Sier Cumberland Group
Ontario new home builder based in London. 2 licensed companies build under this name. In Ontario's new home warranty program since 2011.
Not scored: fewer than 100 homes enrolled.
Warranty record per 1,000 homes
Rates make big and small builders comparable. Lower is better.
A chargeable conciliation means Tarion found the builder should have resolved a warranty item itself. A paid claim means Tarion compensated the owner for a warranted item. See what the warranty covers.
We only score builders with at least 100 homes enrolled in the last 10 years, because a handful of homes is too few to judge a warranty record fairly. The raw figures above are still accurate.
Reviews come from buyers and owners and don't change the score above, which uses HCRA data only.
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Companies under this name
| Company | HCRA account | Licence status | Since | Homes | Conciliations | Claims |
|---|---|---|---|---|---|---|
| Reis Design Build Sier Developments Corporation | B41649 | Licensed | 2011 | 36 | 0 | 1 |
| Cumberland Park Developments Corp. | B64793 | Licensed | 2026 | 0 | 0 | 0 |
Contact and verification
Website: www.reisdesignbuild.com
Phone: 519-476-1862
Confirm this builder's current licence on the HCRA Ontario Builder Directory by searching its name or HCRA account number. Figures here were retrieved September 30, 2026.
Before you sign with Sier Cumberland Group
- Ontario HST rebate on new homes: up to $130,000
- Who gets the rebate when the price includes HST
- How much of your deposit is protected
- What the builder owes you if closing is delayed
Are you Sier Cumberland Group? Request a correction or add a response.
Other builders based in London
| Rank | Builder | Score | Homes |
|---|---|---|---|
| 5 | Tricar | 9.8 | 3,066 |
| 229 | The Ironstone Building Company Inc. | 8.7 | 1,353 |
| 32 | Rembrandt Homes | 9.4 | 844 |
| 451 | FoxWood Building Corporation | 5.8 | 519 |
| 469 | Forever Homes | 5.6 | 433 |
| 556 | Millstone Homes Inc. | 2.4 | 418 |
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