Architectural & Planning Glossary

Understanding architectural terminology, planning procedures and building regulations can feel complex at the early stages of a project. This glossary explains key terms commonly used in residential and commercial architectural projects across Shropshire, Cheshire and surrounding areas.

If you would like advice tailored to your own property or development, ARH Architectural Design is happy to provide professional guidance.

A

What Is an Agricultural Unit?

An agricultural unit refers to a building or structure used for farming purposes, such as storage barns, livestock housing, or machinery sheds. Planning requirements for agricultural buildings vary depending on size, location and whether permitted development rights apply. In rural areas of Shropshire and Powys, careful assessment is often required before construction begins.

B

What Is a Barn Conversion?

A barn conversion involves transforming an agricultural building into a residential or commercial space. These projects require careful consideration of planning constraints, structural condition, and design to retain the building’s character while meeting modern standards. In many rural areas of Shropshire, Cheshire and Powys, barn conversions may fall under Class Q permitted development rights, although eligibility depends on factors such as prior use, structural condition, and location. Where permitted development does not apply, a full planning application is required.

What Is Building Control?

Building Control is the department within a local authority responsible for ensuring that construction work complies with current Building Regulations. They review technical drawings, carry out site inspections, and issue completion certificates once works meet statutory standards. Early coordination with Building Control helps avoid delays during construction.

What Are Building Regulations?

Building Regulations are statutory requirements that ensure buildings are structurally sound, safe, energy efficient and accessible. Approval is required before construction begins, and detailed technical drawings must demonstrate compliance. In Shropshire and Cheshire, Building Control approval is a separate process from planning permission and should not be overlooked.

C

What Is Change of Use?

A Change of Use application is required when a building’s function is altered, such as converting agricultural premises into residential dwellings or transforming a commercial property into housing. Local planning authorities assess the impact on the surrounding area before granting approval. Professional preparation of drawings and supporting documentation increases the likelihood of a smooth approval process.

What Is a Conservation Area?

A Conservation Area is a designated location recognised for its architectural or historic interest. Properties within these areas are subject to additional planning controls to preserve their character and appearance. Many towns across Shropshire and Cheshire contain Conservation Areas, requiring careful design consideration for extensions or alterations.

What Is Concept Design?

Concept Design is the initial stage of an architectural project where ideas are developed into preliminary drawings. This phase explores layout, scale, style and feasibility before progressing to detailed submissions. A well-developed concept ensures that the project aligns with both the client’s vision and local planning policies.

D

What Are Detailed Drawings?

Detailed drawings provide the technical information required for Building Regulations approval and construction. They include structural layouts, material specifications and compliance details. Accurate and coordinated drawings reduce construction errors and support a smoother building process.

E

What Are Extensions?

An extension is an addition to an existing property that increases its internal space or footprint. This may include single-storey, two-storey or side and rear extensions. In many residential areas of Shropshire, extensions require a Householder Planning Application unless they fall within permitted development criteria.

F

What Is a Feasibility Study?

A feasibility study assesses the viability of a proposed development before design work begins. It considers factors such as planning constraints, site conditions, budget considerations and design potential. Undertaking a feasibility study early helps identify risks, avoid costly redesigns, and establish a clear direction for the project.

What Is a Full Planning Application?

A Full Planning Application is a formal submission to the local authority seeking approval for development proposals. It includes architectural drawings, site plans and supporting documentation. Decisions are based on local planning policies and the proposal’s impact on neighbouring properties and the surrounding environment.

H

What Is a Householder Planning Application?

A Householder Planning Application applies specifically to alterations or extensions to a single dwelling. This type of application is common for residential extensions, loft conversions and significant external alterations. Preparing accurate drawings and planning statements improves the clarity of the submission to local councils.

L

What Is a Listed Building?

A Listed Building is a property recognised for its historic or architectural significance and protected by law. Any alterations that affect its character require special consideration. Shropshire and Cheshire contain numerous listed properties, each subject to specific heritage protections.

What Is Listed Building Consent?

Listed Building Consent is formal approval required before carrying out alterations to a listed property. Even minor changes can require consent if they affect historic fabric or character. Applications must demonstrate sensitivity to the building’s heritage significance and often require detailed supporting drawings.

What Is a Loft Conversion?

A loft conversion involves transforming an existing roof space into usable living accommodation, such as a bedroom, office or additional living area. These projects are common in residential properties where expanding outward is not feasible. Depending on the scale and design, loft conversions may fall under permitted development rights or require a Householder Planning Application. Structural design, insulation, fire safety and access are key considerations during the design process.

N

What Is a New Build?

A New Build project involves the design and construction of a completely new property, either as a single bespoke dwelling or as part of a small residential development. These projects require full planning approval and detailed Building Regulations documentation. Careful coordination from concept to completion ensures a practical and compliant outcome.

P

What Is a Party Wall Agreement?

A Party Wall Agreement is a legal document required when building work affects a shared wall or boundary between neighbouring properties. This typically applies to extensions, loft conversions and structural alterations. The process involves notifying adjoining owners and agreeing on how work will be carried out. Early awareness of Party Wall requirements helps prevent delays once construction is underway.

What Is Permitted Development?

Permitted Development rights allow certain types of minor building work to proceed without full planning permission, subject to specific size and design limitations. These rights vary depending on property type and location. Professional assessment is recommended to confirm eligibility before work begins.

What Is Planning Permission?

Planning Permission is formal approval granted by a local authority allowing development to proceed. The process assesses how a proposal fits within local planning policies and its impact on the surrounding area. Securing permission is often the most critical early milestone in any architectural project.

What Is a Planning Statement?

A Planning Statement is a supporting document submitted alongside a planning application. It explains how a proposal aligns with local planning policies and addresses potential concerns. A well-prepared statement strengthens the overall submission and clarifies the design rationale.

S

What Is a Site Survey?

A site survey is the process of accurately measuring an existing property and its surroundings to produce existing drawings. These drawings form the foundation for all design work, ensuring that proposals are accurate and aligned with real-world conditions. A thorough site survey reduces the risk of design errors and ensures a smoother progression through planning and construction stages.

What Is a Structural Engineer?

A Structural Engineer is a qualified professional responsible for designing and calculating load-bearing elements within a building. Their work ensures that structures are stable and compliant with regulations. Architects frequently collaborate with structural engineers to coordinate safe and practical construction solutions.

T

What Is Technical Design?

Technical Design is the stage where approved concept drawings are developed into detailed construction information. This phase ensures compliance with Building Regulations and provides contractors with clear build instructions. Thorough technical design reduces risk during construction and supports accurate project delivery.

W

What Are Working Drawings?

Working Drawings are the finalised architectural drawings issued for construction. They include dimensions, materials and construction details necessary for contractors on site. Clear and comprehensive working drawings help ensure that the finished project reflects the original design intent.

If you require further clarification on any of these terms or would like professional advice regarding your project in Shropshire, Cheshire or the surrounding areas, ARH Architectural Design can provide tailored guidance based on your specific property and planning context.