Basement renovations

The 10 Best Basement Renovation Companies in St. John's, NL

Updated 67 firms checked10 ranked

This list ranks 10 basement renovation companies in St. John's, NL. It starts from Google Maps searches for basement renovations and related building work in St. John's: 67 firms were checked, and building and renovation firms with their own website and an open Google listing went forward. Firms are weighed on their Google rating, the number of reviews behind it, how closely their services match basement renovation, and their portfolio. The strongest firm overall sits at place 1, places 2 to 4 carry a badge for what each suits best, and places 5 to 10 run in order. Ratings and review counts are Google's, checked October 14, 2026. How we rank

GoodBoy Renovations

Best overall

St. John's renovation company doing basement finishing, home additions, kitchen and bathroom remodels, flooring and exterior work like decks and siding.

Updated

Why it ranks here

  • Sets aside a portion of every project toward opening a dog rescue and sanctuary in Newfoundland.
  • Interior work runs from basement finishing and conversions to custom cabinetry, tile backsplashes, custom showers and hardwood staircases.
  • Takes on home additions and extensions as well as interior and exterior remodels.
  • Exterior jobs include custom decks and patios, siding, railings and outdoor remodels.
  • Flooring installs cover tile, hardwood and laminate, alongside painting, plastering and trim work.
Basement finishing · Home additions · Kitchen renovations · Bathroom renovations · Decks and patios St. John's
Visit website Call 709-764-7103
5.0 from 22 Google reviews

New City Construction & Welding

Best for basement framing and drywall

St. John's renovation and welding company doing room and home renovations, handyman repairs and mobile welding across the Avalon Peninsula.

Updated

Why it ranks here

  • Handles carpentry, finishing and metalwork in-house, so one crew covers a job without hand-offs between trades.
  • A mobile welding rig comes to the property for structural steel, railings, gates and equipment repairs.
  • Projects shown include a full kitchen renovation in Mount Pearl, basement framing and drywall in Torbay, and a beam install in Paradise.
  • Based in St. John's, it names Mount Pearl, Paradise, Conception Bay South and Torbay among the Avalon Peninsula areas it serves.
  • Agrees a written scope of work with the client before any work starts.
Home renovations · Basement framing and drywall · Handyman repairs · Mobile welding · Structural steel St. John's
Visit website Call 709-325-1922
5.0 from 6 Google reviews

CGH Home Development

Best for basement and bathroom work

St. John's general contractor doing bathroom and kitchen renovations, basement work and home additions, plus decks, flooring and windows.

Updated

Why it ranks here

  • Rated 5.0 from 18 Google reviews, level with the top rating on this list
  • Its 5 services include bathroom renovations, kitchen renovations, basement renovations, home additions and decks
Bathroom renovations · Kitchen renovations · Basement renovations · Home additions · Decks St. John's
Visit website Call 709-765-1590
5.0 from 18 Google reviews

Dehterov Services

Best for founder-led basement finishing

St. John's renovation company doing interior renovations, kitchens, bathrooms, basement finishing, painting and patios, run by founder Vladyslav Dehterov.

Updated

Why it ranks here

  • Vladyslav Dehterov started the company after moving to St. John's in 2023 with 9 years of renovation and construction experience.
  • Originally from Ukraine, Vladyslav is personally involved in the work on every project.
  • Services cover interior renovations, painting, bathroom remodels, basement finishing, patio building and complete home makeovers.
Interior renovations · Basement finishing · Bathroom renovations · Painting · Patios St. John's
Visit website Call 709-631-6151
4.7 from 15 Google reviews

Total Home Renovations

St. John's renovation and construction company doing home and apartment renovations, room additions, flooring and exterior work.

Updated
  • Has worked in renovation and construction in St. John's since 1994.
  • Coordinates and supervises each remodel from first consultation and design through product selection, construction and cleanup.
  • Builds room additions of any size, alongside basement, kitchen and bathroom renovations.
  • Carpentry work covers framing, insulation, drywall, plaster, trim and finish carpentry, and post and beam building.
  • Exterior and outbuilding work includes decks, patios and enclosures, solariums and sunrooms, siding, and barns, gazebos and sheds.
  • Installs hardwood and laminate flooring and refinishes existing hardwood floors.
Home renovations · Room additions · Basement renovations · Flooring · Decks and sunrooms St. John's
Visit website Call 709-725-1727
3.7 from 17 Google reviews

Ranks 07 to 10

FAB Construction

Construction company based in Mount Pearl, in the St. John's area of Newfoundland and Labrador.

709-725-2458CallWebsite

Tuckamore Contracting

Contractor working only on the Avalon Peninsula, building custom homes and cottages and doing renovations, additions and built-in woodwork.

5.0 709-740-4949CallWebsite

NJ2S Handyman Services

St. John's handyman and contracting company doing residential and commercial property maintenance, from small repairs to larger detailed projects.

