"Building a sense of belonging" means creating spaces where people feel comfortable being themselves. This applies whether we're designing a home, a restaurant, or public infrastructure.

In residential projects, it means understanding your personal story—your history, values, daily rituals—and translating that into architecture that reflects who you are. For our Gibraltar clients at Arch House, belonging meant creating Mediterranean references (structural arches, warm materials) within a London context.

In public projects like the Clapham Gateway bridge, belonging means honoring community heritage (Windrush arrivals, local history) through co-created murals and design that serves neighborhoods with dignity.

We achieve this through deep listening at the project's start, collaborative design, and commitment to timeless quality rather than trending styles.

Four things distinguish our practice:

1. Philosophy-led approach: We're guided by "building a sense of belonging" rather than a house style. Every project reflects the client's story, not our signature aesthetic.

2. Four principles: Storytelling (understanding your narrative), Problem Solving (balancing quality/cost/time), Value Creation (delivering what matters to you), and Self-Builds as R&D (testing ideas before client application).

3. Cross-sector range: We work across homes, hospitality, cultural institutions, and public realm projects. This breadth informs each sector—lessons from public realm wayfinding improve residential circulation, hospitality materials enhance home warmth.

4. Self-invested learning: Cork House and Pine House aren't just portfolio pieces. They're laboratories where we test materials and approaches on our own investment before recommending them to clients.

Sustainability at Polysmiths means material innovation, lifecycle thinking, and avoiding greenwashing.

Cork House demonstrated that carbon-negative materials can be beautiful, practical, and affordable. We continue exploring sustainable materials through self-build R&D rather than experimenting on client budgets.

Our approach:

- Material selection: Prioritize carbon-sequestering or low-embodied-carbon materials (cork, timber, reclaimed materials)

- Lifecycle thinking: Design for longevity, adaptability, and eventual reuse rather than demolition

- Heritage sensitivity: Renovating existing buildings is inherently sustainable—we embrace Victorian terrace typologies rather than demolishing them

- Honest assessment: We avoid superficial "green" features with high maintenance costs, preferring durable, passive strategies

We believe timeless design is sustainable design. Architecture that people love doesn't get demolished.

Yes. While residential projects are currently our largest sector, we're deliberately building our public realm portfolio across hospitality, cultural, and infrastructure projects.

Recent public work includes:

- South Kensington Gallery: Flexible cultural space with movable walls, acoustic design, and museum-quality lighting

- Bloomsbury Aparthotel: Georgian townhouse conversion to boutique aparthotel (in progress)

- Clapham Gateway: Public realm bridge competition shortlist featuring community co-creation and heritage storytelling

We're particularly interested in working with independent hospitality operators (restaurants, boutique hotels), cultural institutions (galleries, museums, community centers), and public realm projects that strengthen neighborhood identity.

Architectural services for a new build home in London include comprehensive support from initial concept through construction completion, typically following RIBA work stages.

At Polysmiths, our services include:

Stage 0-1: Strategic Definition & Preparation

Understanding your story, vision, and values. We begin every project by listening—what matters to you, how you want to live, what "home" means to your family. This storytelling phase shapes the entire design.

Stage 2: Concept Design

Developing spatial concepts that reflect your narrative. We explore how architecture can create a sense of belonging—spaces where you're comfortable being yourself. This includes initial sketches, spatial studies, and material directions.

Stage 3: Spatial Coordination (Planning)

Detailed design development, planning application preparation and submission, coordination with planning authorities and heritage officers (if applicable), and navigating conservation area requirements.

Stage 4: Technical Design

Construction drawings, specifications, material selection and detailing, coordination with structural engineers and building control, and contractor tender package preparation.

Stage 5-7: Construction

Site inspections, contractor coordination, problem-solving as issues arise, material verification, and quality control through completion.

Our approach balances quality, cost, and time within real-world constraints. We work with trusted collaborators (engineers, contractors, specialists) to solve your specific challenges rather than imposing a house style.

For new builds, we often incorporate lessons from our self-build R&D projects—Cork House and Pine House—where we test materials and approaches before introducing them to client work.

Typical project duration: 12-18 months (6-9 months design/planning, 6-9 months construction)

Typical project budgets: £500k-£1M+ for new builds in London

Choosing a home extension architect in London requires considering both technical capability and cultural fit. We recommend evaluating architects across six criteria:

1. Philosophy & Approach

Look beyond portfolio aesthetics. Does the architect have a clear design philosophy? At Polysmiths, we're guided by "building a sense of belonging"—creating spaces that reflect who you are. Ask potential architects: "What principles guide your work?" If they can't articulate a clear philosophy beyond "creating beautiful spaces," that's a red flag.

