5 Best Basement Renovation Contractors in Singapore (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified August 2026 · 8 min read

Honestly, the first thing to know about basement renovation contractors in Singapore is that almost no home here has a basement to renovate. HDB flats and most condos are built without one, and even landed houses rarely dig down, so the contractors below are waterproofing specialists who handle the below-grade and wet-area work that actually exists in Singapore homes: toilets, balconies, roofs and the occasional basement level in a bungalow. One name has logged 502 reviews at 4.8 stars, the deepest track record on this page.

Short answer: There is no dedicated basement-renovation trade in Singapore, so the closest real match is waterproofing and structural work. SWC Construction Waterproofing Singapore leads with 4.8 stars across 502 reviews, followed by WaterproofSG Pte. Ltd. (5.0, 197 reviews) and Atlas Works Pte Ltd (4.9, 214 reviews). Expect a site inspection before any quote is given.

Jump to a business

1. SWC Construction Water…
2. WaterproofSG Pte. Ltd.
3. Atlas Works Pte Ltd
4. Flux Solutions Pte Ltd
5. Classic Waterproofing…
Get listed

Why this page is really about waterproofing

#	Business	Rating	Reviews	Best for
1	SWC Construction Waterproofing Singapore	4.8 ★	502	Ceiling leaks / wall seepage	View ›
2	WaterproofSG Pte. Ltd.	5.0 ★	197	Perfect rating / landed properties	View ›
3	Atlas Works Pte Ltd	4.9 ★	214	No-hacking nano waterproofing	View ›
4	Flux Solutions Pte Ltd	4.9 ★	162	Fast turnaround / signage and general contracting	View ›
5	Classic Waterproofing & Plumbing (s) Pte Ltd \| Roof Waterproofing Specialist	4.7 ★	138	Combined waterproofing and plumbing	View ›

5 Best Basement Renovation Contractors in Singapore (2026)

The options, reviewed

#1 Overall🕑 Open 6 days/wk

SWC Construction Waterproofing Singapore

4.8502 Google reviews

SWC Construction Waterproofing Singapore is a BCA and HDB-registered contractor that has specialized in waterproofing and leak detection for more than 20 years. The team handles toilet, bathroom, balcony and roof waterproofing, and is BizSAFE Level 3 certified. Below-grade seepage into a bungalow's lower level would fall under the same repertoire, since the underlying diagnosis-and-membrane work is the same regardless of floor level.

What people praise

Fast response and site visits, often within days of a query
Technicians explain the repair process clearly before starting
Reasonable, clearly communicated pricing
Clean work, with debris removed after the job

Worth knowing

Complex leaks can take a few days to schedule around the assessment
As with any waterproofing job, results depend on correctly diagnosing the source first

Reputation scorecardrank in Singapore

Rating4.8 / 5

Review volume502 · 98th

Confidencehigh

Recency2 months ago

Info completenesssite · phone · hours

Rating breakdown90% 5-star

✓ VerifiedSource: Google

Our take: The most-reviewed name here and a strong first call for any wet-area or below-grade leak, even though basement work specifically is not something this page's businesses are asked about often.

Website +6587544058 Directions

19 Woodlands Industrial Park E1, #01-06, Singapore 757719

#2🕑 Open 7 days

WaterproofSG Pte. Ltd.

5.0197 Google reviews

WaterproofSG Pte. Ltd. is a waterproofing specialist covering basements, roofs, walls, foundations and wet areas for both residential and commercial properties across Singapore. Reviewers specifically mention landed-property roof leaks and long-standing seepage problems being fully resolved. The company's own service list explicitly names basement waterproofing among its offerings, making it one of the few businesses here that touches the actual word.

What people praise

Perfect 5.0 rating across nearly 200 reviews
Explicitly lists basement, foundation and wall waterproofing among services
Consultants described as thorough and not pushy about upselling
Detailed inspection before any work plan is proposed

Worth knowing

Best suited to landed and larger properties given the scope of services
No published pricing, so a site visit is needed for a quote

Reputation scorecardrank in Singapore

Rating5 / 5

Review volume197 · 88th

Confidencehigh

Recency4 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: If your property genuinely has a basement or below-grade level, this is the name on this page most directly built for that work, and it holds a flawless rating to back it up.

Website +6583165312 Directions

59 Kovan Rd, #03-02, Singapore 548148

#3🕑 Open 7 days↩ Responds to reviews

Atlas Works Pte Ltd | Waterproofing & Painting Services Singapore | Residential & Commercial

4.9214 Google reviews

Atlas Works Pte Ltd is a BCA-trained waterproofing and painting contractor known for a no-hacking nano waterproofing method that avoids tearing up existing tiles or flooring. Its services span toilet, balcony, roof and basement waterproofing, plus wall and ceiling seepage repair and restoration painting after water damage. It offers a written multi-year warranty on its waterproofing work.

What people praise

No-hacking method saves time versus full tile removal
Written warranty backing the waterproofing work
Handles both the leak fix and the follow-up wall restoration and paint
Owner responds to every review, including the negative one

Worth knowing

One customer reported a stubborn seepage case took multiple attempts and a full refund before resolution
Complex or hard-to-diagnose leaks can extend the timeline

Reputation scorecardrank in Singapore

Rating4.9 / 5

Review volume214 · 93rd

Confidencehigh

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown93% 5-star

✓ VerifiedSource: Google

Our take: A strong pick for less invasive waterproofing work, though the one detailed negative review is worth reading if your case looks unusually stubborn.

