Architectural and structural solutions tailored to elevate residential and commercial properties.
Designing the Future of Your Space
Permit-Ready Drawings
Smart Legal Basement Conversions
Built for Value & Curb Appeal
Consultation & Site Review
We begin with a detailed discussion and on-site evaluation to understand your goals, space, and requirements.
Professional Design & Drafting
Our team creates architectural and structural drawings tailored to your project—including everything needed for permit submission.
Permit Submission & Revisions
We assist with city submissions, handle revisions, and provide ongoing support until your permit is approved and you’re ready to build.
About Greywall Designs
Architectural Vision Backed by Experience
“Design is more than lines on a page — it’s the foundation of how people live, move, and grow within a space. We’re here to make that foundation strong, smart, and lasting.” – Pawan Grewal, Founder
Greywall Designs is a GTA-based architectural and structural design firm led by Pawan Grewal. With 12+ years of hands-on experience, we specialize in designing residential and commercial spaces that are both stylish and structurally sound.
From legal basement conversions to custom home designs, our work is rooted in building code compliance, modern design principles, and smart functionality. We don’t just draw plans—we guide you through the entire process, from initial sketches to final city approval.
Design Solutions That Build Value.
Legal Basement Permit Drawings
We prepare professional drawings for basement conversions that meet all GTA second-suite and fire safety regulations.
Custom Home Design Layouts
From layout to structure, we design dream homes tailored to your lifestyle and built to meet municipal building codes.
Well-Designed Additions & Alterations
Expand your home with expertly designed additions or reconfigure existing space to suit new needs—inside and out.
Side Entrances & Walkout Stairs
We design safe, code-compliant separate entrances and below-grade walkouts to support legal basement units.
Room Over Garage Designs
Maximize unused space with structural designs for additional bedrooms, offices, or rental suites above your garage.
Decks, Porches & Patio Design
We create outdoor spaces that complement your home’s architecture while enhancing functionality and curb appeal.
Tenant Fit-Outs for Commercial Spaces
We design functional, code-compliant tenant spaces— from retail stores to offices—ensuring seamless layout, permitting, and inspections.
Garden Suite Design & Permit Drawings
We provide full architectural drawings and permit support for detached garden suites, helping homeowners add legal rental units or extended living spaces on their property.
Fourplex Planning & Design
Our team creates designs for fourplex residential builds, focusing on smart layouts, zoning compliance, and full permit-ready documentation for development approval.
Municipalities We Work With.
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Interior Layout Refiguration
Optimize Your Space Without Expanding Your Footprint
Whether you’re opening up a kitchen, relocating a staircase, or converting a closed-off room into open-concept living, we redesign interior layouts to better reflect how you live. Our structural team ensures all modifications meet safety codes while maximizing functionality and flow within your existing space.
Testimonials
What Our Clients Say
Design Inspiration Gallery
Explore real ideas, styles, and layouts to spark your next project.
Before & After Transformations
See the Difference Smart Design Makes
Explore real project transformations that showcase the power of architectural planning, structural upgrades, and modern finishes. From unfinished basements to fully legal rental units, and outdated spaces to streamlined modern interiors—these side-by-side comparisons highlight the impact of thoughtful, code-compliant design.
Featured Project
Residential Modern Home in London, ON
A striking modern home with crisp geometry and minimalist curb appeal. This project blended sharp angles, clean materials, and functional layout to bring the client’s contemporary vision to life—inside and out
- Smooth white exterior walls with dark grey-green trim and window accents
- Angular rooflines with flat and sloped elements for a bold silhouette
- Oversized dark garage door with horizontal glass panels
- 3D architectural rendering for pre-build visualization
- Large, smooth concrete driveway with integrated drainage
- Minimalist landscaping to complement the home’s modern architecture
Featured Project
Retail Space in Cambridge, ON
A full architectural and interior redesign for a high-end menswear clothing store. This commercial project focused on creating a modern, elegant retail experience through thoughtful spatial planning and premium finishes.
- Custom layout for optimal product flow and customer navigation
- Engineered wood flooring for a warm, refined look
- Designer-grade LED lighting to accent product displays
- Painted accent walls for brand personality and depth
- Built-in shelving units and wall-mounted racks for suits and accessories
- Permit drawings and city approvals for retail space alterations
Featured Project
Residential Custom Home in Caledon, ON
A modern interpretation of classic symmetry, this home blends timeless design principles with updated material finishes. We provided a full suite of design services from concept modeling to exterior detailing.
