Design-build is the project delivery model where a single firm handles design and construction under one contract — versus the traditional model where a separate architect produces drawings and you tender to general contractors. For most Ottawa homeowners doing $40K-$300K renovations and custom homes under $1.5M, design-build is the simpler, faster, and overall-better-value path. This page covers how design-build works, when it's the right choice (and when it isn't), 2026 pricing, the Ottawa firms operating in this model, and how to vet a design-build firm to ensure design quality matches cons...
Standard design-build workflow: (1) Initial consultation — site visit, scope discussion, preliminary budget range. (2) Design agreement — typically a phased agreement (schematic design, design development, construction documents) at a fixed fee or hourly rate, often credited toward construction if you proceed. (3) Schematic design — concept layouts, 3D rendering, material direction, refined budget. (4) Design development — material selection, fixture specification, detailed elevations and sectio...
Pros: (1) Single point of accountability — no finger-pointing between designer and builder. (2) Faster — no design-to-bid handoff (typically saves 4-12 weeks). (3) Better cost control through value engineering during design — designer knows what trades cost. (4) Easier change management — design and construction are the same conversation. (5) Earlier price certainty — typically fixed price at design development vs construction documents. Cons: (1) Premium pricing — typically 5-15% above separate...
Design-build is the right model when: (1) Your scope is mid-range complexity ($40K-$1.5M typical sweet spot). (2) You value process simplicity and single accountability over absolute lowest cost. (3) You don't have a pre-existing relationship with a designer. (4) You want price certainty earlier in the process. (5) Your timeline is constrained (lease running out, baby coming, family event date). Design-build is NOT the right model when: (1) You're doing a luxury or ultra-luxury custom home ($2M+...
Renovation-focused design-build: Lagois Design-Build-Renovate, OakWood, Amsted Design-Build, Astro Design Centre. Strong residential renovation portfolios across kitchens, bathrooms, basements, and additions. Custom home design-build: Astro Design Centre, Amsted Design-Build, Surface Developments, Domicile. Custom new builds typically $700K-$3M. Basement specialty design-build: Just Basements, Total Basement Renovations. Bath and kitchen specialty design-build: many in market — check sector spec...
Design fee structures: (1) Fixed phased fees — schematic $1,500-$5,000, design development $3,000-$10,000, construction documents $5,000-$20,000. Often credited (50-100%) toward construction if you proceed. (2) Percentage of construction — 5-10% of estimated construction cost, split across design phases. (3) Hourly with cap — $125-$225/hour with maximum cap. Construction pricing: design-build firms typically deliver fixed-price construction contracts at 5-15% premium over separate-architect-plus...
Seven verification points: (1) Portfolio depth — 10+ completed design-build projects in your scope range in the last 3 years. (2) Designer credentials — in-house designer with NKBA, KBD, ARIDO, OAA, or BCIN credentials (not just 'we have a guy who draws'). (3) Construction credentials — same vetting as any GC: $2M+ liability, WSIB, licensed trades, recent permit history. (4) Schematic and construction documents quality — ask to see complete document sets from 2 recent projects. (5) Design phase ...
A design-build firm handles both design (drawings, 3D rendering, material selection) and construction under a single contract. Contrasts with separate-architect-plus-builder where a designer produces drawings and you tender to general contractors. Design-build is faster, simpler, and offers single accountability.
Design fees: fixed phased $1,500-$20,000 per phase, percentage of construction 5-10%, or hourly $125-$225 with cap. Construction typically runs 5-15% premium over separate-architect-plus-builder. Total project cost aligns with mid-to-premium tier of comparable scope.
Design-build for $40K-$1.5M projects, time-constrained timelines, process simplicity, no pre-existing designer relationship. Separate architect for projects over $2M, heritage work, architectural ambition, competitive bidding requirements, or pre-existing architect relationship.
Renovation-focused: Lagois, OakWood, Amsted, Astro Design Centre. Custom homes: Astro, Amsted, Surface Developments, Domicile. Basement specialty: Just Basements, Total Basement Renovations. Always verify in-house designer credentials and request to see complete document sets from recent projects.
Typically 5-15% premium over equivalent separate-architect-plus-builder pricing. The premium pays for: single accountability, integrated cost management, faster delivery, easier change management. For most homeowners under $1.5M total project budget, the premium is justified by reduced complexity and risk.