Website +6588000567 Directions

#4🕑 Open 7 days↩ Responds to reviews

Flux Solutions Pte Ltd

4.9162 Google reviews

Flux Solutions Pte Ltd is a Singapore waterproofing and general building-repair contractor also known for signage and glass-panel installation work, suggesting a broader general-contracting bench than a pure waterproofing specialist. Reviewers describe balcony leak repairs completed within two days using a non-hacking method, alongside larger commercial projects handled on tight timelines.

What people praise

Fuss-free scheduling with clear communication
Non-hacking balcony leak solutions completed quickly
Handles both residential waterproofing and larger commercial projects
Consistently described as professional and efficient

Worth knowing

Broader general-contracting focus means basement or below-grade work specifically is not a headline service
Smaller review base than the top two names on this page

Reputation scorecardrank in Singapore

Rating4.9 / 5

Review volume162 · 83rd

Confidencemoderate

Recency7 weeks ago

Info completenesssite · phone · hours

Rating breakdown96% 5-star

✓ VerifiedSource: Google

Our take: Worth calling for a fast, tidy waterproofing fix, particularly if the job is smaller in scope like a balcony or roof leak rather than a full below-grade renovation.

Website +6562266116 Directions

55 Serangoon North Ave 4, #02-11 S9, Singapore 555859

#5🕑 Open 6 days/wk

Classic Waterproofing & Plumbing (s) Pte Ltd | Roof Waterproofing Specialist

4.7138 Google reviews

Classic Waterproofing & Plumbing (s) Pte Ltd is a licensed Singapore contractor covering waterproofing, roofing, tiling and plumbing under one roof, useful for jobs that touch more than one trade at once, like a wall seepage repair that also needs a pipe fixed. It holds BCA certification and carries public liability insurance. Reviewers name individual technicians for pressure grouting and floor waterproofing work.

What people praise

Covers waterproofing, plumbing, roofing and tiling in one company
Technicians described as punctual and careful with finishing touches
BCA-certified with full liability insurance
Competitive turnaround, often within a couple of days of inspection

Worth knowing

Slightly lower rating than the other names on this page
Best suited to combined wet-area jobs rather than a specialist basement build-out

Reputation scorecardrank in Singapore

Rating4.7 / 5

Review volume138 · 78th

Confidencemoderate

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown88% 5-star

✓ VerifiedSource: Google

Our take: A practical choice when a leak involves both waterproofing and a plumbing fix, since one company can handle the whole job instead of coordinating two.

Website +6569707644 Directions

30 Kaki Bukit Rd 3, #07-08 Empire Techno Centre, Singapore 417819

Your business here

Get listed on this page, in front of local customers already searching for you.

Claim this spot ›

How we score

Every number on this page comes from public Google data pulled on the date shown, not opinion or payment. Rating is the business’s live Google star average. Review volume is how many customers have rated them, measured against others in the same pool. Confidence weighs the rating by that volume, so a 4.8 built on 500-plus reviews carries more weight than a smaller sample. Recency reflects how recently people are still leaving reviews. No business can pay to change these numbers.

How much does waterproofing or below-grade work cost in Singapore? (2026)

None of the businesses on this page publish a fixed basement-renovation price list, since the work is really scoped as waterproofing, and cost depends on the size of the area, the severity of the seepage, and whether hacking is needed. Get a site inspection and written quote from each contractor before committing.

Serving all of Singapore

These contractors cover HDB estates, condominiums and landed housing across Singapore, including Woodlands, Kaki Bukit, Serangoon and the central regions, with site visits arranged island-wide. Searching for a basement renovation contractor near me? Each listing below shows a live phone number so you can ask directly whether your property’s specific situation, basement or otherwise, is something they can quote on.

What to ask before you hire a basement or waterproofing contractor

Does your team specifically handle below-grade or basement-level work, not just wet-area waterproofing?
Will you carry out a site inspection before quoting?
Is hacking required, or can this be done with a non-hacking method?
What warranty do you provide on the waterproofing membrane or repair?
Are you BCA-registered and BizSAFE certified?
How long will the area need to cure before it can be tiled or used again?

Frequently asked questions

Do Singapore homes actually have basements?

Rarely. Most HDB flats and condos are built without a basement level, and even landed homes seldom have one. That is why this page’s real Google data is made up of waterproofing and below-grade repair specialists rather than dedicated basement builders.

How did you choose these contractors?

We started from waterproofing and structural contractors in Singapore with a public Google presence, then ranked by rating, review volume, consistency and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

How much does waterproofing cost in Singapore?

Pricing depends on the area size, severity of the leak, and whether hacking is required. None of the businesses here publish a fixed rate, so get a written quote after a site visit.

The bottom line

If you landed here searching for a basement contractor, know upfront that the real work available in Singapore is waterproofing and below-grade repair, not basement construction. SWC Construction is the safe default on review volume, while WaterproofSG’s perfect rating and explicit basement-waterproofing listing make it worth a call if your property genuinely has a lower level. Get the site inspection before assuming any price.

Best Home Improvement And Renovation in other cities

More categories in Singapore

Own one of these businesses, or want to be here?

Claim your spot on this page: Basic listing $50 or Premium $100 for the top spot, held a full year. Both include a permanent link to your site.

Get listed See pricing