building practice.

Contract Administration, Project & Construction Management, Turn Key Solutions

We are able to offer a wide variety of procurement routes including, fully designed traditional competitive tendered projects, design led Design & Build projects, Construction Management, Two Stage Tenders or turn key solutions.  Our focus is on delivering all projects on time and within budget.

Employer’s Agent

We are able to offer Employer’s Agent Services to Clients advising on the feasibility and procurement routes for development projects, assisting with consents, developing Employer’s Requirements, managing tendering and insurances, contract administration and overseeing quality control on site.  We have experience delivering projects within occupied premises and to restricted timescales, both of which can be of particular value to School and Retail Clients.

Health & Safety

We have experience acting as Principal Designer under the Construction (Design & Management) 2015 Regulations (CDM).


We have experience designing and in procuring sustainable projects complying with the highest Statutory and related standards including BREEAM, AECB, and Passivhaus.

Expert Witness

We are able to offer Expert Witness services and have represented Clients under cross examination at public enquiry.

Fire Risk Assessments

We are able to undertake fire risk assessments to meet the requirements of the Regulatory Reform (Fire Safety) Order 2005 for existing, refurbished/extended or new buildings.


‚Äčour projects 

Residential Development

Bespoke Residential 

Care & Charity

Residential Alterations & Extensions

Church & Ecclesiastical

School & Education

Sport, Leisure, Hotel & Restaurant/Public House

Retail & Commercial






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