Tarj Construction Blog — Construction News, Guides & Insights

Most roof failures give warning long before they get expensive, but the signals are easy to dismiss. This guide covers the early signs a homeowner can spot safely from the ground and the loft, why gutters and flashings cause more damage than tiles, and the point at which a repair becomes work that needs building control approval. Written for homeowners who would rather understand a roof problem than ignore it.

Quality assurance is often confused with a final inspection, but by the time a build is finished most of the work worth checking is already concealed. This article explains what independent QA and site oversight actually cover — inspection regimes, hold points, and the records that prove work was built as designed — and why the evidence matters as much as the workmanship. Written for developers, contractors and project managers who want defects and disputes caught while they are still cheap to fix.

A two-storey extension is not simply twice the cost — or twice the hassle — of a single-storey one. This guide compares the two on cost per square metre, planning likelihood, value added and disruption, so you can match the right extension to what your home actually needs. Written for homeowners weighing up a rear or side extension.

"Damp" is one word for at least three different problems, and fixing the wrong one wastes money — sometimes making an older home wetter. This guide explains how to tell condensation from penetrating and rising damp, why solid walls need to breathe, and how to diagnose the real cause before committing to a treatment. Written for owners of Victorian, Edwardian and other period homes.

Class MA lets a shop or office become homes without a full planning application, but permitted development is one of the most misread phrases in planning. This guide explains how the route works in 2026 — what makes a building eligible, the two-year use rule, what prior approval does and does not decide, and the points where conversions come unstuck. Written for developers, landlords and owners weighing a conversion.

Most construction projects have a risk register; far fewer have risk management. This guide explains how to turn a register from a document produced for an audit into a live control on the programme — through clear ownership, honest scoring, real mitigations and regular review — and how that discipline connects to CDM 2015 and the Building Safety Act. Written for developers, principal contractors and project managers.

Most kitchen extensions are single-storey rear or side-return builds. This guide explains when they need planning permission, what the Building Regulations require, why the structural opening matters, how to keep a glazed room comfortable, and what really drives the cost. Written for homeowners planning the work.

Listing protects the whole of an older home, inside and out. What listed building consent covers, which changes need it, how it differs from planning permission, and why unauthorised work is a criminal offence with no time limit for enforcement. Written for homeowners improving a protected property.

A whole-house renovation is one connected project, not ten separate jobs. How to sequence the work from the invisible to the visible, budget for what sits behind the walls, decide whether to live in or move out, hold a real contingency, and confirm the Building Regulations approval a full refurbishment triggers. Written for homeowners planning a full refurb.

There are now two Principal Designer roles in England — one for health and safety under CDM 2015, one for Building Regulations compliance. What each duty requires, how they differ, and the documentation that proves the duties were discharged. Written for developers, contractors and design teams.

Most building projects that go wrong fail before work starts — at the quote, the deposit and the handshake. The checks that protect you: insurance verified at source, company records, a written contract with staged payments, and the questions that sort good builders from risky ones. Written for homeowners in Loughton, Chigwell, Buckhurst Hill and the surrounding area.

Most garden rooms fall within permitted development — but only within precise limits on height, siting and use. Where that line sits, when Building Regulations apply, and the local restrictions to check before you order, written for homeowners in the Epping Forest District.

Party wall obligations are separate from planning and building control, and easy to miss. When notice is required, the fixed notice periods, the surveyor and award process, and the real cost of skipping it — written for terraced and semi-detached homes.

A bathroom is the most underestimated room in the house. Honest 2026 cost ranges, the hidden items that overrun a budget, and the Building Regulations that apply — so you can plan with realistic numbers.

Period homes reward preparation and punish guesswork. Honest expectations before you start — surveys, the surprises older houses hide, breathability, and where consents and Building Regulations apply.

Gateways 1, 2 and 3 for higher-risk buildings are genuine hard stops, not formalities. Here is what the Building Safety Regulator checks at each stage, where developers get caught, and how to keep a programme moving.

Loft conversion costs depend on the type your roof can take. Here are honest 2026 ranges, the staircase and fire-safety factors that move the price, and the certificate you should not skip.

Permitted development vs planning permission for house extensions, the 2026 limits that decide it, and how conservation areas and Article 4 directions change the answer locally.

Operational carbon is regulated. Embodied carbon is coming. Here's how to make material decisions that are genuinely defensible — matched to the building, backed by evidence, read across the whole life.

Planning permission and Building Regulations are not the same thing. Understand which refurbishment decisions trigger the regulations, and why getting it right before the work starts costs far less than after.

Compliance is now about provable evidence, not good intentions. Understand gateways, duty-holder roles, the golden thread, and liability that can now reach back 30 years.

The golden thread is a legal duty for higher-risk buildings and best practice for everyone else. Understand who is responsible, where it fails, and what good practice looks like.

Two duty-holder roles, two phases, one critical handover. Learn what each role covers, where accountability gaps appear, and what good appointments look like.

Legal responsibility on construction projects cannot be delegated away. Learn who the duty holders are, what each role requires, and how the rules have changed since Grenfell.

Permitted development covers the change of use only. The real cost of a conversion sits in services, fire safety and acoustics — and is rarely visible at purchase.

From £2,000 to £60,000+, UK kitchen costs depend on decisions made before work starts. Understand the tiers, the compliance, and where budgets quietly escape.

Understand what a building safety audit covers — from fire safety and structural checks to documentation, duty holders and corrective action planning.

From low-carbon heating to building fabric, ventilation and documentation — this guide explains what the Future Homes Standard means in practice for new homes in England.

CDM 2015 is more than a legal requirement. It is a practical framework for planning safely, assigning responsibility and controlling risk from design through to handover.

Compliance protects people, budgets, and long-term property value. This guide explains how Building Regulations, the Building Safety Act 2022, and CDM 2015 apply in practice.

See how Tarj Construction aligns with UK planning and environmental legislation to build responsibly and sustainably.

See how Passive House construction surpasses the Future Homes Standard through efficiency, airtight design, and sustainable performance.