This note considers the Welsh land transaction tax (LTT) issues that can arise in the context of land development where a development agreement is accompanied by an associated sale or lease of land, or where the developer has the power to control sales of the developed land, or is granted an option over the land. The note also covers the circumstances in which the buyer's construction obligations are part of the chargeable consideration and where the amount paid to the seller for construction services is subject to LTT.