5.0 709-727-0686CallWebsite

Crosbie Group

Newfoundland and Labrador industrial services company, part of the Twinshore group, working in complex, safety-critical environments.

4.5 709-722-5280CallWebsite

Compare the firms

FirmBest forServicesGoogle ratingArea
01GoodBoy RenovationsBasement finishing and home additionsBasement finishing · Home additions · Kitchen renovations · Bathroom renovations · Decks and patios5.0St. John's
02New City Construction & WeldingBasement framing and drywallHome renovations · Basement framing and drywall · Handyman repairs · Mobile welding · Structural steel5.0St. John's
03CGH Home DevelopmentBasement and bathroom workBathroom renovations · Kitchen renovations · Basement renovations · Home additions · Decks5.0St. John's
04Dehterov ServicesFounder-led basement finishingInterior renovations · Basement finishing · Bathroom renovations · Painting · Patios4.7St. John's
05Total Home RenovationsMulti-trade renovations and room additionsHome renovations · Room additions · Basement renovations · Flooring · Decks and sunrooms3.7St. John's
06Olympic ConstructionBasement renovations in St. John'sBasement renovations · Renovations5.0St. John's
08Tuckamore ContractingCustom homes, cottages and additions on the AvalonRenovations · Home additions · Custom homes · Custom woodwork · Kitchens and baths5.0St. John's
09NJ2S Handyman ServicesSmall repairs and property maintenance jobsProperty maintenance · Handyman services · Painting · Plastering · Water damage restoration5.0Torbay, serves St. John's
10Crosbie GroupIndustrial services in safety-critical environmentsIndustrial services · Construction4.5St. John's

What to check before hiring a basement renovation company in St. John's

Five things to confirm with any firm, on this list or not, before you sign. The rules below are Newfoundland and Labrador's and St. John's's.

  1. Registration with WorkplaceNL

    Ask the firm for a clearance letter from WorkplaceNL, which confirms it is registered for workers' compensation and its account is in good standing. WorkplaceNL issues clearance through its online service, so a firm in good standing can produce one.

  2. Liability insurance

    Ask for a certificate of insurance that names the firm and shows commercial general liability coverage in force for the dates of your job, and check that the subcontractors it brings in are covered too.

  3. The building permit from St. John's

    Building permits for homes in St. John's come from the City of St. John's, and finishing a basement or adding a secondary suite usually needs one. Agree in writing who applies for the permit and books the inspections.

  4. A written contract

    Get the scope of work, the payment schedule tied to stages of the work, start and finish dates, how changes are agreed and priced, and who handles permits and cleanup, all in one signed contract before any work starts.

  5. The warranty

    A renovation is not a new home, so the new home warranty rules usually do not apply: get the firm's own workmanship warranty in writing, with what it covers and for how long. Renovators in RenoMark, the Canadian Home Builders' Association program, offer a minimum two-year warranty on their work.

Types of basement renovation company in St. John's

The 10 firms on this list fall into 3 groups, read from what each firm's own site says it does and how it is listed on Google.

General contractors5

General contractors run building projects of many kinds and bring in the trades each job needs.

Renovation companies4

Renovation companies renovate existing homes, one room at a time or all of it at once.

Basement specialists1

Basement specialists work mainly on basements, from family rooms to secondary suites.

Basement renovations in St. John's: common questions

What is basement development?

It is the term Alberta builders and homeowners use for finishing an unfinished basement: framing, insulation, electrical, plumbing, drywall and flooring, often with a bedroom, bathroom or family room. Elsewhere it is usually called a basement renovation or basement finishing.

Can I add a legal suite in my basement?

In many Canadian cities, yes, but a legal secondary suite has to meet the building code and local zoning, including a separate entrance, ceiling heights, fire separation, smoke alarms and egress windows. It needs a permit and inspections, so ask the firm whether it has built legal suites in your city.

How do I keep a finished basement dry?

Deal with water before finishing: grading and downspouts that carry water away from the house, a working sump pump where the house has one, and repairs to foundation cracks. Then insulate and frame in a way that handles moisture. Ask the firm what it checks before it starts framing.

Can I add a bathroom in my basement?

Usually. A basement bathroom needs a drain connection, which can mean breaking the concrete floor to reach the main drain, or a pump system where the drain sits higher than the floor. The plumbing work needs a permit and inspection.

How do I check that a contractor in St. John's is registered with WorkplaceNL?

Ask the firm for a clearance letter from WorkplaceNL. WorkplaceNL issues clearance through its online service, so a firm in good standing can produce one.

Who issues building permits in St. John's?

Building permits for homes in St. John's come from the City of St. John's. For basement renovation, finishing a basement or adding a secondary suite usually needs one. Many firms apply for the permit as part of the job, so agree who does it before you sign.

Before you get quotes

Corrections

Has something on this list changed?

Send the detail that is out of date, or the name and website of a firm that belongs here.

Request a correction Suggest a firm