# Callender Howorth Interior & Architectural Design

Callender Howorth Interior & Architectural Design is an interior designer in Saint-Jerome, QC. Rated 4.9/5 from 48 public reviews across 1 review source. This is the MyTrustedTraders public-evidence profile for this contractor, with independent reviews, credentials and registry data from named public sources, no ads, and no paid placement.

Trust Score: 43 out of 100 (building a public record). The score rests on rated 4.9 from 48 reviews.

They state they've been established since 1997, but the earliest independent source we can find is 2017. Worth asking them about the gap.

## About
Callender Howorth is one of the UK’s leading international luxury interior design practices renowned for their stunning portfolio and memorable residential interiors. With offices in the French Riviera, Central London and New York - their multi-disciplinary team of award-winning architects and designers specialise in interior architecture, interior design and build with complete project management. A passion for design, an unparalleled commitment to excellence, and 25 years of experience have led Callender Howorth to deliver exceptional design and renovation of exclusive villas on the Cote d’Azur, restoration of listed London townhomes to “state of the art” penthouses in Manhattan, prestigious properties in Paris, panoramic beach homes in Laguna Beach, and wine country estates in Ojai, California. Our clients are at the heart of every project and benefit from a complete project management team. Contact us about your next project. London office: +44 207 3368 560 New York office: +1 470 798 4146 French Riviera office: +33 483 5805 27

## Public review evidence (by source)
| Source | Average rating | Reviews |
| --- | --- | --- |
| Houzz | 4.9/5 | 48 |

Rated 4.9, in line with the local average for interior designers in Saint-Jerome, QC. Across 5 interior designers in Saint-Jerome, QC, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.

## Trades
Interior designer

## Services they list
_Listed on public sources or the business's own website; check directly that they cover your job before you book:_
- Architectural Design
- Architectural Drawings
- Basement Conversion
- Basement Design
- Building Design
- Conservatory Design & Installation
- Home Cinema Design
- Home Renovation
- House Extensions
- House Restoration
- Interior Design
- Kitchen Design

## See their work
_Portfolio and gallery links this business publishes. Inspect the source to see what each image represents:_
- [Houzz](https://www.houzz.co.uk/professionals/design-and-build)
- [Instagram](https://www.instagram.com/callenderhoworth)
- [Facebook](https://www.facebook.com/CallenderHoworth)

## Awards & recognition
- 8× Best of Houzz winner (2026, 2025, 2024, 2022, 2021, 2020, 2018, 2017)

## What we checked, and when
_What MyTrustedTraders independently checked for this business (verified items only):_
- Review volume: MyTrustedTraders shows 48 public reviews on this profile. (via MyTrustedTraders public listing)
- Public listing spread: MyTrustedTraders shows 1 public listing for this contractor. (via MyTrustedTraders public listing)
- Business identity: MyTrustedTraders shows public business identity data with operating status unknown. (via MyTrustedTraders public listing)
- Contact phone: MyTrustedTraders shows a public phone contact on this profile. (via MyTrustedTraders public listing)
- Website: MyTrustedTraders shows a public website for this contractor. (via MyTrustedTraders public listing)

Full verification checklist: https://ca.mytrustedtraders.com/traders/callender-howorth-interior-architectural-design/checks

## Credentials & sources
- Credentials shown: 0
- Corporate registry status: Unknown
- Evidence held from: Houzz
- Check dates vary by source. Where we hold a date, the check shows it.

## What this business says about itself
_Self-declared on the contractor's own website, not independently verified:_
- Established: 1997 (29 years in business)
- Experience they state: 25 years
- Areas served: London, Paris, French Riviera, New York, Los Angeles
- Good to know: Design service
- Languages spoken: English, French

## Before you hire an interior designer
_What to check when choosing this kind of trade (general guidance, not a claim about this business):_
- Trade licensing in Canada is set by each province or territory. Electrical, gas and plumbing are licensed trades almost everywhere (for example ESA for electrical and TSSA for gas in Ontario), so check your provincial regulator that the contractor is certified for the work before you hire.
- A construction lien is a real risk: in every province an unpaid subcontractor or supplier can register a lien against your home even if you already paid the main contractor. Hold back the statutory amount (commonly around 10%) and get signed lien waivers as you pay.
- Ask to see a portfolio of completed work like yours, plus recent references you can contact.
- Check the credentials and registrations that matter for this work, and that they are current.
- Get a written, itemized quote with scope, assumptions and a staged payment schedule.

## Contact
- Phone: +44442073368560
- Website: http://callenderhoworth.com

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Source: MyTrustedTraders, https://ca.mytrustedtraders.com/traders/callender-howorth-interior-architectural-design
Real public evidence only: every figure traces to its named source. The evidence for this business comes from a single public source, so it is not yet cross-checked against a second. If a source does not carry a field, it is not shown.