SERVICE PORTFOLIO
Extensions
Rear, side-return, and wraparound extensions delivered with refined glazing, coordinated structural work, and considered transitions to the garden. Picassa Renovations shapes each extension around the character of the property and the way its occupants live, creating spaces that feel resolved, intentional, and naturally connected to the existing home.

WHY PICASSA RENOVATIONS
Extension expertise shaped around your home.
Neighbour Coordination
Extension projects require careful neighbour management, site discipline, and compliance with applicable planning and Party Wall requirements. We coordinate the work considerately, helping minimise disruption and maintain clear communication throughout construction.
Glazing Strategy
The quality of the glazing, frame detailing, and connection to the garden can define the entire extension. We coordinate these elements carefully to balance natural light, views, thermal performance, privacy, and architectural character.
Material Continuity
An extension should feel like a natural part of the property. We coordinate flooring, finishes, materials, proportions, and architectural details so the new and existing spaces work together seamlessly.
THE BUILD PROCESS
From concept to seamless addition
01. SITE ANALYSIS
We assess the property, garden orientation, access, neighbouring buildings, existing services, and planning constraints. These findings help establish the most appropriate direction, scale, and construction approach for the extension.
02. DESIGN DEVELOPMENT
Working with the appointed design team, we help develop an extension that complements the property’s character while improving light, space, and everyday functionality. Rear, side-return, and wraparound solutions are considered with careful attention to proportion and flow.
03. PLANNING & BUILDING REGULATIONS
We help coordinate permitted-development assessments, planning applications, Building Regulations, and relevant technical approvals. Identifying these requirements early supports a smoother progression into construction.
04. STRUCTURAL & SERVICES DESIGN
Structural engineers develop the necessary support solutions, while mechanical, electrical, and plumbing specialists plan the heating, lighting, power, drainage, and water services. All disciplines are coordinated before and during construction.
05. CONSTRUCTION & INTEGRATION
Site work is managed with technical discipline and consideration for the occupied property. We coordinate the structure, glazing, services, flooring, finishes, and architectural details so the new extension integrates naturally with the existing home.
06. COMPLETION
Final inspections, testing, certification, and detailed snagging ensure the new space is complete and ready to use. The relevant warranties, manuals, certificates, and project documentation are provided at handover.
KEY CONSIDERATIONS
What to know before starting.
Direction & Orientation
Orientation influences the natural light, temperature, views, and atmosphere of an extension. We consider the existing layout, garden position, glazing, privacy, and the movement of daylight when coordinating the most suitable approach.
Neighbour Relations
Party Wall procedures and neighbour consultation may be required depending on the proposed work. Early communication and proper professional coordination can help prevent unnecessary delays and maintain positive relationships throughout the project.
Budget & Timeline
Many residential extensions require approximately 10–14 weeks for construction, but the programme will depend on the size, complexity, structural work, access, specification, approvals, and material lead times. We provide a project-specific programme and transparent cost structure before work begins.
SERVICE VARIANTS
Types of extensions
Different extension approaches designed around the property’s existing layout, available land, architectural character, and the client’s lifestyle.
1
Rear Extension
An extension constructed at the back of the property, commonly used to create a larger kitchen, dining area, family room, or open-plan living space with a stronger connection to the garden.
WHY CHOOSE THIS
A practical way to increase living space, natural light, and garden access. It is particularly effective for households seeking a more generous kitchen and social area.
4
Infill Extension
The enclosure or redevelopment of an underused area—such as a courtyard, covered passage, porch, or space between existing structures—to create additional internal accommodation.
WHY CHOOSE THIS
An efficient way to maximise the property’s existing footprint. It can provide additional kitchen space, a utility room, study, entrance area, or other practical accommodation.
2
Side-Return Extension
An extension built into the narrow passage alongside the existing property, increasing the internal floor area without necessarily using a significant portion of the rear garden.
WHY CHOOSE THIS
Well suited to terraced and semi-detached properties with underused side space. It can widen narrow kitchens and create a brighter, better-connected ground-floor layout.
5
Double-Storey Extension
A two-storey addition that increases the available floor area across multiple levels, commonly providing expanded living spaces below and additional bedrooms or bathrooms above.
WHY CHOOSE THIS
A strong option for households requiring significant additional accommodation without moving. It makes efficient use of the available footprint while adding space across two floors.
3
Wraparound Extension
A combined side-return and rear extension that creates an L-shaped addition and delivers a substantial increase in usable ground-floor space.
WHY CHOOSE THIS
Ideal for properties with suitable side and rear space. It can transform the entire ground-floor arrangement while preserving a considered connection to the garden.
6
Glazed Extension
A modern extension featuring generous glazing, slim-framed doors, rooflights, and carefully selected contemporary materials to create a bright connection between the interior and garden.
WHY CHOOSE THIS
Ideal for clients prioritising natural light and a distinctive architectural expression. Thoughtful glazing can create openness while maintaining thermal efficiency, privacy, and year-round comfort.
COMMON QUESTIONS
Extension FAQs
BEGIN WITH A PRIVATE BRIEF
Planning a residential extension project?
Share the property type, desired scope, location, approximate timeframe, and whether drawings or planning documents already exist. We will respond with a considered next step.
PICASSA RENOVATIONS
