London homeowners need architects experienced in both single and double storey extension. Each type requires different expertise. Each has different planning implications. Each costs differently. Understanding what architects offer for both types helps you choose the right professional. Single and double storey extensions solve different space problems. Understanding which suits your property matters. Experienced architects guide you through this decision and deliver excellent results.
Architectural Design for Single Storey Extensions in London
Single storey extensions are popular in London. They’re more affordable than double storey. They’re often easier to get Planning Permission for. They solve genuine space problems.
London architects design single storey extensions for kitchens, living rooms, bedrooms, offices, and garden rooms. Each type requires different design approaches. Kitchen extensions need proper plumbing and ventilation. Living room extensions need good light and connection to existing spaces. Bedroom extensions need privacy and comfort. Office extensions need quiet, professional environments.
Architects assess existing properties. They understand building character. Victorian terraces need different design approaches than Edwardian semis. Modern apartments need different solutions than period cottages.
They design within Permitted Development limits when possible. Four meter depth limits. Fifty percent garden coverage limits. Height restrictions. Understanding these constraints allows efficient design within limits, avoiding unnecessary Planning Permission delays.
When Planning Permission is needed, architects design sympathetically. Design must respect neighborhood character. Materials must match existing. Proportions must work. Architects understand what London Planning Committees approve.
Good design considers light, views, and connection to gardens. Bifold doors create seamless flow. Rooflights bring daylight inside. Windows are positioned strategically. Extensions enhance daily life.
Architects also manage costs effectively. Simple rectangular extensions cost less than complex shapes. Standard materials cost less than premium options. Budget finishes cost less than luxury finishes. Architects help you maximize space within budget constraints.
Expert Planning of Double Storey Extensions for London Homes
Double storey extensions are more complex. They add significantly more space. They require Planning Permission almost always. They require careful structural design. They’re more expensive than single storey.
Double storey extensions solve major space problems. They add multiple rooms. They transform how properties work. They increase property value substantially.
London design and build architects double-storey extensions for properties with sufficient space and budget. These extensions require:
Careful structural engineering. Load paths must work properly. Foundations must support additional weight. Roof structure must integrate correctly. Architects coordinate with structural engineers.
Thoughtful design respecting neighborhood character. Visual impact is significant. Design must complement existing buildings. Materials must work. Proportions must be appropriate.
Detailed planning navigation. Planning Permission takes 8 to 12 weeks. Design revisions often needed. Architects manage this process. They anticipate Planning Committee concerns. They design accordingly.
Building Regulations compliance. Double storey extensions have complex technical requirements. Fire safety matters. Structural safety matters. Insulation standards matter. Architects ensure compliance throughout.
Cost management. Double storey extensions are expensive. Budgets are significant. Architects help maximize value. They design efficiently. They manage costs throughout.
Costs, Permissions, and Design Considerations in London
Single storey extensions in London typically cost 1800 to 2500 per square meter. For 30 square meters, total project cost runs 70000 to 100000 including all fees.
Double storey extensions cost significantly more. Typically 2800 to 4500 per square meter. For 40 square meters, total project cost runs 130000 to 200000 including all fees.
Planning Permission costs extra. Application fees. Professional design fees. Revisions sometimes needed. Total planning costs typically run 3000 to 8000.
If Permitted Development applies, Planning Permission is avoided entirely. This saves months and thousands in costs.
Design considerations include building character, neighborhood context, ground conditions, existing utilities, and budget constraints. Different properties need different approaches. Architects assess all these factors.
Period properties need sensitive design respecting original character. Modern properties allow more contemporary design freedom. Terraced properties have different constraints than detached homes.
| Extension Type | Typical Cost | Planning Required | Timeline | Design Focus |
| Single Storey | £70-100k | Usually | 5-8 months | Character respect |
| Double Storey | £130-200k | Always | 8-12 months | Visual harmony |
| Wrap-Around | £100-150k | Usually | 7-10 months | Space optimization |
| Period Property | +10-20% | Often complex | +2-4 weeks | Heritage sensitivity |
| Modern Property | Base cost | Sometimes | Standard timeline | Contemporary design |
| Permitted Dev | Same cost | No | 4-6 months | Within limits |
Tailored Architecture for Period and Modern Properties
Period properties require sensitive design. Victorian terraces, Edwardian semis, Georgian townhouses. Each period has distinctive character.
Extensions must respect period detail. Materials should match existing. Proportions should work with original architecture. New work should look intentional, not added. Architects understand period-appropriate design.
Modern properties allow different design approaches. Contemporary materials work. Modern design principles apply. Architects design for contemporary living while respecting neighborhood context.
Terraced properties have specific constraints. Limited side space. Shared walls with neighbors. Different foundation requirements. Architects understand these constraints.
Detached properties allow more design freedom. Space available. No party wall issues. More options for extensions. Architects help clients maximize possibilities.
Semi-detached properties fall between terraced and detached. Slightly more constraints than detached. More flexibility than terraced. Architects design accordingly.
Why Clients Choose Extension Architecture for Single and Double Storey Projects
Extension Architecture works with both single and double storey projects. They understand London neighborhoods thoroughly. They know Planning Committees. They navigate conservation rules expertly.
They assess which type suits your property. Single or double storey. They recommend the best approach. They explain pros and cons. They help you decide.
They provide transparent design process. You understand decisions. You’re involved throughout. There are no surprises.
They deliver quality outcomes. Extensions look right on properties. They function beautifully. They add value. They get approved efficiently.
They manage projects professionally. Regular site visits ensure quality. Communication is clear. Problems are solved collaboratively. You know what’s happening.
For your London single or double storey extension, Extension Architecture provides expertise you need. They understand your neighborhood. They design solutions that work. They manage the entire process professionally from concept through completion.
