Know Before You Buy

Fast, developer-focused feasibility reports for smarter site acquisitions

Built on planning insight, financial logic, and AI-enhanced modelling

What We Do

One studio. Three services. Full clarity.

Pre-Acquisition Feasibility

We assess sites fast combining planning insight, financial logic, and spatial strategy.
You’ll get a detailed report covering context, viability, risk, and strategic recommendations.
Turnaround: 48 – 72 hours

Site Potential Studies

What can this site really deliver?
We model massing, test unit mix, and assess development density and use.
All backed by commercial insight and real-world planning experience

Landowner Partnerships

We work with landowners to secure planning, increase land value, and share in the uplift.
You bring the land – we bring the know-how

Our Process

1 Send Us the Site

Postcode, redline boundary, or agent’s brochure that’s all we need to get started.

We Start with the Numbers

We define the minimum GIA needed for a viable scheme and test multiple exit strategies from day one.

2 We Assess the Potential

We combine site context, planning insight, spatial logic and financial modelling into a single, developer-focused feasibility report.

Can It Fit?

We run a high-level spatial test – can the required GIA realistically fit on-site, given planning policy and context?

3 You Make a Smarter Move

Proceed, renegotiate, or walk away: make your next move with clarity and confidence.

We Help You Decide Fast

If the site stacks – we move to full feasibility and spatial design.
If it doesn’t – we deliver a clear summary and refund 50% of the spatial design fee.

We don’t pursue unviable sites. If the fundamentals don’t support development, we provide clear guidance and help you refocus on higher-potential opportunities - without wasting time or resources

Inside the Report

Our reports follow a clear structure designed to answer the questions developers actually ask.

If a site doesn’t stack up, we don’t push it and we refund 50% of the fee for the spatial design stage to save your time and money.

I. Executive Summary

Key viability verdict. Top-line metrics. Optimal strategy.

II. Assessment Methodology

We outline our integrated process - combining planning, design, and finance from day one.

III. Site Context & Development Opportunity

Where is it, what surrounds it, and what’s possible in policy terms?

IV. Planning Overview

We review planning history, constraints, precedents and relevant local and national policies.

V. Spatial Testing & Key Metrics

We test multiple design strategies for GIA/NSA, density, mix, and efficiency.

Example: 28 units over 2,517 sq m GIA | 80.2% Efficiency | 3 studios, 13 x 1-bed, 8 x 2-bed, 4 x 3-bed

VI. Financial Analysis

Detailed cost and value modelling for BTR and Build & Sell scenarios.

Example: GDV £11.79M | Optimised Build Cost £10.05M | 14.6% Profit on Cost

VII. Exit Strategy Assessment

We benchmark different outcomes: BTR, Build & Sell, Hold.

Optimal Exit: BTR (Yield on Cost 5.1%, ROI 36.8% over 5 years)

VIII. Risk Analysis

Planning, design, cost, and delivery risks - flagged and scored.

IX. Conclusions & Recommendations

Your go/no-go decision, backed by evidence. Plus, value enhancement strategies.

Case Studies

Woking Goldsworth Arms Site

100 Units | Mixed-Use

GDV: £34.8M | IRR: 18.6% | POC: 14.7%

Planning Risk: tight constraints limit capacity

Land value is too high: site is not recommended

Eltham High Street

28 units | Mixed-use

80.2% Efficiency

GDV: £11.8M | BTR ROI: 36.89%

Optimal Strategy: Build to Rent

Beavers Lane

9 Units | Residential

RoE: 25.18%

Key Risk: Planning & MMC delivery

Optimal Strategy: BTR with MMC potential

Why ViableSite?

We use data, design, and developer logic.

We don’t just draw buildings . We test viability before a single massing diagram is made.

→ Financial logic drives our process
→ AI-enhanced tools help us work fast and spot red flags early
→ As precision demands grow, we involve our network of QS, planners, PMs, and development consultants

If the site doesn’t stack, we’ll say so and won’t waste your time or budget

Who We Are

Architects who think like developers

Founded by the team behind KAR Studio & to-do.design, ViableSite bridges the gap between design vision and financial logic.
We’ve worked on dozens of urban infill, airspace, and mixed-use schemes – we understand what makes a site commercially viable, and we’ll tell you quickly if it’s not.

Kira Arisksina & Richard Tremeer Chartered Architects and founding directors of KAR Studio and to-do.design

How We Deliver

We don’t work alone

To give you fast, grounded answers, we collaborate with trusted delivery partners who bring deep, hands-on expertise across the development lifecycle:

[Planning Consultancy Name] – Planning Strategy & Policy Alignment

[QS Firm & Project Management Name] – Quantity Surveying, Cost Strategy & Procurement

[Development Management Co.] – Development Strategy & Financial Structuring

Our Tech Partners & Data Sources

Kira Arisksina & Richard Tremeer Chartered Architects and founding directors of KAR Studio and to-do.design

What Our Clients Say

"I had no idea the potential of my site until Viable Site broke it down. They didn’t overpromise. They showed exactly what could work and what couldn’t. We’re now moving ahead with a JV and I finally feel in control of the process."

Contact Us

info@viablesite.co.uk

+442039293813

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