---
title: "Jennifer Costello Interiors — Interior Decorators | Houzz"
canonical_html_url: https://www.houzz.com/professionals/interior-decorators/jennifer-costello-interiors-pfvwus-pf~1988148044
markdown_url: https://www.houzz.com/md/professionals/pf~1988148044.md
entity_type: LocalBusiness
business_name: "Jennifer Costello Interiors"
category: ["Interior Decorators"]
image: https://st.hzcdn.com/fimgs/cf337b2908bc6a54_0794-w400-h400-b0-p0--.jpg
address: "Newmarket, Ontario, Canada"
latitude: 44.0408
longitude: -79.4745
phone: "(416) 409-1474"
website: https://jennifercostellointeriors.com
rating: 5
review_count: 1
best_of_houzz_awards: 1
followers: 55
last_updated: 2026-09-21
---

# Jennifer Costello Interiors

Original Houzz profile: [Jennifer Costello Interiors](https://www.houzz.com/professionals/interior-decorators/jennifer-costello-interiors-pfvwus-pf~1988148044)

## Professional summary

- **Primary category:** Interior Decorators
- **Location:** Newmarket, ON
- **Serves:** The Blue Mountains
- **Houzz rating:** 5.0 out of 5 (1 review)
- **Best of Houzz:** 1 award (2019), for Service.

## About

### Houzz Badges

- 25 Ideabook Saves

Jennifer Costello Interiors offers residential design and renovation project management services.

### Services Provided

- 3D Rendering
- Basement Design
- Bathroom Design
- Bedroom Design
- Closet Design
- Custom Bathroom Vanities
- Custom Blinds & Shades
- Custom Built-ins
- Custom Cabinets
- Custom Fireplace Mantels
- Custom Furniture
- Custom Home Bars
- Custom Kitchen Cabinets
- Custom Pantries
- Custom Shelving
- Custom Walk-in Closets
- Entry Design
- Floor Plans
- Home Office Design
- Kids Bedroom Design
- Kitchen Design
- Laundry Room Design
- Lighting Design
- Living Room Design
- Mudroom Design
- Nursery Design
- Playroom Design
- Project Management
- Space Planning

### Areas Served

- The Blue Mountains

### Typical Job Cost

CAD 50,000 - CAD 250,000

## Business Details

| Field | Value |
| --- | --- |
| Business Name | Jennifer Costello Interiors |
| Address | Newmarket, Ontario, Canada |
| Phone | (416) 409-1474 |
| Website | https://jennifercostellointeriors.com |
| License Number | 280376146 |
| Followers on Houzz | 55 |

**Social profiles:**
- Facebook — https://www.facebook.com/jennifercostellointeriors
- LinkedIn — https://www.linkedin.com/in/jenncostello/
- Blog — https://www.jennifercostellointeriors.com

## Contact

- **Houzz profile:** [Jennifer Costello Interiors](https://www.houzz.com/professionals/interior-decorators/jennifer-costello-interiors-pfvwus-pf~1988148044)
- **Website:** https://jennifercostellointeriors.com
- **Phone:** (416) 409-1474

## Credentials

**Certifications & Awards**
- New York Institute of Art + Design (Honours)
- Certified Project Management Professional

- **Best of Houzz:** 1 award (2019), for Service.

**Affiliations**
- [Decorators & Designers Association of Canada](https://www.houzz.com/professionals/schools-and-organizations/decorators-and-designers-association-of-canada-pfvwus-pf~1041116292)

## Reviews

**Overall rating: 5.0 out of 5 — 1 review**

### All 1 review

**★★★★★ — Anette Mageau, Aug. 2018**

> Jennifer is a consummate professional - she is great to work with and her design sense is spot on! She helped me when I was totally overwhelmed with my kitchen redesign and listened to my sources of anxiety and provided a solution I wouldn't have thought of.
>
> (I will post photos when they are ready!)

## Selected projects

- [Family Room Design](https://www.houzz.com/hznb/projects/family-room-design-pj-vj~3918617)
  - Location: Toronto, ON
  - Photos: 1
- [Master Bathroom](https://www.houzz.com/hznb/projects/master-bathroom-pj-vj~2884764)
  - Location: Toronto, ON
  - Photos: 6
- [Family Room Update](https://www.houzz.com/hznb/projects/family-room-update-pj-vj~2884608)
  - Location: Newmarket, ON
  - Photos: 4
- [Bathroom Renovation](https://www.houzz.com/hznb/projects/bathroom-renovation-pj-vj~2884529)
  - Location: Newmarket, ON
  - Photos: 5
  - Description: This bathroom was updated with a large walk-in shower for a growing teen and occasional guests who stay in the adjoining bedroom. A wide horizontal shower niche in a marble chevron pattern was designed to hold shower products. Marble was used on the floor and in the shower.

[See all 4 projects](https://www.houzz.com/professionals/interior-decorators/jennifer-costello-interiors-pfvwus-pf~1988148044)

## Ideabooks

- [Backyards](https://www.houzz.com/ideabooks/10146312/list/backyards) — 19 ideas
- [guest rooms](https://www.houzz.com/ideabooks/120761223/list/guest-rooms) — 1 idea
- [Living/Family Rooms](https://www.houzz.com/ideabooks/71585677/list/living-family-rooms) — 3 ideas
- [Kitchens](https://www.houzz.com/ideabooks/10146203/list/kitchens) — 12 ideas
- [Mudrooms](https://www.houzz.com/ideabooks/75225770/list/mudrooms) — 4 ideas
- [Condos](https://www.houzz.com/ideabooks/89408301/list/condos) — 2 ideas
- [Dining Rooms](https://www.houzz.com/ideabooks/19064948/list/dining-rooms) — 8 ideas
- [Offices](https://www.houzz.com/ideabooks/21446245/list/offices) — 8 ideas
- [Laundry & Linen](https://www.houzz.com/ideabooks/18906866/list/laundry-linen) — 2 ideas
- [Basements](https://www.houzz.com/ideabooks/21901942/list/basements) — 11 ideas
- [Exteriors](https://www.houzz.com/ideabooks/71585308/list/exteriors) — 5 ideas
- [Closets](https://www.houzz.com/ideabooks/59383812/list/closets) — 7 ideas
- [Staircases](https://www.houzz.com/ideabooks/89407924/list/staircases) — 8 ideas

[See all 13 ideabooks](https://www.houzz.com/ideabooks/users/jennifercostellointeriors)

## Community Q&A

**Q: What is the stone around the fireplace?** *(in Photo Questions)*

What is the stone?

A: It's a tumbled icy white pebbled mosaic from Tilemaster.

---

*Source: Houzz professional profile. Reflects the profile as of 2026-09-21.*