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Classic London Victorian terraced house with bespoke dormer loft conversion and period detailing
Civils Consulting Ltd — Est. 2012Loft Conversions

Transform your attic into an extraordinary living space.

Bespoke dormer, mansard, and Velux loft conversions designed for London period homes — from initial architectural drawings and structural steel to local council planning approval.

Trading Since
2012
Planning Success Rate
95%
Disciplines, One Team
4
Areas We Cover
London & SE
01 / 05Loft Conversions
Quick Consultation• Fast 24h Turnaround

Tell us about your project.

Get an initial assessment and fixed-fee proposal from a chartered engineer within one working day.

Free initial reviewFixed-fee quoteNo obligation
About Us

A multidisciplinary engineering consultancy, trading in London since 2012.

Our work consists of designs for any building work, structural designs for building alterations, and appraisals of existing buildings in London and the surrounding areas. We work with developers, contractors, and builders, as well as building owners and users — from small domestic alterations and extensions to large commercial schemes, including multi-storey structures.

“We are qualified architectural and structural professionals with extensive experience in planning issues and building regulations, providing support all through the process of planning and building control approval.”
Modern loft conversion in a London Victorian home — structural timber beams and dormer windows
What We Do

Four disciplines, one accountable team

From first calculations to final sign-off, our civil, structural, architectural, and party wall teams work together on every project.

Civil Engineering icon

Civil Engineering

For Homeowners, developers, contractors, and building owners

Civil Engineering

Civil engineering design for extensions, conversions, new builds, and commercial schemes across London.

Project types
Rear DormerVeluxMansardHip-to-GableRear ExtensionSide Infill ExtensionDouble Storey ExtensionFlat ConversionsNew BuildsShopsBasements
Our Work

Featured Projects

Built work, active commissions, and technical studies across London and the South East.

Recent Case Studies in Curation

Our residential and commercial project photography and drawings are currently being compiled following completed local authority sign-offs. In the meantime, explore our four core engineering disciplines or contact our office directly to discuss comparable project references in your borough.

Our Approach • Step-by-Step

A clear, simple process from first call to finished plans

Every project moves through the same steps, regardless of scale — so you always know what happens next.

01
Step 01 of 06FREE, NO-OBLIGATION

A Phone Call

“It starts with a conversation”

Call us and tell us what you're planning — we'll talk through your site and what you're hoping to achieve.

Call Us: +44 20 3006 2478Direct to our office
Initial introductory phone consultation with an architect in a London studio with project sketches
STAGE 01 // FIRST CONTACT
02
Step 02 of 06FREE, NO-OBLIGATION

Free Consultation

“Understanding what you need”

We give honest, practical advice from the outset, so you know what's possible before committing to anything.

Book a Free ConsultationFree & no obligation
In-person consultation in a London home reviewing architectural site plans with homeowner
STAGE 02 // CONSULTATION
03
Step 03 of 06FIRST DRAFT

Initial Design Scheme

“The first draft of your project”

A first design scheme, based on your consultation, for you to review and respond to.

Architect drafting initial floor plans and spatial sketches with scale ruler on drafting paper
STAGE 03 // DESIGN
04
Step 04 of 06FINAL SCHEME

Final Design Scheme

“Refined until you're happy”

We work through revisions with you, making changes until you're happy with the final scheme we'll take forward.

Architect refining 3D digital model and architectural sections with material samples
STAGE 04 // DESIGN
05
Step 05 of 06SUBMITTED & MANAGED

Submissions to Local Authority

“Handling the paperwork”

We prepare and submit your planning application, liaising directly with the local authority on your behalf throughout.

Technical planning application documentation and drawing sets submitted to the local authority
STAGE 05 // PLANNING
06
Step 06 of 06READY TO BUILD
Ready to Build

Plans Approved

“Ready to build”

Once your plans are approved, we're on hand for the build calculations and drawings your contractor needs to get started.

Approved structural engineering plans and construction-ready steel beam framing
STAGE 06 // APPROVED

Approved plans & calculations in hand

Ready to begin? Contact our team for initial consultations and quotes.

Contact Us / Get Started
Watch

See how we work

Fixed-Fee Packages

Clear scope, no surprises

Every package covers the same design and planning process, start to finish — talk to us for a fixed-fee quote tailored to your project.

Modern London Victorian loft conversion with pitched timber beams and dormer window
PLAN01
Dormer, mansard & velux roof conversions

Loft Conversion

Fee Structure

Fixed fee on quote

No hidden costs
Project types:
Rear dormersVelux conversionsMansardHip-to-gable
Included in this package:
  • Full measured survey
  • Architectural consultation
  • Development of design options
  • Planning application management
  • Amendments requested by the local authority
Modern London rear ground-floor kitchen extension with Crittall glass doors and courtyard garden
PLAN02
Most Requested
Rear, side-return & wraparound extensions

Extension

Fee Structure

Fixed fee on quote

No hidden costs
Project types:
Rear ExtensionsSide Infill extensionDouble Storey Extensions
Included in this package:
  • Full measured survey
  • Architectural consultation
  • Development of design options
  • Structural design for the extension shell
  • Planning application management
  • Amendments requested by the local authority
Full London Victorian house transformation showing contemporary glass extension and zinc dormer loft
PLAN03
Complete multi-storey residential transformation

Loft Conversion & Extension

Fee Structure

Fixed fee on quote

No hidden costs
Project types:
Rear dormers & mansardsRear, side infill & double storeyCombined whole-house schemes
Included in this package:
  • Full measured survey
  • Architectural consultation
  • Development of design options
  • Structural design for both projects
  • Planning application management
  • Amendments requested by the local authority
Journal

Insights & Guides

Practical notes on planning, party wall matters, and construction costs.

Technical Insights Coming Soon

Our engineering and architectural team is preparing in-depth guides covering UK planning permissions, structural calculations for wall removals, and party wall notice procedures. Check back soon or contact our engineers for guidance on your specific project.

Get In Touch

Tell us about your project.

From residential extensions and loft conversions to complex structural calculations and party wall awards, our chartered engineers provide expert guidance and transparent, fixed-fee proposals within one working day.

Civils Consulting Ltd

45 Victoria Road
London, England, E18 1LJ

[email protected]+44 20 3006 2478 (Office)+44 7947 249323 (Mobile)