Duo Building LtdGeneral contractor in London, ON

#45Ranked #45 of 127 general contractors in London

Duo Building Ltd is a general contractor at 663 Central Ave, London, ON N5W 3P7, ranked #45 of 127 general contractors in London and rated 4.5 from 25 Google reviews. Open Monday to Friday.

London, ONUpdated October 22, 20260 paid placements in any rankingHow we rank

Call (519) 434-0960Website ↗

Key facts

Key facts about Duo Building Ltd
Address	663 Central Ave, London, ON N5W 3P7Get directions
Phone	(519) 434-0960
Website	duobuilding.com
Hours	Monday to Thursday: 8 AM – 5 PM; Friday: 8 AM – 4 PM
Google rating	4.5 from 25 Google reviews

Trades

Each trade shows the evidence we matched it on.

General Contractingmain tradeGoogle main category

Service area

Serves London and 4 towns within 40 km: Dorchester, St. Thomas, Ingersoll and Aylmer.

Based in London, ONView on map

Opening hours

Opening hours for Duo Building Ltd
Day	Hours
Monday	8 AM – 5 PM
Tuesday	8 AM – 5 PM
Wednesday	8 AM – 5 PM
Thursday	8 AM – 5 PM
Friday	8 AM – 4 PM
Saturday	Closed
Sunday	Closed

Open evenings — no
Open Saturdays — no
Open Sundays — no

Typical general contracting prices

Typical general contracting prices
Job	Low	Typical	High
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)	CA$20,510	CA$37,930	CA$58,490
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)	CA$9,350	CA$17,080	CA$24,820

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby general contractors

Duo Building Ltd compared with nearby businesses
Business	Rank	CR Score	Google rating	License verified	Saturday	Sunday	Distance away
Duo Building Ltd (this business)	—	57	4.5 (25)	—	No	No
KEMBRO Design Studio	#43	58	5.0 (18)	—	No	No	4.2 km
Starcity Home Solutions	#44	57	4.8 (20)	—	No	No	22.4 km
Core Builders	#46	57	5.0 (7)	—	—	—	3.8 km

See all 127 ranked general contractors in London

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.5from 25 Google reviews

Hired Duo Building Ltd? Write a review

Questions about Duo Building Ltd

How is Duo Building Ltd ranked in London?

Duo Building Ltd is ranked #45 of 127 general contractors in London by CR Score, with 57 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Duo Building Ltd’s hours?

Duo Building Ltd is open Monday to Friday. Its listed hours are Monday to Thursday, 8 AM – 5 PM; Friday, 8 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Duo Building Ltd serve?

Serves London and 4 towns within 40 km: Dorchester, St. Thomas, Ingersoll and Aylmer. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

What do Google reviews say about Duo Building Ltd?

Duo Building Ltd has a rating of 4.5 from 25 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Duo Building Ltd?

Call Duo Building Ltd on (519) 434-0960. The business is at 663 Central Ave, London, ON N5W 3P7. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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