2. Relevant Experience

For Victorian terrace extensions, listed building work, or heritage conservation, verify specific experience in these areas. Review past projects in similar contexts (building type, planning constraints, budget range). At Polysmiths, our work spans Victorian terraces (Arch House), listed buildings (Kensington Apartment), and contemporary infills (Cork House).

3. Process & Collaboration

Understand how the architect works. Do they collaborate with trusted engineers and contractors? How do they handle budget and time management? We operate on four principles: Storytelling (understanding your narrative), Problem Solving (balancing quality/cost/time), Value Creation (delivering what matters to you), and Self-Builds as R&D (testing approaches before client application).

4. Budget Alignment

Be honest about your budget early. Architects specializing in £200k projects approach design differently than those working at £500k+. We typically work with clients on projects from £500k to £1M+, where material quality and spatial refinement justify the investment.

5. Communication Style

You'll work with your architect for 12-24 months. Do you enjoy talking with them? Do they listen carefully or talk over you? Do they explain technical issues clearly? Architecture is ultimately about people management—clients, engineers, planners, contractors. Choose someone who makes the process engaging rather than stressful.

6. Professional Credentials & Recognition

Verify ARB registration (legal requirement to call yourself an "architect" in the UK) and RIBA membership. Consider awards and recognition—not as proof of aesthetic superiority, but as evidence the practice delivers well-executed projects. We're RIBA London Award shortlisted (Cork House, 2023) and Clapham Gateway Competition shortlisted (2025).

The cost of hiring an architect in London typically ranges from 8% to 15% of your total construction budget, depending on project complexity and scope of services.

Fee Structure Breakdown:

For residential projects in London:

- Simple renovations with limited structural work: 8-10% of construction cost

- House extensions with planning applications: 10-12% of construction cost

- Listed building renovations with heritage constraints: 12-15% of construction cost

- New builds or complex projects requiring extensive coordination: 12-15% of construction cost

At Polysmiths, our fees are 12-15% for most projects, reflecting our comprehensive service and collaborative approach. We work on projects typically ranging from £500k to £1M+ construction budgets, meaning architectural fees of £60k-£150k depending on scope.

What This Covers:

Our fees include all design work from initial concept through construction completion (RIBA stages 0-7), planning application preparation and submissions, coordination with structural engineers and consultants, construction drawings and specifications, site inspections throughout construction, problem-solving and design adjustments during build, and final completion and handover.

Crucially, our approach emphasizes value creation—delivering what matters to you within realistic constraints. We're not style-makers; we're problem-solvers. Every project balances quality, cost, and time.

Alternative Fee Structures:

Some architects offer:

- Hourly rates (£100-£200/hour): Suitable for consultations or limited scope work

- Fixed fees: Agreed lump sum (requires well-defined scope)

- Percentage of construction cost: Most common for residential work (what we use)

Hidden Costs to Consider:

Beyond architectural fees, budget for:

- Structural engineer fees: 2-4% of construction cost

- Planning consultant (if needed): £3k-£8k

- Party wall surveyor (if applicable): £2k-£5k

- Building control fees: £1k-£3k depending on project size.

The cost of a full house renovation in London—the type of project we typically undertake at Polysmiths—ranges from £300,000 to £1,000,000+ for complete refurbishments that transform your home.

We don't work on isolated kitchen extensions or single-room renovations. Our clients come to us for comprehensive projects: full house refurbishments, listed building renovations, or significant reconfigurations that reimagine how a home works.

Cost Per Square Metre Guidelines:

As a planning benchmark, expect:

- £2,500-£3,000/sqm: Good quality renovation with standard specifications

- £3,000-£3,500/sqm: High-quality renovation with thoughtful material choices

- £3,500-£4,500/sqm: Exceptional specification with bespoke elements, premium materials, and craft detailing

These rates exclude VAT, architectural fees (12-15% of construction cost), structural engineering fees (2-4%), and often exclude bespoke joinery, premium finishes like natural stone or solid timber flooring, and client-supplied items like kitchen appliances.

For a typical 150-200 square metre London house requiring full renovation, you should budget:

- Construction cost: £450,000-£900,000 (depending on specification level)

- Total project cost including all fees and finishes: £600,000-£1,200,000

What Affects Cost:

Higher costs result from listed building status requiring heritage materials and specialist contractors, significant structural work like opening up floor plans or underpinning, bespoke joinery designed specifically for your home, premium natural materials, and complex site access in central London.

Our approach at Polysmiths is about value creation, not cost minimization. We work with clients who understand that good architecture is an investment—creating spaces that reflect who you are, that you'll love living in for decades.

We balance quality, cost, and time through careful material selection, collaboration with trusted contractors who deliver consistent quality, value engineering where appropriate (like using structural