Senior Interior Design & Renovation Specialist
derrymacken Limited
"A home tells a story. When you're renovating, you're not erasing that story — you're helping it evolve. The best Irish renovations respect what came before while making space for how people actually want to live now."
— Síle O'Mahony
Síle brings 14 years of hands-on experience transforming Irish homes — from rural cottages in Cork to Victorian terraces in Dublin. She's worked on over 250 residential projects, which means she's encountered just about every challenge Irish properties throw at you. Rising damp. Poor insulation. Those dark winter months when natural light is scarce. And always, the question of how to balance heritage with modern living.
Her training started early. She grew up restoring her family's 1920s cottage, then studied Interior Architecture at the Dublin Institute of Design and Technology. After graduation in 2010, she apprenticed with established Dublin renovation firms, learning the practical side of coordinating with local tradespeople, managing budgets, and solving real problems. She's since completed professional certifications in Building Energy Rating assessments and sustainable renovation practices — knowledge she uses to help homeowners improve their BER ratings without compromising on aesthetics.
14 years of practical expertise across the full spectrum of Irish home renovation
Step-by-step planning for the two rooms that matter most. She's guided homeowners through every decision — from layout and lighting to material choices that actually work in Irish kitchens and bathrooms where moisture and temperature fluctuations are real concerns.
Not all paint colours work the same in Dublin as they do in London. Irish natural light is different — softer, cooler in winter, with particular angles that change how colours actually appear on your walls. She knows which materials weather well and which need more maintenance.
Building Energy Rating improvements aren't just about hitting a number. They're about making your home warmer, cheaper to heat, and more comfortable. She understands the technical side and translates it into practical decisions that actually improve how your home feels.
She's built a network of vetted plumbers, electricians, plasterers, and carpenters across the country. Not just names in a directory — people she's actually worked with, who deliver quality work, and who understand how to work on older Irish properties.
Her signature approach blends the simplicity and natural materials of Scandinavian design with the warmth and character of traditional Irish homes. It's not about replacing your cottage's soul with minimalist coldness — it's about clarity and authenticity.
Most renovation projects don't happen all at once. She helps homeowners prioritize spending based on impact and necessity, creating realistic frameworks for phasing work across months or years without losing sight of the overall vision.
Childhood spent restoring the family's 1920s cottage in Cork sparked a passion for understanding how Irish homes age, respond to weather, and can be thoughtfully updated. This wasn't a casual hobby — it was hands-on learning about materials, moisture, and what actually works in older Irish properties.
Studied Interior Architecture at the Dublin Institute of Design and Technology. Focused on sustainable design principles and the practical realities of how buildings perform in different climates. Graduated 2010 with specialized knowledge in residential spaces.
Apprenticed with established Dublin-based renovation firms. This is where theory met reality. She learned to coordinate with local tradespeople, manage budgets across multiple trades, navigate building regulations, and solve the specific challenges that come with Irish properties — rising damp, poor insulation, heritage considerations.
Completed professional certifications in Building Energy Rating assessments and sustainable renovation practices. Worked on over 250 residential projects across Ireland — rural cottages, Victorian terraces, bungalows, period properties. Built a distinctive philosophy: renovation shouldn't erase a home's story, but enhance it through considered choices.
Leads editorial direction for home renovation content at derrymacken Limited. Member of the Irish Interior Design Association. Contributes to industry publications on sustainable renovation practices. Bridges the gap between design expertise and practical homeowner guidance — making renovation knowledge accessible, honest, and grounded in real Irish home challenges.
Síle's approach to renovation comes from understanding that homes aren't abstract design problems. They're places where people live. They have histories — sometimes decades or centuries of them. They respond to Irish weather, Irish light, and Irish building traditions in ways that generic design advice misses.
She's seen countless renovation projects where homeowners felt pressured to choose between two false options: erase the character and go ultra-modern, or preserve everything and live in the past. Her philosophy rejects that choice. Instead, she believes you can respect what a home is while making it work better for how you actually live.
This shows up in practical ways. It's choosing paint colours that work with how Irish winter light falls through your windows — not just what looked good in a magazine. It's selecting materials that won't rot or warp in Irish damp. It's understanding that a traditional cottage kitchen can be beautifully minimal without feeling cold or disconnected from the home's character. It's knowing which local tradespeople actually understand older properties and won't just rip out original features without considering whether they're worth keeping.
Most importantly, it's about honesty. She doesn't pretend renovations are simple, or that every decision has a perfect answer. She helps people think through trade-offs — cost versus quality, speed versus getting it right, modern convenience versus preserving character. Because that's what renovation actually is: a series of thoughtful choices about what matters to you.
A practical framework for thinking through kitchen costs. Covers layout decisions, material choices, appliances, and how to prioritize spending when budget is limited. Written for homeowners who want to understand where money actually goes in a kitchen renovation.
Read the guideWhy paint colours that work beautifully in Mediterranean homes can look completely different in Ireland. This guide explains how Irish natural light, humidity, and seasonal changes affect your choices — plus specific recommendations for materials and finishes that actually perform well in Irish weather.
Read the guideHow bathroom work connects to your overall home energy performance. Ventilation, moisture control, and material choices all affect your Building Energy Rating. Learn how to improve efficiency without sacrificing comfort or design — and understand what actually impacts your heating costs.
Read the guideHow to make your home feel clean, simple, and modern without erasing its character. This approach combines Scandinavian principles — natural materials, clarity, light — with the warmth and authenticity of traditional Irish homes. Includes specific examples and before/after thinking.
Read the guideHave a question about your renovation project? Want to discuss your home's specific challenges?
Síle's expertise is available through derrymacken Limited. Whether you're in the early planning stages, need advice on specific decisions, or want to discuss working together on your project, reach out.
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Home renovation planning & interior design for Irish properties
Working with homeowners across Ireland
