Realise your
big plans

From planning applications to building regulations and construction delivery, TDO Design provides staged architectural and project management services to take your project from concept to completion.

Barton Rise extension and refurbishment exterior in Devon

We make building design straight forward & enjoyable

TDO Design is led by Ben Marlow a Chartered Architectural Technologist and Chartered Construction Manager with over 25 years’ experience delivering residential, commercial, rural and heritage projects across Devon, Somerset and Dorset.

We specialise in planning applications, technical design for Building Regulations and support through the construction stage. Our staged service allows you to engage the level of input you need — from planning drawings to full project delivery.

You’re in safe hands, we’re accredited and recognised by:

Core services

Typically, our projects are domestic planning applications but more recently we’ve been getting involved in some exciting commercial projects locally.

Whether domestic or commercial, choose the service that’s right for you.

Planning Applications

We prepare clear, well-considered planning applications across residential, rural and commercial projects, including retrospective planning applications. We manage the process from initial feasibility and design development through to submission and determination, liaising directly with planning and conservation officers throughout.

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Building Regulations & Technical Design

Preparing detailed Building Regulations drawings and specifications and submissions to Building Control. This enables accurate pricing and compliant construction. We develop buildable solutions that respond to site constraints and project budgets.

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Listed Building Consent Applications

LBC applications are complex. We prepare clear, well-considered Listed Building Consent applications for extensions, alterations, conversions. We manage the process from feasibility and design through to submission and liaison with the Local Authority and Conservation Officer.

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Contract Administration & Project Management

Complete client support during construction through contract administration or full project management. We help procure contractors, sub-contractors and specialist suppliers, prepare a detailed breakdown of costs, oversee works on site and manage delivery to achieve quality, cost control and programme objectives.

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Why choose TDO Design

Planning-led expertise

Strong knowledge of the planning system, rural development and listed buildings.

Technical and buildable design

Solutions developed with construction practicality and cost in

Construction delivery capability

Construction management expertise to ensure you stay in full control of your build.

Staged service flexibility

Engage at planning, Building Regulations or build stage — or throughout.

We work across:

  • Extensions and alterations
  • Barn conversions and rural buildings
  • Listed and heritage properties
  • New dwellings and replacement dwellings
  • Small residential developments
  • Commercial refurbishments and builds

Most clients begin with the planning stage. We can then continue through to the Building Regulations stage and then Project Management if you prefer to have your project managed by us.

If you are considering a project, we can advise on feasibility, planning strategy and next steps.

Oak-frame extension at Hunthayes
  • Let’s realise your big plans.

    Tell us more about your project

  • At TDO we deliver architectural services, bringing together building design, planning applications, building regulations, and even managing builds through to completion.

  • © 2023 The Drawing Office (SW) Ltd
    The Studio, Buckerell House
    Buckerell, Nr Honiton, Devon EX14 3EJ