- 3D architectural model for pre-construction visualization
- Exterior material selection including stone brick, neutral cladding, and slate roofing
- Strategically placed windows and doors to balance light and formion including stone brick, neutral cladding, and slate roofing
- Interior design coordination including wall colours, trim details, and floor transitions
- Custom symmetrical elevation plan inspired by traditional estate homes
- Full permit drawing package and coordination with city for approvals
Featured Project
Restaurant Design in St. Thomas, Ontario
A full-scale commercial interior design project for a new dining space focused on comfort, atmosphere, and efficient layout. We created a central island bar and lounge-forward concept with a mix of natural materials and clean lighting.
- High ceilings with modern suspended lighting for ambient glow
- Island-style bar with wraparound seating and rich wood cladding
- Wall-to-wall bench lounges with warm brown tones and soft lighting
- Light blue accent chairs for contrast and modern softness
- Custom shelving and storage integration behind bar and walls
- Built-in stage area for live music, DJs, and community events
- Acoustic considerations and flow-focused layout for seating zones
Featured Project
Cultural & Religious Facility in Kitchener, Ontario
A meaningful project designed for comfort, function, and accessibility. This Muslim community space was created with a clean, spiritual atmosphere in mind—both inside and out.
- Light grey exterior finish with smooth textures and green accent details
- Wall-length shoe shelf and mudroom-style entry area
- Spacious, bright washrooms with modern fixtures and potlights
- Full mirrors with integrated LED lighting
- Ablution areas with seating, grab bars, and easy-to-clean finishes
- Layout designed for prayer flow, accessibility, and safe movement
Featured Project
Residential Basement Addition in Brampton, Ontario
A complete transformation of an unfinished basement into a fully legal, move-in-ready basement apartment. Designed for comfort, style, and compliance, this unit is ideal for rental income or multigenerational living.
- Full architectural and structural drawings for legal second suite approval
- Complete kitchen design including custom cabinetry and tiled backsplash
- Full bathroom with modern fixtures and space-efficient layout
- Living area with modern lighting, luxury vinyl plank flooring, and accent paint
- Plumbing, electrical, and HVAC coordination to meet all municipal code requirements
Featured Project
Modern Custom Home in Komoka, Ontario
A dark, angular residence designed with bold contrasts and architectural precision. The focus was on sleek street presence and modern livability, wrapped in rich materials and functional design.
- Dark grey pitched roof with sharp angles and modern proportions
- Matte black garage door with stacked rectangular windows
- Charcoal siding and clean concrete driveway with linear edging
- Symmetrical front entrance with modern lighting and steel accents
- Full design package with 3D render and permit-ready drawings
Faqs
Frequently Asked Questions
We serve the entire Greater Toronto Area, including Brampton, Mississauga, Caledon, Vaughan, Scarborough, and surrounding regions.
Yes, we specialize in legal second-unit designs across the GTA. We ensure your basement apartment meets all zoning, fire safety, and building code requirements.
Yes, we specialize in structural and architectural plans for room additions, including second-storey builds over garages. We ensure the designs are safe, functional, and meet zoning and structural requirements.
Absolutely. For select projects, we provide 3D models and renderings to help you visualize the final space before construction begins. This is especially helpful for custom homes and major renovations.
Milestones that define us
Years of Experience. Projects That Matter. Clients Who Trust.
2024 – Over 80 Permit Approvals Secured
Successfully submitted and approved over 80 permit drawings across the GTA.
2018 – Recognized by Ontario Building Association
Received industry recognition for excellence in residential design innovation.
2021 – Expansion to Full Structural Design
In-house structural consulting services for residential and commercial builds.
2010 – First Legal Second Unit Project Completed
Helped legalize one of the earliest second units in Brampton under new by-laws.
Our Contact
Get In Touch
Let’s Design what’s next
From permits to finished plans, we’re here to help you build smarter in the GTA.
Greywall Designs is a GTA-based architectural and structural design firm with 12+ years of experience. We specialize in residential and commercial drawings, permit approvals, and custom design solutions that bring smart, modern spaces to life.
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"Greywall Designs handled everything from the layout to the permit approvals for our basement apartment. Pawan and his team made the process smooth and stress-free. Highly recommend for anyone legalizing a second unit in the GTA."
Kyke Su Markham, ON